Articles | Volume 19, issue 17
https://doi.org/10.5194/bg-19-4035-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-19-4035-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
01 Sep 2022
Research article |
| 01 Sep 2022
| 01 Sep 2022
Acidification, deoxygenation, and nutrient and biomass declines in a warming Mediterranean Sea
National Institute of Oceanography and Applied Geophysics – OGS, Trieste, Italy
Gianpiero Cossarini
National Institute of Oceanography and Applied Geophysics – OGS, Trieste, Italy
Paolo Lazzari
National Institute of Oceanography and Applied Geophysics – OGS, Trieste, Italy
Tomas Lovato
Ocean Modeling and Data Assimilation Division, Fondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici, CMCC, Bologna, Italy
Giorgio Bolzon
National Institute of Oceanography and Applied Geophysics – OGS, Trieste, Italy
Simona Masina
Ocean Modeling and Data Assimilation Division, Fondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici, CMCC, Bologna, Italy
Cosimo Solidoro
National Institute of Oceanography and Applied Geophysics – OGS, Trieste, Italy
Stefano Salon
CORRESPONDING AUTHOR
National Institute of Oceanography and Applied Geophysics – OGS, Trieste, Italy
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Giulia Bonino, Doroteaciro Iovino, Laurent Brodeau, and Simona Masina
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Anna Teruzzi, Giorgio Bolzon, Laura Feudale, and Gianpiero Cossarini
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Piero Lionello, David Barriopedro, Christian Ferrarin, Robert J. Nicholls, Mirko Orlić, Fabio Raicich, Marco Reale, Georg Umgiesser, Michalis Vousdoukas, and Davide Zanchettin
Nat. Hazards Earth Syst. Sci., 21, 2705–2731, https://doi.org/10.5194/nhess-21-2705-2021, https://doi.org/10.5194/nhess-21-2705-2021, 2021
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Paolo Lazzari, Stefano Salon, Elena Terzić, Watson W. Gregg, Fabrizio D'Ortenzio, Vincenzo Vellucci, Emanuele Organelli, and David Antoine
Ocean Sci., 17, 675–697, https://doi.org/10.5194/os-17-675-2021, https://doi.org/10.5194/os-17-675-2021, 2021
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Giulia Bonino, Elisa Lovecchio, Nicolas Gruber, Matthias Münnich, Simona Masina, and Doroteaciro Iovino
Biogeosciences, 18, 2429–2448, https://doi.org/10.5194/bg-18-2429-2021, https://doi.org/10.5194/bg-18-2429-2021, 2021
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Elena Terzić, Arnau Miró, Paolo Lazzari, Emanuele Organelli, and Fabrizio D'Ortenzio
Biogeosciences Discuss., https://doi.org/10.5194/bg-2020-473, https://doi.org/10.5194/bg-2020-473, 2021
Preprint withdrawn
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Valeria Di Biagio, Gianpiero Cossarini, Stefano Salon, and Cosimo Solidoro
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We organized an exhibition on the climate crisis using high-quality images shot by scientists, who are amateur photographers, during their campaigns in glacier regions. Working-age people, attracted by the gorgeous images, received the message that such beauty is in danger of vanishing. Twice, the visitors could talk directly with the experts to discuss geoscience, photography, and aesthetic choices and, of course, climate change, a problem that each of us has to play a part in to solve.
Hiroyuki Tsujino, L. Shogo Urakawa, Stephen M. Griffies, Gokhan Danabasoglu, Alistair J. Adcroft, Arthur E. Amaral, Thomas Arsouze, Mats Bentsen, Raffaele Bernardello, Claus W. Böning, Alexandra Bozec, Eric P. Chassignet, Sergey Danilov, Raphael Dussin, Eleftheria Exarchou, Pier Giuseppe Fogli, Baylor Fox-Kemper, Chuncheng Guo, Mehmet Ilicak, Doroteaciro Iovino, Who M. Kim, Nikolay Koldunov, Vladimir Lapin, Yiwen Li, Pengfei Lin, Keith Lindsay, Hailong Liu, Matthew C. Long, Yoshiki Komuro, Simon J. Marsland, Simona Masina, Aleksi Nummelin, Jan Klaus Rieck, Yohan Ruprich-Robert, Markus Scheinert, Valentina Sicardi, Dmitry Sidorenko, Tatsuo Suzuki, Hiroaki Tatebe, Qiang Wang, Stephen G. Yeager, and Zipeng Yu
Geosci. Model Dev., 13, 3643–3708, https://doi.org/10.5194/gmd-13-3643-2020, https://doi.org/10.5194/gmd-13-3643-2020, 2020
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The OMIP-2 framework for global ocean–sea-ice model simulations is assessed by comparing multi-model means from 11 CMIP6-class global ocean–sea-ice models calculated separately for the OMIP-1 and OMIP-2 simulations. Many features are very similar between OMIP-1 and OMIP-2 simulations, and yet key improvements in transitioning from OMIP-1 to OMIP-2 are also identified. Thus, the present assessment justifies that future ocean–sea-ice model development and analysis studies use the OMIP-2 framework.
Veronika Eyring, Lisa Bock, Axel Lauer, Mattia Righi, Manuel Schlund, Bouwe Andela, Enrico Arnone, Omar Bellprat, Björn Brötz, Louis-Philippe Caron, Nuno Carvalhais, Irene Cionni, Nicola Cortesi, Bas Crezee, Edouard L. Davin, Paolo Davini, Kevin Debeire, Lee de Mora, Clara Deser, David Docquier, Paul Earnshaw, Carsten Ehbrecht, Bettina K. Gier, Nube Gonzalez-Reviriego, Paul Goodman, Stefan Hagemann, Steven Hardiman, Birgit Hassler, Alasdair Hunter, Christopher Kadow, Stephan Kindermann, Sujan Koirala, Nikolay Koldunov, Quentin Lejeune, Valerio Lembo, Tomas Lovato, Valerio Lucarini, François Massonnet, Benjamin Müller, Amarjiit Pandde, Núria Pérez-Zanón, Adam Phillips, Valeriu Predoi, Joellen Russell, Alistair Sellar, Federico Serva, Tobias Stacke, Ranjini Swaminathan, Verónica Torralba, Javier Vegas-Regidor, Jost von Hardenberg, Katja Weigel, and Klaus Zimmermann
Geosci. Model Dev., 13, 3383–3438, https://doi.org/10.5194/gmd-13-3383-2020, https://doi.org/10.5194/gmd-13-3383-2020, 2020
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The Earth System Model Evaluation Tool (ESMValTool) is a community diagnostics and performance metrics tool designed to improve comprehensive and routine evaluation of earth system models (ESMs) participating in the Coupled Model Intercomparison Project (CMIP). It has undergone rapid development since the first release in 2016 and is now a well-tested tool that provides end-to-end provenance tracking to ensure reproducibility.
Stefano Salon, Gianpiero Cossarini, Giorgio Bolzon, Laura Feudale, Paolo Lazzari, Anna Teruzzi, Cosimo Solidoro, and Alessandro Crise
Ocean Sci., 15, 997–1022, https://doi.org/10.5194/os-15-997-2019, https://doi.org/10.5194/os-15-997-2019, 2019
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After 10 years of research and development, validated analysis and forecasts of the main parameters of the Mediterranean Sea biogeochemistry (e.g. phytoplankton, nutrients, oxygen, pH, carbon fluxes) at high spatial and temporal resolution are provided in the frame of the EU Copernicus Marine Environment Monitoring Service. Along with a traditional skill performance assessment, novel metrics exploiting the Biogeochemical Argo floats data are designed to estimate the forecasts uncertainty.
Piero Lionello, Dario Conte, and Marco Reale
Nat. Hazards Earth Syst. Sci., 19, 1541–1564, https://doi.org/10.5194/nhess-19-1541-2019, https://doi.org/10.5194/nhess-19-1541-2019, 2019
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Large positive and negative sea level anomalies on the coast of the Mediterranean Sea are produced by cyclones moving along the Mediterranean storm track, which are mostly generated in the western Mediterranean. The wind around the cyclone center is the main cause of sea level anomalies when a shallow water fetch is present. The inverse barometer effect produces a positive anomaly near the cyclone pressure minimum and a negative anomaly at the opposite side of the Mediterranean Sea.
Elena Terzić, Paolo Lazzari, Emanuele Organelli, Cosimo Solidoro, Stefano Salon, Fabrizio D'Ortenzio, and Pascal Conan
Biogeosciences, 16, 2527–2542, https://doi.org/10.5194/bg-16-2527-2019, https://doi.org/10.5194/bg-16-2527-2019, 2019
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Measuring ecosystem properties in the ocean is a hard business. Recent availability of data from Biogeochemical-Argo floats can help make this task easier. Numerical models can integrate these new data in a coherent picture and can be used to investigate the functioning of ecosystem processes. Our new approach merges experimental information and model capabilities to quantitatively demonstrate the importance of light and water vertical mixing for algae dynamics in the Mediterranean Sea.
Verena Haid, Doroteaciro Iovino, and Simona Masina
The Cryosphere, 11, 1387–1402, https://doi.org/10.5194/tc-11-1387-2017, https://doi.org/10.5194/tc-11-1387-2017, 2017
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Since the Antarctic sea ice extent shows a recent increase, we investigate the sea ice response to changed amount and distribution of surface freshwater addition in the Southern Ocean with the ocean–sea ice model NEMO/LIM2. We find that freshwater addition within the range of current estimates increases the ice extent, but higher amounts could have an opposing effect. The freshwater distribution is of great influence on the ice dynamics and the ice thickness is strongly influenced by it.
Gianpiero Cossarini, Stefano Querin, Cosimo Solidoro, Gianmaria Sannino, Paolo Lazzari, Valeria Di Biagio, and Giorgio Bolzon
Geosci. Model Dev., 10, 1423–1445, https://doi.org/10.5194/gmd-10-1423-2017, https://doi.org/10.5194/gmd-10-1423-2017, 2017
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The BFMCOUPLER (v1.0) is a coupling scheme that links the MITgcm and BFM models for ocean biogeochemistry simulations. The online coupling is based on an open-source code characterizd by a modular structure. Modularity preserves the potentials of the two models, allowing for a sustainable programming effort to handle future evolutions in the two codes. The BFMCOUPLER code is released along with an idealized problem (a cyclonic gyre in a mid-latitude closed basin).
Stephen M. Griffies, Gokhan Danabasoglu, Paul J. Durack, Alistair J. Adcroft, V. Balaji, Claus W. Böning, Eric P. Chassignet, Enrique Curchitser, Julie Deshayes, Helge Drange, Baylor Fox-Kemper, Peter J. Gleckler, Jonathan M. Gregory, Helmuth Haak, Robert W. Hallberg, Patrick Heimbach, Helene T. Hewitt, David M. Holland, Tatiana Ilyina, Johann H. Jungclaus, Yoshiki Komuro, John P. Krasting, William G. Large, Simon J. Marsland, Simona Masina, Trevor J. McDougall, A. J. George Nurser, James C. Orr, Anna Pirani, Fangli Qiao, Ronald J. Stouffer, Karl E. Taylor, Anne Marie Treguier, Hiroyuki Tsujino, Petteri Uotila, Maria Valdivieso, Qiang Wang, Michael Winton, and Stephen G. Yeager
Geosci. Model Dev., 9, 3231–3296, https://doi.org/10.5194/gmd-9-3231-2016, https://doi.org/10.5194/gmd-9-3231-2016, 2016
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The Ocean Model Intercomparison Project (OMIP) aims to provide a framework for evaluating, understanding, and improving the ocean and sea-ice components of global climate and earth system models contributing to the Coupled Model Intercomparison Project Phase 6 (CMIP6). This document defines OMIP and details a protocol both for simulating global ocean/sea-ice models and for analysing their output.
Italo Epicoco, Silvia Mocavero, Francesca Macchia, Marcello Vichi, Tomas Lovato, Simona Masina, and Giovanni Aloisio
Geosci. Model Dev., 9, 2115–2128, https://doi.org/10.5194/gmd-9-2115-2016, https://doi.org/10.5194/gmd-9-2115-2016, 2016
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The present work aims at evaluating the scalability performance of a high-resolution global ocean biogeochemistry model (PELAGOS025) on massive parallel architectures and the benefits in terms of the time-to-solution reduction. The outcome of the analysis demonstrated that the lack of scalability is due to several factors such as the I/O operations, the memory contention, and the load unbalancing due to the memory structure of the biogeochemistry model component.
E. Akoglu, S. Libralato, B. Salihoglu, T. Oguz, and C. Solidoro
Geosci. Model Dev., 8, 2687–2699, https://doi.org/10.5194/gmd-8-2687-2015, https://doi.org/10.5194/gmd-8-2687-2015, 2015
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Ecosystem-based marine management requires coupling/integrating multiple models in one unified scheme. The widely adopted Ecopath with Ecosim (EwE) is potentially a crucial high trophic level component of such schemes. However, being written in Visual Basic, integration of EwE with physical and/or biogeochemical oceanographic models, which were mostly written in Fortran, is complicated. We release a re-coding of EwE in Fortran (EwE-F) so as to facilitate its coupling/integration in such schemes.
G. Cossarini, P. Lazzari, and C. Solidoro
Biogeosciences, 12, 1647–1658, https://doi.org/10.5194/bg-12-1647-2015, https://doi.org/10.5194/bg-12-1647-2015, 2015
Related subject area
Earth System Science/Response to Global Change: Climate Change
The effect of forest cover changes on the regional climate conditions in Europe during the period 1986–2015
Carbon cycle feedbacks in an idealized simulation and a scenario simulation of negative emissions in CMIP6 Earth system models
Coherency and time lag analyses between MODIS vegetation indices and climate across forest and grasslands in European temperate zone
Spatiotemporal heterogeneity in the increase in ocean acidity extremes in the northeastern Pacific
Direct foliar phosphorus uptake from wildfire ash
Anthropogenic climate change drives non-stationary phytoplankton internal variability
Mapping the Future Afforestation Distribution of China Constrained by National Afforestation Plan and Climate Change
The response of wildfire regimes to Last Glacial Maximum carbon dioxide and climate
Southern Ocean phytoplankton under climate change: shifting balance of bottom-up and top-down control
Simulated responses of soil carbon to climate change in CMIP6 Earth system models: the role of false priming
Alkalinity biases in CMIP6 Earth system models and implications for simulated CO2 drawdown via artificial alkalinity enhancement
Experiments of the efficacy of tree ring blue intensity as a climate proxy in central and western China
Burned area and carbon emissions across northwestern boreal North America from 2001–2019
Quantifying land carbon cycle feedbacks under negative CO2 emissions
The potential of an increased deciduous forest fraction to mitigate the effects of heat extremes in Europe
Ideas and perspectives: Alleviation of functional limitations by soil organisms is key to climate feedbacks from arctic soils
A comparison of the climate and carbon cycle effects of carbon removal by afforestation and an equivalent reduction in fossil fuel emissions
Stability of alkalinity in ocean alkalinity enhancement (OAE) approaches – consequences for durability of CO2 storage
Ideas and perspectives: Land–ocean connectivity through groundwater
Bioclimatic change as a function of global warming from CMIP6 climate projections
Reconciling different approaches to quantifying land surface temperature impacts of afforestation using satellite observations
Drivers of intermodel uncertainty in land carbon sink projections
Reviews and syntheses: A framework to observe, understand and project ecosystem response to environmental change in the East Antarctic Southern Ocean
Acidification impacts and acclimation potential of Caribbean benthic foraminifera assemblages in naturally discharging low-pH water
Monitoring vegetation condition using microwave remote sensing: the standardized vegetation optical depth index (SVODI)
Evaluation of soil carbon simulation in CMIP6 Earth system models
Diazotrophy as a key driver of the response of marine net primary productivity to climate change
Impact of negative and positive CO2 emissions on global warming metrics using an ensemble of Earth system model simulations
Ocean alkalinity enhancement – avoiding runaway CaCO3 precipitation during quick and hydrated lime dissolution
Assessment of the impacts of biological nitrogen fixation structural uncertainty in CMIP6 earth system models
Soil carbon loss in warmed subarctic grasslands is rapid and restricted to topsoil
The European forest carbon budget under future climate conditions and current management practices
The influence of mesoscale climate drivers on hypoxia in a fjord-like deep coastal inlet and its potential implications regarding climate change: examining a decade of water quality data
Contrasting responses of phytoplankton productivity between coastal and offshore surface waters in the Taiwan Strait and the South China Sea to short-term seawater acidification
Modeling interactions between tides, storm surges, and river discharges in the Kapuas River delta
The application of dendrometers to alpine dwarf shrubs – a case study to investigate stem growth responses to environmental conditions
Climate, land cover and topography: essential ingredients in predicting wetland permanence
Not all biodiversity rich spots are climate refugia
Evaluating the dendroclimatological potential of blue intensity on multiple conifer species from Tasmania and New Zealand
Anthropogenic CO2-mediated freshwater acidification limits survival, calcification, metabolism, and behaviour in stress-tolerant freshwater crustaceans
Quantifying the role of moss in terrestrial ecosystem carbon dynamics in northern high latitudes
On the influence of erect shrubs on the irradiance profile in snow
Tolerance of tropical marine microphytobenthos exposed to elevated irradiance and temperature
Persistent impacts of the 2018 drought on forest disturbance regimes in Europe
Reviews and syntheses: Arctic fire regimes and emissions in the 21st century
Slowdown of the greening trend in natural vegetation with further rise in atmospheric CO2
Effects of elevated CO2 and extreme climatic events on forage quality and in vitro rumen fermentation in permanent grassland
Cushion bog plant community responses to passive warming in southern Patagonia
Blue carbon stocks and exchanges along the California coast
Oceanic primary production decline halved in eddy-resolving simulations of global warming
Marcus Breil, Vanessa K. M. Schneider, and Joaquim G. Pinto
Biogeosciences, 21, 811–824, https://doi.org/10.5194/bg-21-811-2024, https://doi.org/10.5194/bg-21-811-2024, 2024
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The general impact of afforestation on the regional climate conditions in Europe during the period 1986–2015 is investigated. For this purpose, a regional climate model simulation is performed, in which afforestation during this period is considered, and results are compared to a simulation in which this is not the case. Results show that afforestation had discernible impacts on the climate change signal in Europe, which may have mitigated the local warming trend, especially in summer in Europe.
Ali Asaadi, Jörg Schwinger, Hanna Lee, Jerry Tjiputra, Vivek Arora, Roland Séférian, Spencer Liddicoat, Tomohiro Hajima, Yeray Santana-Falcón, and Chris D. Jones
Biogeosciences, 21, 411–435, https://doi.org/10.5194/bg-21-411-2024, https://doi.org/10.5194/bg-21-411-2024, 2024
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Carbon cycle feedback metrics are employed to assess phases of positive and negative CO2 emissions. When emissions become negative, we find that the model disagreement in feedback metrics increases more strongly than expected from the assumption that the uncertainties accumulate linearly with time. The geographical patterns of such metrics over land highlight that differences in response between tropical/subtropical and temperate/boreal ecosystems are a major source of model disagreement.
Kinga Kulesza and Agata Hościło
EGUsphere, https://doi.org/10.5194/egusphere-2023-3017, https://doi.org/10.5194/egusphere-2023-3017, 2023
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We present coherence and time lags in spectral response of three individual vegetation types in European temperate zone to the influencing meteorological factors and teleconnection indices, in the period 2002–2022. Vegetation condition in broadleaved forest, coniferous forest and pastures was measured with MODIS NDVI and EVI, and the coherence between NDVI/EVI and meteorological elements was described using the methods of Wavelet Coherence and Pearson’s linear correlation with time lag.
Flora Desmet, Matthias Münnich, and Nicolas Gruber
Biogeosciences, 20, 5151–5175, https://doi.org/10.5194/bg-20-5151-2023, https://doi.org/10.5194/bg-20-5151-2023, 2023
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Ocean acidity extremes in the upper 250 m depth of the northeastern Pacific rapidly increase with atmospheric CO2 rise, which is worrisome for marine organisms that rapidly experience pH levels outside their local environmental conditions. Presented research shows the spatiotemporal heterogeneity in this increase between regions and depths. In particular, the subsurface increase is substantially slowed down by the presence of mesoscale eddies, often not resolved in Earth system models.
Anton Lokshin, Daniel Palchan, and Avner Gross
EGUsphere, https://doi.org/10.5194/egusphere-2023-2617, https://doi.org/10.5194/egusphere-2023-2617, 2023
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Ash particles from wildfires are rich in phosphorus (P), a crucial nutrient that constitutes a limiting factor in 43 % of the world's land ecosystems. We hypothesized that wildfire ash could directly contribute to plant nutrition. We found that fire ash application boosts the growth of plants, but the only way plants can uptake P from fire ash is through the foliar uptake pathway, and not through the roots. The fertilization impact of fire ash was maintained also under elevated levels of CO2.
Geneviève W. Elsworth, Nicole S. Lovenduski, Kristen M. Krumhardt, Thomas M. Marchitto, and Sarah Schlunegger
Biogeosciences, 20, 4477–4490, https://doi.org/10.5194/bg-20-4477-2023, https://doi.org/10.5194/bg-20-4477-2023, 2023
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Anthropogenic climate change will influence marine phytoplankton over the coming century. Here, we quantify the influence of anthropogenic climate change on marine phytoplankton internal variability using an Earth system model ensemble and identify a decline in global phytoplankton biomass variance with warming. Our results suggest that climate mitigation efforts that account for marine phytoplankton changes should also consider changes in phytoplankton variance driven by anthropogenic warming.
Shuaifeng Song, Xuezhen Zhang, and Xiaodong Yan
Biogeosciences Discuss., https://doi.org/10.5194/bg-2023-177, https://doi.org/10.5194/bg-2023-177, 2023
Revised manuscript accepted for BG
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We mapped the distribution of future potential afforestation area based on future high-resolution climate data and climate-vegetation model. After considering national afforestation policy and climate change, we found that the future potential afforestation area is mainly located around and to the east of the Hu Line. This study can provide a dataset for exploring the effects of future afforestation, and this method can guide designing future gridded afforestation regions for other countries.
Olivia Haas, Iain Colin Prentice, and Sandy P. Harrison
Biogeosciences, 20, 3981–3995, https://doi.org/10.5194/bg-20-3981-2023, https://doi.org/10.5194/bg-20-3981-2023, 2023
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We quantify the impact of CO2 and climate on global patterns of burnt area, fire size, and intensity under Last Glacial Maximum (LGM) conditions using three climate scenarios. Climate change alone did not produce the observed LGM reduction in burnt area, but low CO2 did through reducing vegetation productivity. Fire intensity was sensitive to CO2 but strongly affected by changes in atmospheric dryness. Low CO2 caused smaller fires; climate had the opposite effect except in the driest scenario.
Tianfei Xue, Ivy Frenger, Jens Terhaar, A. E. Friederike Prowe, Thomas L. Frölicher, and Andreas Oschlies
Biogeosciences Discuss., https://doi.org/10.5194/bg-2023-171, https://doi.org/10.5194/bg-2023-171, 2023
Revised manuscript accepted for BG
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Phytoplankton plays a crucial role in marine ecosystems. However, climate change's impact on phytoplankton biomass remains uncertain, particularly in the Southern Ocean. In this region, phytoplankton biomass within the water column is likely to remain stable in response to climate change, as supported by models. This stability arises from a shallower mixed layer, favoring phytoplankton growth but also increasing zooplankton grazing due to phytoplankton concentration near the surface.
Rebecca M. Varney, Sarah E. Chadburn, Eleanor J. Burke, Simon Jones, Andy J. Wiltshire, and Peter M. Cox
Biogeosciences, 20, 3767–3790, https://doi.org/10.5194/bg-20-3767-2023, https://doi.org/10.5194/bg-20-3767-2023, 2023
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This study evaluates soil carbon projections during the 21st century in CMIP6 Earth system models. In general, we find a reduced spread of changes in global soil carbon in CMIP6 compared to the previous CMIP5 generation. The reduced CMIP6 spread arises from an emergent relationship between soil carbon changes due to change in plant productivity and soil carbon changes due to changes in turnover time. We show that this relationship is consistent with false priming under transient climate change.
Claudia Hinrichs, Peter Köhler, Christoph Völker, and Judith Hauck
Biogeosciences, 20, 3717–3735, https://doi.org/10.5194/bg-20-3717-2023, https://doi.org/10.5194/bg-20-3717-2023, 2023
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This study evaluated the alkalinity distribution in 14 climate models and found that most models underestimate alkalinity at the surface and overestimate it in the deeper ocean. It highlights the need for better understanding and quantification of processes driving alkalinity distribution and calcium carbonate dissolution and the importance of accounting for biases in model results when evaluating potential ocean alkalinity enhancement experiments.
Yonghong Zheng, Huanfeng Shen, Rory Abernethy, and Rob Wilson
Biogeosciences, 20, 3481–3490, https://doi.org/10.5194/bg-20-3481-2023, https://doi.org/10.5194/bg-20-3481-2023, 2023
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Investigations in central and western China show that tree ring inverted latewood intensity expresses a strong positive relationship with growing-season temperatures, indicating exciting potential for regions south of 30° N that are traditionally not targeted for temperature reconstructions. Earlywood BI also shows good potential to reconstruct hydroclimate parameters in some humid areas and will enhance ring-width-based hydroclimate reconstructions in the future.
Stefano Potter, Sol Cooperdock, Sander Veraverbeke, Xanthe Walker, Michelle C. Mack, Scott J. Goetz, Jennifer Baltzer, Laura Bourgeau-Chavez, Arden Burrell, Catherine Dieleman, Nancy French, Stijn Hantson, Elizabeth E. Hoy, Liza Jenkins, Jill F. Johnstone, Evan S. Kane, Susan M. Natali, James T. Randerson, Merritt R. Turetsky, Ellen Whitman, Elizabeth Wiggins, and Brendan M. Rogers
Biogeosciences, 20, 2785–2804, https://doi.org/10.5194/bg-20-2785-2023, https://doi.org/10.5194/bg-20-2785-2023, 2023
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Here we developed a new burned-area detection algorithm between 2001–2019 across Alaska and Canada at 500 m resolution. We estimate 2.37 Mha burned annually between 2001–2019 over the domain, emitting 79.3 Tg C per year, with a mean combustion rate of 3.13 kg C m−2. We found larger-fire years were generally associated with greater mean combustion. The burned-area and combustion datasets described here can be used for local- to continental-scale applications of boreal fire science.
V. Rachel Chimuka, Claude-Michel Nzotungicimpaye, and Kirsten Zickfeld
Biogeosciences, 20, 2283–2299, https://doi.org/10.5194/bg-20-2283-2023, https://doi.org/10.5194/bg-20-2283-2023, 2023
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We propose a new method to quantify carbon cycle feedbacks under negative CO2 emissions. Our method isolates the lagged carbon cycle response to preceding positive emissions from the response to negative emissions. Our findings suggest that feedback parameters calculated with the novel approach are larger than those calculated with the conventional approach whereby carbon cycle inertia is not corrected for, with implications for the effectiveness of carbon dioxide removal in reducing CO2 levels.
Marcus Breil, Annabell Weber, and Joaquim G. Pinto
Biogeosciences, 20, 2237–2250, https://doi.org/10.5194/bg-20-2237-2023, https://doi.org/10.5194/bg-20-2237-2023, 2023
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A promising strategy for mitigating burdens of heat extremes in Europe is to replace dark coniferous forests with brighter deciduous forests. The consequence of this would be reduced absorption of solar radiation, which should reduce the intensities of heat periods. In this study, we show that deciduous forests have a certain cooling effect on heat period intensities in Europe. However, the magnitude of the temperature reduction is quite small.
Gesche Blume-Werry, Jonatan Klaminder, Eveline J. Krab, and Sylvain Monteux
Biogeosciences, 20, 1979–1990, https://doi.org/10.5194/bg-20-1979-2023, https://doi.org/10.5194/bg-20-1979-2023, 2023
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Northern soils store a lot of carbon. Most research has focused on how this carbon storage is regulated by cold temperatures. However, it is soil organisms, from minute bacteria to large earthworms, that decompose the organic material. Novel soil organisms from further south could increase decomposition rates more than climate change does and lead to carbon losses. We therefore advocate for including soil organisms when predicting the fate of soil functions in warming northern ecosystems.
Koramanghat Unnikrishnan Jayakrishnan and Govindasamy Bala
Biogeosciences, 20, 1863–1877, https://doi.org/10.5194/bg-20-1863-2023, https://doi.org/10.5194/bg-20-1863-2023, 2023
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Afforestation and reducing fossil fuel emissions are two important mitigation strategies to reduce the amount of global warming. Our work shows that reducing fossil fuel emissions is relatively more effective than afforestation for the same amount of carbon removed from the atmosphere. However, understanding of the processes that govern the biophysical effects of afforestation should be improved before considering our results for climate policy.
Jens Hartmann, Niels Suitner, Carl Lim, Julieta Schneider, Laura Marín-Samper, Javier Arístegui, Phil Renforth, Jan Taucher, and Ulf Riebesell
Biogeosciences, 20, 781–802, https://doi.org/10.5194/bg-20-781-2023, https://doi.org/10.5194/bg-20-781-2023, 2023
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CO2 can be stored in the ocean via increasing alkalinity of ocean water. Alkalinity can be created via dissolution of alkaline materials, like limestone or soda. Presented research studies boundaries for increasing alkalinity in seawater. The best way to increase alkalinity was found using an equilibrated solution, for example as produced from reactors. Adding particles for dissolution into seawater on the other hand produces the risk of losing alkalinity and degassing of CO2 to the atmosphere.
Damian L. Arévalo-Martínez, Amir Haroon, Hermann W. Bange, Ercan Erkul, Marion Jegen, Nils Moosdorf, Jens Schneider von Deimling, Christian Berndt, Michael Ernst Böttcher, Jasper Hoffmann, Volker Liebetrau, Ulf Mallast, Gudrun Massmann, Aaron Micallef, Holly A. Michael, Hendrik Paasche, Wolfgang Rabbel, Isaac Santos, Jan Scholten, Katrin Schwalenberg, Beata Szymczycha, Ariel T. Thomas, Joonas J. Virtasalo, Hannelore Waska, and Bradley A. Weymer
Biogeosciences, 20, 647–662, https://doi.org/10.5194/bg-20-647-2023, https://doi.org/10.5194/bg-20-647-2023, 2023
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Groundwater flows at the land–ocean transition and the extent of freshened groundwater below the seafloor are increasingly relevant in marine sciences, both because they are a highly uncertain term of biogeochemical budgets and due to the emerging interest in the latter as a resource. Here, we discuss our perspectives on future research directions to better understand land–ocean connectivity through groundwater and its potential responses to natural and human-induced environmental changes.
Morgan Sparey, Peter Cox, and Mark S. Williamson
Biogeosciences, 20, 451–488, https://doi.org/10.5194/bg-20-451-2023, https://doi.org/10.5194/bg-20-451-2023, 2023
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Accurate climate models are vital for mitigating climate change; however, projections often disagree. Using Köppen–Geiger bioclimate classifications we show that CMIP6 climate models agree well on the fraction of global land surface that will change classification per degree of global warming. We find that 13 % of land will change climate per degree of warming from 1 to 3 K; thus, stabilising warming at 1.5 rather than 2 K would save over 7.5 million square kilometres from bioclimatic change.
Huanhuan Wang, Chao Yue, and Sebastiaan Luyssaert
Biogeosciences, 20, 75–92, https://doi.org/10.5194/bg-20-75-2023, https://doi.org/10.5194/bg-20-75-2023, 2023
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This study provided a synthesis of three influential methods to quantify afforestation impact on surface temperature. Results showed that actual effect following afforestation was highly dependent on afforestation fraction. When full afforestation is assumed, the actual effect approaches the potential effect. We provided evidence the afforestation faction is a key factor in reconciling different methods and emphasized that it should be considered for surface cooling impacts in policy evaluation.
Ryan S. Padrón, Lukas Gudmundsson, Laibao Liu, Vincent Humphrey, and Sonia I. Seneviratne
Biogeosciences, 19, 5435–5448, https://doi.org/10.5194/bg-19-5435-2022, https://doi.org/10.5194/bg-19-5435-2022, 2022
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The answer to how much carbon land ecosystems are projected to remove from the atmosphere until 2100 is different for each Earth system model. We find that differences across models are primarily explained by the annual land carbon sink dependence on temperature and soil moisture, followed by the dependence on CO2 air concentration, and by average climate conditions. Our insights on why each model projects a relatively high or low land carbon sink can help to reduce the underlying uncertainty.
Julian Gutt, Stefanie Arndt, David Keith Alan Barnes, Horst Bornemann, Thomas Brey, Olaf Eisen, Hauke Flores, Huw Griffiths, Christian Haas, Stefan Hain, Tore Hattermann, Christoph Held, Mario Hoppema, Enrique Isla, Markus Janout, Céline Le Bohec, Heike Link, Felix Christopher Mark, Sebastien Moreau, Scarlett Trimborn, Ilse van Opzeeland, Hans-Otto Pörtner, Fokje Schaafsma, Katharina Teschke, Sandra Tippenhauer, Anton Van de Putte, Mia Wege, Daniel Zitterbart, and Dieter Piepenburg
Biogeosciences, 19, 5313–5342, https://doi.org/10.5194/bg-19-5313-2022, https://doi.org/10.5194/bg-19-5313-2022, 2022
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Long-term ecological observations are key to assess, understand and predict impacts of environmental change on biotas. We present a multidisciplinary framework for such largely lacking investigations in the East Antarctic Southern Ocean, combined with case studies, experimental and modelling work. As climate change is still minor here but is projected to start soon, the timely implementation of this framework provides the unique opportunity to document its ecological impacts from the very onset.
Daniel François, Adina Paytan, Olga Maria Oliveira de Araújo, Ricardo Tadeu Lopes, and Cátia Fernandes Barbosa
Biogeosciences, 19, 5269–5285, https://doi.org/10.5194/bg-19-5269-2022, https://doi.org/10.5194/bg-19-5269-2022, 2022
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Our analysis revealed that under the two most conservative acidification projections foraminifera assemblages did not display considerable changes. However, a significant decrease in species richness was observed when pH decreases to 7.7 pH units, indicating adverse effects under high-acidification scenarios. A micro-CT analysis revealed that calcified tests of Archaias angulatus were of lower density in low pH, suggesting no acclimation capacity for this species.
Leander Moesinger, Ruxandra-Maria Zotta, Robin van der Schalie, Tracy Scanlon, Richard de Jeu, and Wouter Dorigo
Biogeosciences, 19, 5107–5123, https://doi.org/10.5194/bg-19-5107-2022, https://doi.org/10.5194/bg-19-5107-2022, 2022
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The standardized vegetation optical depth index (SVODI) can be used to monitor the vegetation condition, such as whether the vegetation is unusually dry or wet. SVODI has global coverage, spans the past 3 decades and is derived from multiple spaceborne passive microwave sensors of that period. SVODI is based on a new probabilistic merging method that allows the merging of normally distributed data even if the data are not gap-free.
Rebecca M. Varney, Sarah E. Chadburn, Eleanor J. Burke, and Peter M. Cox
Biogeosciences, 19, 4671–4704, https://doi.org/10.5194/bg-19-4671-2022, https://doi.org/10.5194/bg-19-4671-2022, 2022
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Soil carbon is the Earth’s largest terrestrial carbon store, and the response to climate change represents one of the key uncertainties in obtaining accurate global carbon budgets required to successfully militate against climate change. The ability of climate models to simulate present-day soil carbon is therefore vital. This study assesses soil carbon simulation in the latest ensemble of models which allows key areas for future model development to be identified.
Laurent Bopp, Olivier Aumont, Lester Kwiatkowski, Corentin Clerc, Léonard Dupont, Christian Ethé, Thomas Gorgues, Roland Séférian, and Alessandro Tagliabue
Biogeosciences, 19, 4267–4285, https://doi.org/10.5194/bg-19-4267-2022, https://doi.org/10.5194/bg-19-4267-2022, 2022
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The impact of anthropogenic climate change on the biological production of phytoplankton in the ocean is a cause for concern because its evolution could affect the response of marine ecosystems to climate change. Here, we identify biological N fixation and its response to future climate change as a key process in shaping the future evolution of marine phytoplankton production. Our results show that further study of how this nitrogen fixation responds to environmental change is essential.
Negar Vakilifard, Richard G. Williams, Philip B. Holden, Katherine Turner, Neil R. Edwards, and David J. Beerling
Biogeosciences, 19, 4249–4265, https://doi.org/10.5194/bg-19-4249-2022, https://doi.org/10.5194/bg-19-4249-2022, 2022
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To remain within the Paris climate agreement, there is an increasing need to develop and implement carbon capture and sequestration techniques. The global climate benefits of implementing negative emission technologies over the next century are assessed using an Earth system model covering a wide range of plausible climate states. In some model realisations, there is continued warming after emissions cease. This continued warming is avoided if negative emissions are incorporated.
Charly A. Moras, Lennart T. Bach, Tyler Cyronak, Renaud Joannes-Boyau, and Kai G. Schulz
Biogeosciences, 19, 3537–3557, https://doi.org/10.5194/bg-19-3537-2022, https://doi.org/10.5194/bg-19-3537-2022, 2022
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This research presents the first laboratory results of quick and hydrated lime dissolution in natural seawater. These two minerals are of great interest for ocean alkalinity enhancement, a strategy aiming to decrease atmospheric CO2 concentrations. Following the dissolution of these minerals, we identified several hurdles and presented ways to avoid them or completely negate them. Finally, we proceeded to various simulations in today’s oceans to implement the strategy at its highest potential.
Taraka Davies-Barnard, Sönke Zaehle, and Pierre Friedlingstein
Biogeosciences, 19, 3491–3503, https://doi.org/10.5194/bg-19-3491-2022, https://doi.org/10.5194/bg-19-3491-2022, 2022
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Biological nitrogen fixation is the largest natural input of new nitrogen onto land. Earth system models mainly represent global total terrestrial biological nitrogen fixation within observational uncertainties but overestimate tropical fixation. The model range of increase in biological nitrogen fixation in the SSP3-7.0 scenario is 3 % to 87 %. While biological nitrogen fixation is a key source of new nitrogen, its predictive power for net primary productivity in models is limited.
Niel Verbrigghe, Niki I. W. Leblans, Bjarni D. Sigurdsson, Sara Vicca, Chao Fang, Lucia Fuchslueger, Jennifer L. Soong, James T. Weedon, Christopher Poeplau, Cristina Ariza-Carricondo, Michael Bahn, Bertrand Guenet, Per Gundersen, Gunnhildur E. Gunnarsdóttir, Thomas Kätterer, Zhanfeng Liu, Marja Maljanen, Sara Marañón-Jiménez, Kathiravan Meeran, Edda S. Oddsdóttir, Ivika Ostonen, Josep Peñuelas, Andreas Richter, Jordi Sardans, Páll Sigurðsson, Margaret S. Torn, Peter M. Van Bodegom, Erik Verbruggen, Tom W. N. Walker, Håkan Wallander, and Ivan A. Janssens
Biogeosciences, 19, 3381–3393, https://doi.org/10.5194/bg-19-3381-2022, https://doi.org/10.5194/bg-19-3381-2022, 2022
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In subarctic grassland on a geothermal warming gradient, we found large reductions in topsoil carbon stocks, with carbon stocks linearly declining with warming intensity. Most importantly, however, we observed that soil carbon stocks stabilised within 5 years of warming and remained unaffected by warming thereafter, even after > 50 years of warming. Moreover, in contrast to the large topsoil carbon losses, subsoil carbon stocks remained unaffected after > 50 years of soil warming.
Roberto Pilli, Ramdane Alkama, Alessandro Cescatti, Werner A. Kurz, and Giacomo Grassi
Biogeosciences, 19, 3263–3284, https://doi.org/10.5194/bg-19-3263-2022, https://doi.org/10.5194/bg-19-3263-2022, 2022
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To become carbon neutral by 2050, the European Union (EU27) forest C sink should increase to −450 Mt CO2 yr-1. Our study highlights that under current management practices (i.e. excluding any policy scenario) the forest C sink of the EU27 member states and the UK may decrease to about −250 Mt CO2eq yr-1 in 2050. The expected impacts of future climate change, however, add a considerable uncertainty, potentially nearly doubling or halving the sink associated with forest management.
Johnathan Daniel Maxey, Neil David Hartstein, Aazani Mujahid, and Moritz Müller
Biogeosciences, 19, 3131–3150, https://doi.org/10.5194/bg-19-3131-2022, https://doi.org/10.5194/bg-19-3131-2022, 2022
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Deep coastal inlets are important sites for regulating land-based organic pollution before it enters coastal oceans. This study focused on how large climate forces, rainfall, and river flow impact organic loading and oxygen conditions in a coastal inlet in Tasmania. Increases in rainfall were linked to higher organic loading and lower oxygen in basin waters. Finally we observed a significant correlation between the Southern Annular Mode and oxygen concentrations in the system's basin waters.
Guang Gao, Tifeng Wang, Jiazhen Sun, Xin Zhao, Lifang Wang, Xianghui Guo, and Kunshan Gao
Biogeosciences, 19, 2795–2804, https://doi.org/10.5194/bg-19-2795-2022, https://doi.org/10.5194/bg-19-2795-2022, 2022
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After conducting large-scale deck-incubation experiments, we found that seawater acidification (SA) increased primary production (PP) in coastal waters but reduced it in pelagic zones, which is mainly regulated by local pH, light intensity, salinity, and community structure. In future oceans, SA combined with decreased upward transports of nutrients may synergistically reduce PP in pelagic zones.
Joko Sampurno, Valentin Vallaeys, Randy Ardianto, and Emmanuel Hanert
Biogeosciences, 19, 2741–2757, https://doi.org/10.5194/bg-19-2741-2022, https://doi.org/10.5194/bg-19-2741-2022, 2022
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This study is the first assessment to evaluate the interactions between river discharges, tides, and storm surges and how they can drive compound flooding in the Kapuas River delta. We successfully created a realistic hydrodynamic model whose domain covers the land–sea continuum using a wetting–drying algorithm in a data-scarce environment. We then proposed a new method to delineate compound flooding hazard zones along the river channels based on the maximum water level profiles.
Svenja Dobbert, Roland Pape, and Jörg Löffler
Biogeosciences, 19, 1933–1958, https://doi.org/10.5194/bg-19-1933-2022, https://doi.org/10.5194/bg-19-1933-2022, 2022
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Understanding how vegetation might respond to climate change is especially important in arctic–alpine ecosystems, where major shifts in shrub growth have been observed. We studied how such changes come to pass and how future changes might look by measuring hourly variations in the stem diameter of dwarf shrubs from one common species. From these data, we are able to discern information about growth mechanisms and can thus show the complexity of shrub growth and micro-environment relations.
Jody Daniel, Rebecca C. Rooney, and Derek T. Robinson
Biogeosciences, 19, 1547–1570, https://doi.org/10.5194/bg-19-1547-2022, https://doi.org/10.5194/bg-19-1547-2022, 2022
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The threat posed by climate change to prairie pothole wetlands is well documented, but gaps remain in our ability to make meaningful predictions about how prairie pothole wetlands will respond. We integrate aspects of topography, land cover/land use and climate to model the permanence class of tens of thousands of wetlands at the western edge of the Prairie Pothole Region.
Ádám T. Kocsis, Qianshuo Zhao, Mark J. Costello, and Wolfgang Kiessling
Biogeosciences, 18, 6567–6578, https://doi.org/10.5194/bg-18-6567-2021, https://doi.org/10.5194/bg-18-6567-2021, 2021
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Biodiversity is under threat from the effects of global warming, and assessing the effects of climate change on areas of high species richness is of prime importance to conservation. Terrestrial and freshwater rich spots have been and will be less affected by climate change than other areas. However, marine rich spots of biodiversity are expected to experience more pronounced warming.
Rob Wilson, Kathy Allen, Patrick Baker, Gretel Boswijk, Brendan Buckley, Edward Cook, Rosanne D'Arrigo, Dan Druckenbrod, Anthony Fowler, Margaux Grandjean, Paul Krusic, and Jonathan Palmer
Biogeosciences, 18, 6393–6421, https://doi.org/10.5194/bg-18-6393-2021, https://doi.org/10.5194/bg-18-6393-2021, 2021
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We explore blue intensity (BI) – a low-cost method for measuring ring density – to enhance palaeoclimatology in Australasia. Calibration experiments, using several conifer species from Tasmania and New Zealand, model 50–80 % of the summer temperature variance. The implications of these results have profound consequences for high-resolution paleoclimatology in Australasia, as the speed and cheapness of BI generation could lead to a step change in our understanding of past climate in the region.
Alex R. Quijada-Rodriguez, Pou-Long Kuan, Po-Hsuan Sung, Mao-Ting Hsu, Garett J. P. Allen, Pung Pung Hwang, Yung-Che Tseng, and Dirk Weihrauch
Biogeosciences, 18, 6287–6300, https://doi.org/10.5194/bg-18-6287-2021, https://doi.org/10.5194/bg-18-6287-2021, 2021
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Anthropogenic CO2 is chronically acidifying aquatic ecosystems. We aimed to determine the impact of future freshwater acidification on the physiology and behaviour of an important aquaculture crustacean, Chinese mitten crabs. We report that elevated freshwater CO2 levels lead to impairment of calcification, locomotor behaviour, and survival and reduced metabolism in this species. Results suggest that present-day calcifying invertebrates could be heavily affected by freshwater acidification.
Junrong Zha and Qianlai Zhuang
Biogeosciences, 18, 6245–6269, https://doi.org/10.5194/bg-18-6245-2021, https://doi.org/10.5194/bg-18-6245-2021, 2021
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This study incorporated moss into an extant biogeochemistry model to simulate the role of moss in carbon dynamics in the Arctic. The interactions between higher plants and mosses and their competition for energy, water, and nutrients are considered in our study. We found that, compared with the previous model without moss, the new model estimated a much higher carbon accumulation in the region during the last century and this century.
Maria Belke-Brea, Florent Domine, Ghislain Picard, Mathieu Barrere, and Laurent Arnaud
Biogeosciences, 18, 5851–5869, https://doi.org/10.5194/bg-18-5851-2021, https://doi.org/10.5194/bg-18-5851-2021, 2021
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Expanding shrubs in the Arctic change snowpacks into a mix of snow, impurities and buried branches. Snow is a translucent medium into which light penetrates and gets partly absorbed by branches or impurities. Measurements of light attenuation in snow in Northern Quebec, Canada, showed (1) black-carbon-dominated light attenuation in snowpacks without shrubs and (2) buried branches influence radiation attenuation in snow locally, leading to melting and pockets of large crystals close to branches.
Sazlina Salleh and Andrew McMinn
Biogeosciences, 18, 5313–5326, https://doi.org/10.5194/bg-18-5313-2021, https://doi.org/10.5194/bg-18-5313-2021, 2021
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The benthic diatom communities in Tanjung Rhu, Malaysia, were regularly exposed to high light and temperature variability during the tidal cycle, resulting in low photosynthetic efficiency. We examined the impact of high temperatures on diatoms' photosynthetic capacities, and temperatures beyond 50 °C caused severe photoinhibition. At the same time, those diatoms exposed to temperatures of 40 °C did not show any sign of photoinhibition.
Cornelius Senf and Rupert Seidl
Biogeosciences, 18, 5223–5230, https://doi.org/10.5194/bg-18-5223-2021, https://doi.org/10.5194/bg-18-5223-2021, 2021
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Europe was affected by an extreme drought in 2018. We show that this drought has increased forest disturbances across Europe, especially central and eastern Europe. Disturbance levels observed 2018–2020 were the highest on record for 30 years. Increased forest disturbances were correlated with low moisture and high atmospheric water demand. The unprecedented impacts of the 2018 drought on forest disturbances demonstrate an urgent need to adapt Europe’s forests to a hotter and drier future.
Jessica L. McCarty, Juha Aalto, Ville-Veikko Paunu, Steve R. Arnold, Sabine Eckhardt, Zbigniew Klimont, Justin J. Fain, Nikolaos Evangeliou, Ari Venäläinen, Nadezhda M. Tchebakova, Elena I. Parfenova, Kaarle Kupiainen, Amber J. Soja, Lin Huang, and Simon Wilson
Biogeosciences, 18, 5053–5083, https://doi.org/10.5194/bg-18-5053-2021, https://doi.org/10.5194/bg-18-5053-2021, 2021
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Fires, including extreme fire seasons, and fire emissions are more common in the Arctic. A review and synthesis of current scientific literature find climate change and human activity in the north are fuelling an emerging Arctic fire regime, causing more black carbon and methane emissions within the Arctic. Uncertainties persist in characterizing future fire landscapes, and thus emissions, as well as policy-relevant challenges in understanding, monitoring, and managing Arctic fire regimes.
Alexander J. Winkler, Ranga B. Myneni, Alexis Hannart, Stephen Sitch, Vanessa Haverd, Danica Lombardozzi, Vivek K. Arora, Julia Pongratz, Julia E. M. S. Nabel, Daniel S. Goll, Etsushi Kato, Hanqin Tian, Almut Arneth, Pierre Friedlingstein, Atul K. Jain, Sönke Zaehle, and Victor Brovkin
Biogeosciences, 18, 4985–5010, https://doi.org/10.5194/bg-18-4985-2021, https://doi.org/10.5194/bg-18-4985-2021, 2021
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Satellite observations since the early 1980s show that Earth's greening trend is slowing down and that browning clusters have been emerging, especially in the last 2 decades. A collection of model simulations in conjunction with causal theory points at climatic changes as a key driver of vegetation changes in natural ecosystems. Most models underestimate the observed vegetation browning, especially in tropical rainforests, which could be due to an excessive CO2 fertilization effect in models.
Vincent Niderkorn, Annette Morvan-Bertrand, Aline Le Morvan, Angela Augusti, Marie-Laure Decau, and Catherine Picon-Cochard
Biogeosciences, 18, 4841–4853, https://doi.org/10.5194/bg-18-4841-2021, https://doi.org/10.5194/bg-18-4841-2021, 2021
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Climate change can change vegetation characteristics in grasslands with a potential impact on forage chemical composition and quality, as well as its use by ruminants. Using controlled conditions mimicking a future climatic scenario, we show that forage quality and ruminant digestion are affected in opposite ways by elevated atmospheric CO2 and an extreme event (heat wave, severe drought), indicating that different factors of climate change have to be considered together.
Verónica Pancotto, David Holl, Julio Escobar, María Florencia Castagnani, and Lars Kutzbach
Biogeosciences, 18, 4817–4839, https://doi.org/10.5194/bg-18-4817-2021, https://doi.org/10.5194/bg-18-4817-2021, 2021
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We investigated the response of a wetland plant community to elevated temperature conditions in a cushion bog on Tierra del Fuego, Argentina. We measured carbon dioxide fluxes at experimentally warmed plots and at control plots. Warmed plant communities sequestered between 55 % and 85 % less carbon dioxide than untreated control cushions over the main growing season. Our results suggest that even moderate future warming could decrease the carbon sink function of austral cushion bogs.
Melissa A. Ward, Tessa M. Hill, Chelsey Souza, Tessa Filipczyk, Aurora M. Ricart, Sarah Merolla, Lena R. Capece, Brady C O'Donnell, Kristen Elsmore, Walter C. Oechel, and Kathryn M. Beheshti
Biogeosciences, 18, 4717–4732, https://doi.org/10.5194/bg-18-4717-2021, https://doi.org/10.5194/bg-18-4717-2021, 2021
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Salt marshes and seagrass meadows ("blue carbon" habitats) can sequester and store high levels of organic carbon (OC), helping to mitigate climate change. In California blue carbon sediments, we quantified OC storage and exchange between these habitats. We find that (1) these salt marshes store about twice as much OC as seagrass meadows do and (2), while OC from seagrass meadows is deposited into neighboring salt marshes, little of this material is sequestered as "long-term" carbon.
Damien Couespel, Marina Lévy, and Laurent Bopp
Biogeosciences, 18, 4321–4349, https://doi.org/10.5194/bg-18-4321-2021, https://doi.org/10.5194/bg-18-4321-2021, 2021
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An alarming consequence of climate change is the oceanic primary production decline projected by Earth system models. These coarse-resolution models parameterize oceanic eddies. Here, idealized simulations of global warming with increasing resolution show that the decline in primary production in the eddy-resolved simulations is half as large as in the eddy-parameterized simulations. This stems from the high sensitivity of the subsurface nutrient transport to model resolution.
Cited articles
Adloff, F., Somot, S., Sevault, F., Jordà, G., Aznar, R., Déqué,
M., Herrmann, M., Marcos, M., Dubois, C., Padorno, E., Alcarez-Fanjul, E., and
Gomis, D.: Mediterranean Sea response to climate change in an ensemble of
twenty first century scenarios, Clim. Dyn., 45, 2775–2802, https://doi.org/10.1007/s00382-015-2507-3, 2015.
Álvarez, M., Sanleón-Bartolomé, H., Tanhua, T., Mintrop, L., Luchetta, A., Cantoni, C., Schroeder, K., and Civitarese, G.: The CO2 system in the Mediterranean Sea: a basin wide perspective, Ocean Sci., 10, 69–92, https://doi.org/10.5194/os-10-69-2014, 2014.
Auger, P. A., Ulses, C., Estournel, C., Stemman, L., Somot, S., and Diaz, F.:
Interannual control of plankton ecosystem in a deep convection area as
inferred from a 30-year 3D modeling study: winter mixing and prey/predator
in the NW Mediterranean, Prog. Oceanogr., 124, 12–27, https://doi.org/10.1016/j.pocean.2014.04.004, 2014.
Benedetti, F., Guilhaumon, F., Adloff, F., and Ayata, S. D: Investigating
uncertainties in zooplankton composition shifts under climate change
scenarios in the Mediterranean Sea, Ecography, 41, 345–360, https://doi.org/10.1111/ecog.02434, 2018.
Bethoux, J. P., Morin, P., Chaumery, C., Connan, O., Gentili, B., and
Ruiz-Pino, D.: Nutrients in the Mediterranean Sea, mass balance and
statistical analysis of concentrations with respect to environmental change,
Mar. Chem., 63, 155–169, 1998.
Bindoff, N. L., Cheung, W. W. L., Kairo, J. G., Arístegui, J., Guinder,
V. A., Hallberg, R., Hilmi, N., Jiao, N., Karim, M.S ., Levin, L.,
O'Donoghue, S., Purca Cuicapusa, S. R., Rinkevich, B., Suga, T., Tagliabue, A.,
and Williamson, P.: Changing Ocean, Marine Ecosystems, and Dependent
Communities, in: IPCC Special Report on the Ocean and Cryosphere in a Changing Climate, edited by: Pörtner, H.-O., Roberts, D. C., Masson-Delmotte, V.,
Zhai, P., Tignor, M., Poloczanska, E., Mintenbeck, K., Alegriìa, A., Nicolai, M.,
Okem, A., Petzold, J., Rama, B., and Weyer, N. M., Cambridge University Press, Cambridge, UK and New York, NY, USA, 755 pp., https://doi.org/10.1017/9781009157964, 2019.
Buga, L., Sarbu, G., Fryberg, L., Magnus, W., Wesslander, K., Gatti, J.,
Leroy, D., Iona, S., Larsen, M., Koefoed Rømer, J., Østrem, A. K.,
Lipizer, M., and Giorgetti, A.: EMODnet Thematic Lot n∘ 4/SI2.749773
EMODnet Chemistry Eutrophication and Acidity aggregated datasets v2018, EMODnet [data set], https://doi.org/10.6092/EC8207EF-ED81-4EE5-BF48-E26FF16BF02E, 2018.
Butenschön, M., Lovato, T., Masina, S., Caserini, S., and Grosso, M.:
Alkalinization Scenarios in the Mediterranean Sea for Efficient Removal of
Atmospheric CO2 and the Mitigation of Ocean Acidification, Frontiers in Climate, 3, 14, https://doi.org/10.3389/fclim.2021.614537, 2021.
Canu, D. M., Ghermandi, A., Nunes, P. A., Lazzari, P., Cossarini, G., and
Solidoro, C.: Estimating the value of carbon sequestration ecosystem
services in the Mediterranean Sea: An ecological economics approach, Global Environ. Chang., 32,
87–95, 2015.
Cardin, V., Civitarese, G., Hainbucher, D., Bensi, M., and Rubino, A.: Thermohaline properties in the Eastern Mediterranean in the last three decades: is the basin returning to the pre-EMT situation?, Ocean Sci., 11, 53–66, https://doi.org/10.5194/os-11-53-2015, 2015.
Claustre, H., Morel, A., Hooker, S. B., Babin, M., Antoine, D., Oubelkheir,
K., Bricaud, A., Leblanc, K., Quéguiner, B., and Maritorena, S.: Is desert
dust making oligotrophic waters greener?, Geophys. Res. Lett., 29, 1–4,
https://doi.org/10.1029/2001GL014056, 2002.
Colella, S., Falcini, F., Rinaldi, E., Sammartino, M., and Santoleri, R.:
Mediterranean Ocean colour chlorophyll trends, PLoS ONE, 11, e0155756, https://doi.org/10.1371/journal.pone.0155756, 2016.
Cossarini, G., Lazzari, P., and Solidoro, C.: Spatiotemporal variability of alkalinity in the Mediterranean Sea, Biogeosciences, 12, 1647–1658, https://doi.org/10.5194/bg-12-1647-2015, 2015.
Cossarini, G., Feudale, L., Teruzzi, A., Bolzon, G., Coidessa, G., Solidoro, C., Di
Biagio, V., Amadio, C., Lazzari, P., Brosich, A., and Salon, S.: High-Resolution
Reanalysis of the Mediterranean Sea Biogeochemistry (1999–2019), Front.
Mar. Sci., 8, 741486, https://doi.org/10.3389/fmars.2021.741486, 2021.
Crise, A., Allen, J., Baretta, J., Crispi, G., Mosetti, R., and Solidoro, C.:
The Mediterranean pelagic ecosystem response to physical forcing, Prog.
Oceanogr., 44, 219–243, 1999.
Crispi, G., Mosetti, R., Solidoro, C., and Crise, A.: Nutrient cycling in
Mediterranean basins: the role of the biological pump in the trophic regime,
Ecol. Model., 138, 101–114, 2001.
Darmaraki, S., Somot, S., Sevault, F., Nabat, P., Cabos Narvaez, W. D.,
Cavicchia, L., Djurdjevic, V., Li, L., Sannino, G., and Sein, D. V: Future evolution of
Marine Heatwaves in the Mediterranean Sea, Clim. Dyn., 53, 1371–1392, https://doi.org/10.1007/s00382-019-04661-z, 2019.
De Carlo, E. H., Mousseau, L., Passafiume, O., Drupp, P., and Gattuso, J. P.:
Carbonate Chemistry and Air–Sea CO2 Flux in a NW Mediterranean Bay
Over a Four-Year Period: 2007–2011, Aquat. Geochem., 19, 399–442, https://doi.org/10.1007/s10498-013-9217-4, 2013.
Di Biagio, V., Cossarini, G., Salon, S., Lazzari, P., Querin, S., Sannino,
G., and Solidoro, C.: Temporal scales of variability in the Mediterranean Sea
ecosystem: Insight from a coupled model, J. Mar. Syst., 197, 103176, https://doi.org/10.1016/j.jmarsys.2019.05.002, 2019.
Diffenbaugh, N. S., Pal, J. S., Giorgi, F., and Gao, X.: Heat stress
intensification in the Mediterranean climate change hotspot, Geophys. Res.
Lett., 34, GL030000, https://doi.org/10.1029/2007GL030000, 2007.
D'Ortenzio, F. and Ribera d'Alcalà, M.: On the trophic regimes of the Mediterranean Sea: a satellite analysis, Biogeosciences, 6, 139–148, https://doi.org/10.5194/bg-6-139-2009, 2009.
D'Ortenzio, F., Antoine, D., and Marullo, S.: Satellite-driven modeling of
the upper ocean mixed layer and air–sea CO2 flux in the Mediterranean Sea,
Deep-Sea Res. Pt. I, 55, 405–434,
2008.
Dubois, C., Somot, S., Calmanti, S., Carillo, A., Déqué, M.,
Dell'Aquilla, A., Elizalde, A., Jacob, D., L'Hévéder,
B., Li, L., Oddo, P., Sannino, G., Scoccimarrio, E., and Sevault, F.: Future
projections of the surface heat and water budgets of the Mediterranean Sea
in an ensemble of coupled atmosphere–ocean regional climate models, Clim. Dynam., 39,
1859–1884, 2012.
Fach, B. A., Orek, H., Yilmaz, E., Tezcan, D., Salihoglu, I., Salihoglu, B.,
and Latif, M. A.: Water Mass Variability and Levantine Intermediate Water
Formation in the Eastern Mediterranean Between 2015 and 2017, J. Geophys. Res.-Ocean., 126,
e2020JC016472, https://doi.org/10.1029/2020JC016472, 2021.
Fedele, G., Mauri, E., Notarstefano, G., and Poulain, P. M.: Characterization of the Atlantic Water and Levantine Intermediate Water in the Mediterranean Sea using 20 years of Argo data, Ocean Sci., 18, 129–142, https://doi.org/10.5194/os-18-129-2022, 2022.
Foujols, M.-A., Lévy, M., Aumont, O., and Madec, G.: OPA 8.1 Tracer Model reference manual (Note du Pole de Modélisation) France, Institut Pierre-Simon Laplace (IPSL), 45 pp., 2000.
Gačić, M., Borzelli, G. L. E., Civitarese, G., Cardin, V., and Yari,
S.: Can internal processes sustain reversals of the ocean upper circulation?
The Ionian Sea example, Geophys. Res. Lett., 37, L09608, https://doi.org/10.1029/2010GL043216,
2010.
Galli, G., Lovato, T., and Solidoro, C.: Marine Heat Waves Hazard 3D Maps and
the Risk for Low Motility Organisms in a Warming Mediterranean Sea,
Front. Mar. Sci., 4, 136, https://doi.org/10.3389/fmars.2017.00136, 2017.
Gazeau, F., Ridame, C., Van Wambeke, F., Alliouane, S., Stolpe, C., Irisson, J.-O., Marro, S., Grisoni, J.-M., De Liège, G., Nunige, S., Djaoudi, K., Pulido-Villena, E., Dinasquet, J., Obernosterer, I., Catala, P., and Guieu, C.: Impact of dust addition on Mediterranean plankton communities under present and future conditions of pH and temperature: an experimental overview, Biogeosciences, 18, 5011–5034, https://doi.org/10.5194/bg-18-5011-2021, 2021.
Giorgi, F.: Climate change hot-spots, Geophys. Res. Lett., 33, https://doi.org/10.1029/2006GL025734, 2006.
Giorgi, F. and Lionello, P.: Climate Change Projections for the Mediterranean
Region, Glob. Planet Change, 63, 90–104, https://doi.org/10.1016/j.gloplacha.2007.09.005, 2008.
Goyet, C., Hassoun, A., Gemayel, E., Touratier, F., Abboud-Abi Saab, M., and
Guglielmi, V.: Thermodynamic forecasts of the Mediterranean Sea
acidification, Mediterr. Mar. Sci., 17, 508–518, 2016.
Gualdi, S., Somot, S., Li, L., Artale, V., Adani, M., Bellucci, A., Braun,
A., Calmanti, S., Carillo, A., Dell'Aquila, A., Déqué, M., Dubois,
C., Elizalde, A., Harzallah, A, Jacob, D., L'Hévéder, B., May, W.,
Oddo, P., Ruti, P., Sanna, A., Sannino, G., Scoccimarro, E., Sevault, F., and
Navarra, A : The CIRCE simulations: Regional climate change projections with
realistic representation of the Mediterranean sea, B. Am. Meteorol. Soc., 94, 65–81,
https://doi.org/10.1175/BAMS-D-11-00136.1, 2013.
Guyennon, A., Baklouti, M., Diaz, F., Palmieri, J., Beuvier, J., Lebaupin-Brossier, C., Arsouze, T., Béranger, K., Dutay, J.-C., and Moutin, T.: New insights into the organic carbon export in the Mediterranean Sea from 3-D modeling, Biogeosciences, 12, 7025–7046, https://doi.org/10.5194/bg-12-7025-2015, 2015.
Hassoun, A. E. R., Gemayel, E., Krasakopoulou, E., Goyet, C., Abboud-Abi Saab,
M., Guglielmi, V., Touratier, F., and Falco, C.: Acidification of the
Mediterranean Sea from anthropogenic carbon penetration, Deep-Sea Res.
Pt. I, 102, 1–15, 2015.
Hassoun, A. E. R., Fakhri, M., Abboud-Abi Saab, M., Gemayel, E., and De
Carlo, E. H: The carbonate system of the Eastern-most Mediterranean Sea,
Levantine Sub-basin: Variations and drivers, Deep-Sea Res. Pt. II, 164, 54–73, 2019.
Hausfather, Z. and Peters, G. P.: Emissions – The “business as usual” story is misleading, Nature, 577, 618–620, 2020.
Herrmann, M., Somot, S., Sevault, F., Estournel, C., and Déqué, M.:
Modeling the deep convection in the northwestern Mediterranean Sea using an
eddy-permitting and an eddy-resolving model: Case study of winter
1986–1987, J. Geophys. Res., 113, C04011, https://doi.org/10.1029/2006JC003991, 2008.
Herrmann, M., Diaz, F., Estournel, C., Marsaleix, P., and Ulses, C.: Impact of
atmospheric and oceanic interannual variability on the North Western
Mediterranean Sea pelagic planktonic ecosystem and associated carbon cycle, J. Geophys. Res. Oceans, 118, 5792–5813, https://doi.org/10.1002/jgrc.20405, 2013.
Herrmann, M., Estournel, C., Adloff, F., and Diaz, F.: Impact of climate
change on the northwestern Mediterranean Sea pelagic planktonic ecosystem
and associated carbon cycle, J. Geophys. Res.-Oceans, 119, 5815–5836,
https://doi.org/10.1002/2014JC010016, 2014.
Ibrahim, O., Mohamed, B., and Nagy, H.: Spatial Variability and Trends of Marine
Heat Waves in the Eastern Mediterranean Sea over 39 Years, J. Mar. Sci. Eng., 9, 643, https://doi.org/10.3390/jmse9060643, 2021.
IPCC AR5 Climate Change 2014: Synthesis Report. Contribution of Working
Groups I, II and III to the Fifth Assessment Report of the Intergovernmental
Panel on Climate Change, 2014.
Keeling, R. F., Kortzinger, A., and Gruber, N.: Ocean Deoxygenation in a
Warming World, Ann. Rev. Mar. Sci., 2, 199–229, 2010.
Kwiatkowski, L., Torres, O., Bopp, L., Aumont, O., Chamberlain, M., Christian, J. R., Dunne, J. P., Gehlen, M., Ilyina, T., John, J. G., Lenton, A., Li, H., Lovenduski, N. S., Orr, J. C., Palmieri, J., Santana-Falcón, Y., Schwinger, J., Séférian, R., Stock, C. A., Tagliabue, A., Takano, Y., Tjiputra, J., Toyama, K., Tsujino, H., Watanabe, M., Yamamoto, A., Yool, A., and Ziehn, T.: Twenty-first century ocean warming, acidification, deoxygenation, and upper-ocean nutrient and primary production decline from CMIP6 model projections, Biogeosciences, 17, 3439–3470, https://doi.org/10.5194/bg-17-3439-2020, 2020.
Lamon, L., Rizzi, J., Bonaduce, A., Dubois, C., Lazzari, P., Ghenim, L., Gana, S., Somot, S., Li, L., Melaku Canu, D., Solidoro, C., Pinardi, N., and Marcomini, A.: An ensemble of models for
identifying climate change scenarios in the Gulf of Gabes, Tunisia, Reg.
Environ. Change, 14, 31–40, https://doi.org/10.1007/s10113-013-0430-x, 2014.
Lavigne, H., D'Ortenzio, F., Ribera D'Alcalà, M., Claustre, H., Sauzède, R., and Gačić, M.: On the vertical distribution of the chlorophyll a concentration in the Mediterranean Sea: a basin-scale and seasonal approach, Biogeosciences, 12, 5021–5039, https://doi.org/10.5194/bg-12-5021-2015, 2015.
Lascaratos, A.: Estimation of deep and intermediate water mass formation rates in the Mediterranean Sea, Deep-Sea Res. Pt. II, 40, 1327–1332, 1993.
Lazzari, P., Solidoro, C., Ibello, V., Salon, S., Teruzzi, A., Béranger, K., Colella, S., and Crise, A.: Seasonal and inter-annual variability of plankton chlorophyll and primary production in the Mediterranean Sea: a modelling approach, Biogeosciences, 9, 217–233, https://doi.org/10.5194/bg-9-217-2012, 2012.
Lazzari, P., Mattia, G., Solidoro, C., Salon, S., Crise, A., Zavatarelli, M.,
Oddo, P., and Vichi M.: The impacts of climate change and environmental
management policies on the trophic regimes in the Mediterranean Sea:
Scenario analyses, J. Marine Syst., 135, 137–149, 2014.
Lazzari, P., Solidoro, C., Salon, S., and Bolzon, G.: Spatial variability of
phosphate and nitrate in the Mediterranean Sea: A modeling approach, Deep-Sea
Res., 108, 39–52, 2016.
Lionello, P., Abrantes, F., Congedi, L., Dulac, F., Gačić, M., Gomis, D., Goodess,
C., Hoff, H., Kutiel, H., Luterbacher, J., Planton, S., Reale, M., Schröder,
K., Struglia, M. V., Toreti, A., Tsimplis, M., Ulbrich, U., and Xoplaki, E.:
Introduction: Mediterranean Climate: Background Information, in: The Climate of the Mediterranean Region. From the Past to the Future, edited by: Lionello, P., Elsevier, Amsterdam, Netherlands, XXXV–lXXX, ISBN: 9780124160422, 2012.
Lovato, T.: Mediterranean Sea marine physical simulations under CMIP5 historical and future scenario projections for the 21st century, CMCC DDS [data set], https://dds.cmcc.it/#/dataset/medsea-cmip5-projections-physics, last access: 21 July 2022.
Lovato, T., Vichi, M., and Oddo, P.: High-resolution simulations of
Mediterranean Sea physical oceanography under current and scenario climate
conditions: model description, assessment and scenario analysis, CMCC
Research Paper, 207, RP0207.2013, 2013.
Macias, D. M., Garcia-Gorriz, E., and Stips, A.: Productivity changes in the
Mediterranean Sea for the twenty-first century in response to changes in the
regional atmospheric forcing, Front. Mar. Sci., 2, 79, https://doi.org/10.3389/fmars.2015.00079, 2015.
Macias, D., Stips, A., and Garcia-Gorriz, E.: The relevance of deep
chlorophyll maximum in the open Mediterranean Sea evaluated through 3D
hydrodynamic-biogeochemical coupled simulations, Ecol. Model., 281,
26–37, 2014.
Macias, D., Garcia-Gorriz, E., and Stips, A.: Deep winter convection and
phytoplankton dynamics in the NW Mediterranean Sea under present climate and
future (horizon 2030) scenarios, Sci. Rep., 22, 1–15, https://doi.org/10.1038/s41598-018-24965-0, 2018.
Madec, G.: NEMO Ocean Engine, Note du Pôle de modélisation, no. 27,
Institut Pierre-Simon Laplace (IPSL), France, 2008.
Mantziafou, A. and Lascaratos, A.: An eddy resolving numerical study of the
general circulation and deep-water formation in the Adriatic Sea, Deep-Sea
Res. Pt. I, 51, 251–292, 2004.
Mantziafou, A. and Lascaratos, A.: Deep-water formation in the Adriatic Sea:
Interannual simulations for the years 1979–1999, Deep Sea Res. Pt. I, 55,
1403–1427, 2008.
Mathbout, S., Lopez-Bustins, J. A., Royé, D., and Martin-Vide, J.:
Mediterranean-Scale Drought: Regional Datasets for Exceptional
Meteorological Drought Events during 1975–2019, Atmosphere, 12, 941, https://doi.org/10.3390/atmos12080941, 2021.
MedECC: Climate and Environmental Change in the Mediterranean Basin – Current Situation and Risks for the Future. First Mediterranean Assessment Report (Version 1), Zenodo, https://doi.org/10.5281/zenodo.4768833, 2020.
Morel, A. and Gentili, B.: The dissolved yellow substance and the shades of blue in the Mediterranean Sea, Biogeosciences, 6, 2625–2636, https://doi.org/10.5194/bg-6-2625-2009, 2009.
Moss, R. H., Edmonds, J. A., Hibbard, K. A., Manning, M. R., Rose, S. K.,
Van Vuuren, D. P., and Meehl, G. A.: The next generation of scenarios for
climate change research and assessment, Nature, 463, 747–756, 2010.
Moullec, F., Barrier, N., Drira, S., Guilhaumon, F., Marsaleix, P., Somot,
S., Ulses, C., Velez, L., and Shin, Y. J.: An end-to-end model reveals losers
and winners in a warming Mediterranean Sea, Front. Mar. Sci., 6, 345, https://doi.org/10.3389/fmars.2019.00345, 2019.
Moutin, T. and Raimbault, P.: Primary production, carbon export and
nutrients availability in Western and Eastern Mediterranean Sea in early
summer 1996 (MINOS cruise), J. Marine Syst., 33/34, 273–288, 2002.
Moutin, T. and Prieur, L.: Influence of anticyclonic eddies on the Biogeochemistry from the Oligotrophic to the Ultraoligotrophic Mediterranean (BOUM cruise), Biogeosciences, 9, 3827–3855, https://doi.org/10.5194/bg-9-3827-2012, 2012.
Myers, P. G. and Haines, K.: Stability of the Mediterranean's thermohaline
circulation under modified surface evaporative fluxes, J. Geophys. Res.,
107, https://doi.org/10.1029/2000JC000550, 2002.
Nittis, K. and Lascaratos, A.: Diagnostic and prognostic numerical studies of LIW formation, J. Mar. Syst., 18, 179–195, 1998.
O'Connor, M. I., Gilbert, B., and Brown, C. J.: Theoretical predictions for
how temperature affects the dynamics of interacting herbivores and plants,
The American Naturalist, 178, 626–638, 2011.
Oddo, P., Adani, M., Pinardi, N., Fratianni, C., Tonani, M., and Pettenuzzo, D.: A nested Atlantic-Mediterranean Sea general circulation model for operational forecasting, Ocean Sci., 5, 461–473, https://doi.org/10.5194/os-5-461-2009, 2009.
O'Neill, B. C., Tebaldi, C., van Vuuren, D. P., Eyring, V., Friedlingstein, P., Hurtt, G., Knutti, R., Kriegler, E., Lamarque, J.-F., Lowe, J., Meehl, G. A., Moss, R., Riahi, K., and Sanderson, B. M.: The Scenario Model Intercomparison Project (ScenarioMIP) for CMIP6, Geosci. Model Dev., 9, 3461–3482, https://doi.org/10.5194/gmd-9-3461-2016, 2016.
Pagès, R., Baklouti, M., Barrier, N., Ayache, M., Sevault, F., Somot, S.,
and Moutin, T.: Projected Effects of Climate-Induced Changes in
Hydrodynamics on the Biogeochemistry of the Mediterranean Sea Under the RCP
8.5 Regional Climate Scenario, Front. Mar. Sci., 7, 957, https://doi.org/10.3389/fmars.2020.563615, 2020.
Planton, S., Lionello, P., Artale, V., Aznar, R., Carrillo, A., Colin,J.,
Congedi, L., Dubois, C., Elizalde, A., Gualdi, S., Hertig, E., Jacobeit, J.,
Jordà, G., Li, L., Mariotti, A., Piani, C., Ruti, P., Sanchez-Gomez, E.,
Sannino, G., Sevault, F., Somot, S., and Tsimplis, M.: The Climate of the
Mediterranean Region in Future Climate, in: The Climate of
the Mediterranean Region. From the Past to the Future, edited by: Lionello, P., Elsevier, Amsterdam, Netherlands, Projections, 449–502, ISBN 978-0-12-416042-2, 2012.
Powley, H. R., Krom, M. D., and Van Cappellen, P.: Circulation and oxygen
cycling in the Mediterranean Sea: Sensitivity to future climate change, J. Geophys. Res.-Oceans,
121, 8230–8247, https://doi.org/10.1002/2016JC012224, 2016.
Ramirez-Romero, E., Jordà, G., Amores, A., Kay, S., Segura-Noguera, M.,
Macias, D. M., Maynou, F., Sabatés, A., and Catalán, I. A.: Assessment of
the Skill of Coupled Physical–Biogeochemical Models in the NW
Mediterranean, Front. Mar. Sci., 7, 497, https://doi.org/10.3389/fmars.2020.00497, 2020.
Reale, M., Giorgi, F., Solidoro, C., Di Biagio, V., Di Sante, F., Mariotti,
L., Farneti, R., and Sannino, G.: The Regional Earth System Model RegCM-ES:
Evaluation of the Mediterranean climate and marine biogeochemistry, J. Adv. Model. Earth Sy., 12,
e2019MS001812, https://doi.org/10.1029/2019MS001812, 2020a.
Reale, M., Salon, S., Somot, S., Solidoro, C., Giorgi, F., Cossarini, G.,
Lazzari, P., Crise, A., and Sevault, F.: Influence of large-scale atmospheric
circulation patterns on nutrients dynamics in the Mediterranean Sea in the
extended winter season (October–March) 1961–1999, Clim. Res., 82, 117–136, https://doi.org/10.3354/cr01620, 2020b.
Reale, M., Cossarini, G., Lazzari, P., Lovato, T., Bolzon, G., Masina, S., Solidoro, C., and Salon, S.: Mediterranean Sea marine biogeochemistry simulations under CMIP5 future scenario projections for the 21st century, CMCC DDS [data set], https://dds.cmcc.it/#/dataset/medsea-cmip5-projections-biogeochemistry, last access: 21 July 2022.
Richon, C., Dutay, J.-C., Dulac, F., Wang, R., and Balkanski, Y.: Modeling the biogeochemical impact of atmospheric phosphate deposition from desert dust and combustion sources to the Mediterranean Sea, Biogeosciences, 15, 2499–2524, https://doi.org/10.5194/bg-15-2499-2018, 2018.
Richon, C., Dutay, J.-C., Bopp, L., Le Vu, B., Orr, J. C., Somot, S., and Dulac, F.: Biogeochemical response of the Mediterranean Sea to the transient SRES-A2 climate change scenario, Biogeosciences, 16, 135–165, https://doi.org/10.5194/bg-16-135-2019, 2019.
Salon, S., Cossarini, G., Bolzon, G., Feudale, L., Lazzari, P., Teruzzi, A., Solidoro, C., and Crise, A.: Novel metrics based on Biogeochemical Argo data to improve the model uncertainty evaluation of the CMEMS Mediterranean marine ecosystem forecasts, Ocean Sci., 15, 997–1022, https://doi.org/10.5194/os-15-997-2019, 2019.
Schroeder, K., Garcìa-Lafuente, J., Josey, S. A., Artale, V., Nardelli,
B. B., Carrillo, A., Gačić, M., Gasparini, G. P., Herrmann, M.,
Lionello, P., Ludwig, W., Millot, C., Özsoy, E., Pisacane, G.,
Sánchez-Garrido, J. C., Sannino, G., Santoleri, R., Somot, S., Struglia,
M., Stanev, E., Taupier-Letage, I., Tsimplis, M. N., Vargas-Yáñez,
M., Zervakis, V., and Zodiatis, G.: Circulation of the Mediterranean Sea and its
Variability, in: The Climate of the Mediterranean Region: From the Past to the Future, edited by: Lionello, P., Elsevier Inc., 187–256, https://doi.org/10.1016/B978-0-12-416042-2.00003-3, 2012.
Scoccimarro, E., Gualdi, S., Bellucci, A., Sanna, A., Fogli, P. G., Manzini,
E., Vichi, M., Oddo, P., and Navarra, A.: Effects of Tropical Cyclones on
Ocean Heat Transport in a High Resolution Coupled General Circulation Model,
J. Climate, 24, 4368–4384, 2011.
Shepherd, J. G., Brewer, P. G., Oschlies, A., and Watson, A. J.: Ocean
ventilation and deoxygenation in a warming world: introduction and
overview, Philos. T. R. Soc. A, 375, 20170240, https://doi.org/10.1098/rsta.2017.0240, 2017.
Simoncelli, S., Fratianni, C., Pinardi, N., Grandi, A., Drudi, M., Oddo, P.,
and Dobricic, S.: Mediterranean Sea Physical Reanalysis (CMEMS MED-Physics),
Copernicus Monitoring Environment Marine Service (CMEMS), [data set],
https://www.cmcc.it/mediterranean-sea-physical-reanalysis-cmems-med-physics (last access: 31 October 2021), 2019.
Siokou-Frangou, I., Christaki, U., Mazzocchi, M. G., Montresor, M., Ribera d'Alcalá, M., Vaqué, D., and Zingone, A.: Plankton in the open Mediterranean Sea: a review, Biogeosciences, 7, 1543–1586, https://doi.org/10.5194/bg-7-1543-2010, 2010.
Sitz, L. E., Di Sante, F., Farneti, R., Fuentes-Franco, R., Coppola, E.,
Mariotti, L., Reale, M., Sannino, G., Barreiro, M., Nogherotto, R.,
Giuliani, G., Graffino, G., Solidoro, C., Cossarini, G., and Giorgi, F.:
Description and evaluation of the Earth System Regional Climate Model (Reg
CM-ES), J. Adv. Model. Earth Sy., 9, 1863–1886, https://doi.org/10.1002/2017MS000933, 2017.
Solidoro, C., Cossarini, G., Lazzari, P., Galli, G., Bolzon, G., Somot, S.,
Sevault, F., and Salon, S.: Modelling carbon budgets in the Mediterranean Sea
ecosystem under contemporary and future climate, Front. Mari. Sci., 8, https://doi.org/10.3389/fmars.2021.781522, 2022.
Somot, S., Sevault, F., and Déqué, M.: Transient climate change scenario
simulation of the Mediterranean Sea for the 21st century using a
high-resolution ocean circulation model, Clim. Dynam.,
27, 851–879, https://doi.org/10.1007/s00382-006-0167-z, 2006.
Somot, S., Houpert, L., Sevault, F., Testor, P., Bosse, A., Taupier-Letage,
I., Bouin, M., Waldman, R., Cassou, C., Sanchez-Gomez, E., Durrieu de Madron,
X., Adloff, F., Nabat, P., and Herrmann, M.: Characterizing, modelling and
understanding the climate variability of the deep water formation in the
North-Western Mediterranean Sea, Clim. Dynam., 51, 1179–1210, https://doi.org/10.1007/s00382-016-3295-0, 2018.
Soto-Navarro, J., Jordá, G., Amores, A., Cabos, W., Somot, S., Sevault,
F., Macias, D., Djurdjevic V., Sannino G., Li, L., and Sein, D.: Evolution of
Mediterranean Sea water properties under climate change scenarios in the
Med-CORDEX ensemble, Clim. Dyn., 54, 2135–2165, https://doi.org/10.1007/s00382-019-05105-4, 2020.
Stöven, T. and Tanhua, T.: Ventilation of the Mediterranean Sea constrained by multiple transient tracer measurements, Ocean Sci., 10, 439–457, https://doi.org/10.5194/os-10-439-2014, 2014.
Taylor, K. E., Stouffer, R. J., and Meehl, G. A.: An Overview of CMIP5 and
the Experiment Design, B. Am. Meteorol. Soc., 93, 485–498,
https://doi.org/10.1175/BAMS-D-11-00094.1, 2012.
Teruzzi, A., Bolzon, G., Salon, S., Lazzari, P., Solidoro, C., and Cossarini,
G.: Assimilation of coastal and open sea biogeochemical data to improve
phytoplankton simulation in the Mediterranean Sea, Ocean Model., 132, 46–60, 2018.
Teruzzi, A., Bolzon, G., Cossarini, G., Lazzari, P., Salon, S., Crise, A.,
and Solidoro, C.: Mediterranean Sea Biogeochemical Reanalysis (CMEMS
MED-Biogeochemistry), Copernicus Monitoring Environment Marine
Service (CMEMS) [data set], https://www.cmcc.it/doi/mediterranean-sea-biogeochemical-reanalysis-cmems-med-biogeochemistry (last access: 31 January 2021), 2019.
Teruzzi, A., Feudale, L., Bolzon, G., Lazzari, P., Salon, S., Di Biagio, V.,
Coidessa, G., and Cossarini, G.: Mediterranean Sea Biogeochemical Reanalysis
(CMEMS MED-Biogeochemistry, MedBFM3 system) (Version 1) Copernicus Monitoring Environment Marine Service (CMEMS) [data set], https://doi.org/10.25423/CMCC/MEDSEA_MULTIYEAR_BGC_006_008_MEDBFM3I, 2021.
Van Apeldoorn, D. and Bouwman, L.: SES land-based runoff and nutrient load
data (1980–2000), Deliverable 4.6,
http://www.perseus-net.eu/assets/media/PDF/deliverables/3321.6_Final.pdf, (last access: 5 February 2020), 2014.
Velaoras, D., Papadopoulos, V. P., Kontoyiannis, H., Cardin, V., and
Civitarese, G.: Water masses and hydrography during April and June 2016
in the cretan sea and cretan passage (Eastern Mediterranean Sea), Deep-Sea Res. Pt. II, 164, 25–40,
2019.
Vichi, M., Allen, J. I., Masina, S., and Hardman-Mountford, N. J.: The
emergence of ocean biogeochemical provinces: A quantitative assessment and a
diagnostic for model evaluation, Global Biogeochem. Cy., 25, GB2005, https://doi.org/10.1029/2010GB003867,
2011.
Vichi, M., Cossarini, G., Gutierrez Mlot, E., Lazzari, P., Lovato, T.,
Mattia, G., Masina, S., McKiver, W., Pinardi, N., Solidoro, C., and Zavatarelli,
M.: The Biogeochemical Flux Model (BFM): Equation Description and User
Manual. BFM version 5 (BFM-V5), Release 1.0, BFM Report series No. 1, March
2013, CMCC, Bologna, Italy, 87 pp., http://bfm-community.eu (last access: 30 October 2021),
2015.
Waldman, R., Brüggemann, N., Bosse, A., Spall, M., Somot, S., and
Sevault, F.: Overturning the Mediterranean thermohaline circulation, Geophys. Res. Lett., 45, 8407–8415, https://doi.org/10.1029/2018GL078502 ,2018.
Wimart-Rousseau, C., Lajaunie-Salla, K., Marrec, P., Wagener, T., Raimbault,
P., Lagadec, V., Lafont, M., Garcia, N., Diaz, F., Pinazo, C., Yohia, C.,
Garcia, F., Xueref-Remy, I., Blanc, P., Armengaud, A., and Lefèvre, D.:
Temporal variability of the carbonate system and air-sea CO2 exchanges in a
Mediterranean human-impacted coastal site, Estuar. Coast. Shelf S., 236, 106641, https://doi.org/10.1016/j.ecss.2020.106641, 2020.
Wolf-Gladrow, D. A., Zeebe, R. E., Klaas, C., Körtzinger, A., and
Dickson, A. G: Total alkalinity, the explicit conservative expression and
its application to biogeochemical processes, Mar. Chem., 106,
287–300, 2007.
Zunino, S., Canu, D. M., Bandelj, V., and Solidoro, C.: Effects of ocean
acidification on benthic organisms in the Mediterranean Sea under realistic
climatic scenarios: a meta-analysis, Regional Studies in Marine Science, 10, 86–96, 2017.
Zunino, S., Canu, D. M., Zupo, V., and Solidoro, C.: Direct and indirect
impacts of marine acidification on the ecosystem services provided by
coralligenous reefs and seagrass systems, Global Ecology and Conservation, 18, e00625, https://doi.org/10.1016/j.gecco.2019.e00625, 2019.
Zunino, S., Libralato, S., Melaku Canu, D., Prato G., and Solidoro C.: Impact
of Ocean Acidification on Ecosystem Functioning and Services in
Habitat-Forming Species and Marine Ecosystems, Ecosystems, 24, 1561–1575, https://doi.org/10.1007/s10021-021-00601-3, 2021.
Short summary
Future projections under the RCP8.5 and RCP4.5 emission scenarios of the Mediterranean Sea biogeochemistry at the end of the 21st century show different levels of decline in nutrients, oxygen and biomasses and an acidification of the water column. The signal intensity is stronger under RCP8.5 and in the eastern Mediterranean. Under RCP4.5, after the second half of the 21st century, biogeochemical variables show a recovery of the values observed at the beginning of the investigated period.
Future projections under the RCP8.5 and RCP4.5 emission scenarios of the Mediterranean Sea...
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