Articles | Volume 19, issue 3
https://doi.org/10.5194/bg-19-701-2022
© 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-19-701-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
04 Feb 2022
Research article |
| 04 Feb 2022
| 04 Feb 2022
Dimethylated sulfur compounds in the Peruvian upwelling system
Marine Biogeochemistry Research Divison, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Dennis Booge
Marine Biogeochemistry Research Divison, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Christa A. Marandino
Marine Biogeochemistry Research Divison, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Cathleen Schlundt
Marine Biogeochemistry Research Divison, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Astrid Bracher
Phytooptics Group, Physical Oceanography of Polar Seas, Climate
Sciences, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine
Research, Bremerhaven, Germany
Department of Physics and Electrical Engineering, Institute of
Environmental Physics, University of Bremen, Bremen, Germany
Elliot L. Atlas
Rosenstiel School of Marine and Atmospheric Science, University of
Miami, Miami, Florida, USA
Jonathan Williams
Atmospheric Chemistry and Multiphase Chemistry Departments, Max Planck
Institute for Chemistry, 55128 Mainz, Germany
Energy, Environment and Water Research Centre, The Cyprus Institute,
1645 Nicosia, Cyprus
Hermann W. Bange
Marine Biogeochemistry Research Divison, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
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Sebastian Zeppenfeld, Jonas Schaefer, Christian Pilz, Kerstin Ebell, Moritz Zeising, Frank Stratmann, Holger Siebert, Birgit Wehner, Matthias Wietz, Astrid Bracher, and Manuela van Pinxteren
Atmos. Chem. Phys., 26, 7235–7260, https://doi.org/10.5194/acp-26-7235-2026, https://doi.org/10.5194/acp-26-7235-2026, 2026
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Sea spray aerosol transports inorganic salts and carbohydrates from the ocean into the atmosphere. In this field study conducted in Svalbard, we found that carbohydrates reach elevated altitudes that are relevant for cloud formation and properties.
Lea Lange, Dennis Booge, Hendrik Feil, Josefine Karnatz, Ina Stoltenberg, Hermann W. Bange, and Christa A. Marandino
Biogeosciences, 23, 3517–3539, https://doi.org/10.5194/bg-23-3517-2026, https://doi.org/10.5194/bg-23-3517-2026, 2026
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Many gases formed and destroyed in the ocean influence climate and air quality, with evidence that these processes also happen in the skin of the ocean. Studies of this thin upper layer use specialized sampling equipment, which is known to cause losses of the gases. We performed lab experiments to quantify these losses for three gases and found that 13 % remain after sampling. With further tests, our results can be used to obtain reliable gas measurements in the field, which have been elusive.
Johanna Margaretha Schüttler, Giovanni Pugliese, Joseph Byron, Cléo Quaresma Dias-Júnior, Carolina de A. Monteiro, Hartwig Harder, Jos Lelieveld, and Jonathan Williams
Biogeosciences, 23, 3467–3498, https://doi.org/10.5194/bg-23-3467-2026, https://doi.org/10.5194/bg-23-3467-2026, 2026
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We measured how Amazon rainforest soils release and uptake compounds commonly produced by plants across seasons, including the severe 2023 El Niño drought. Soils took up isoprene most in the afternoon of dry seasons, while emissions of very reactive sesquiterpenes peaked during the drought. Removing the leaf litter changed which compounds transferred to and from the soil. These soil exchanges, though small compared to the canopy, can shape air chemistry near the ground and influence soil biota.
Benjamin Weyland, Simon Rosanka, Domenico Taraborrelli, Birger Bohn, Andreas Zahn, Florian Obersteiner, Eric Förster, Mariano Mertens, Patrick Jöckel, Helmut Ziereis, Katharina Kaiser, Horst Fischer, John N. Crowley, Nijing Wang, Achim Edtbauer, Jonathan Williams, Maria Dolores Andrés Hernández, John P. Burrows, Flora Kluge, Meike K. Rotermund, Andre Butz, and Klaus Pfeilsticker
Atmos. Chem. Phys., 26, 6825–6856, https://doi.org/10.5194/acp-26-6825-2026, https://doi.org/10.5194/acp-26-6825-2026, 2026
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The destruction by sunlight of nitrous acid (HONO) produces the so-called detergent of the atmosphere. HONO has been measured in concentrations which exceed predictions based on known chemistry for decades. Several reactions have been proposed which may explain this excess HONO. This study reports on airborne measurements of HONO; the observations exceed predictions and form a C-shaped profile in the troposphere. Together with a host of other measurements, various reactions are investigated.
Yuanxu Dong, Christa A. Marandino, Ryo Dobashi, David T. Ho, Gregor Rehder, Henry C. Bittig, Josefine Karnatz, Bita Sabbaghzadeh, Helen Czerski, and Anja Engel
Atmos. Chem. Phys., 26, 5567–5587, https://doi.org/10.5194/acp-26-5567-2026, https://doi.org/10.5194/acp-26-5567-2026, 2026
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Air-sea gas exchange regulates the Earth’s climate. However, the description of the kinetic exchange process only uses wind speed, neglecting other drivers. In this study, we investigate how fetch and natural surfactants modulate air-sea carbon dioxide exchange. Measurements from the central Baltic Sea show that limited fetch and elevated surfactants significantly suppress this exchange. A new parameterisation is provided, improving regional carbon budgets and evaluations of climate solutions.
Ryo Dobashi, David T. Ho, Yuanxu Dong, Christa A. Marandino, and Helen Czerski
EGUsphere, https://doi.org/10.5194/egusphere-2026-1984, https://doi.org/10.5194/egusphere-2026-1984, 2026
This preprint is open for discussion and under review for Ocean Science (OS).
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The exchange of CO2 between the atmosphere and the ocean is a critical component of the global carbon cycle, driven by the air-sea CO2 difference and the gas transfer velocity (k). This study measured k in the central Baltic Sea using the dual tracer technique, finding values comparable to offshore regions at the same wind speed. Commonly used parameterizations fitted the data well, while those derived for the Baltic Sea overestimated k, likely due to differences in measurement methods.
Débora Pinheiro-Oliveira, Hella van Asperen, Murielli Garcia Caetano, Michelle Robin, Achim Edtbauer, Nora Zannoni, Joseph Byron, Jonathan Williams, Layon Oreste Demarchi, Maria Teresa Fernandez Piedade, Jochen Schöngart, Florian Wittmann, Sergio Duvoisin-Junior, Carla Batista, Rodrigo Augusto Ferreira de Souza, and Eliane Gomes Alves
Biogeosciences, 23, 2451–2476, https://doi.org/10.5194/bg-23-2451-2026, https://doi.org/10.5194/bg-23-2451-2026, 2026
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Forests release trace gases that influence air and climate. While plants are the main source, soil and leaf litter can also release significant amounts, especially in tropical forests like the Amazon. We measured these fluxes in different forest types and found soil and litter to be active sources and sinks. This can improves climate models by including realistic forest processes, vital for understanding and protecting the Amazon.
Asta C. Heidemann, Alexander Hayward, Philip Assmy, Atreya Basu, Astrid Bracher, Giulia Castellani, Giacomo Ditullio, Katarzyna Dragańska-Deja, Amane Fujiwara, Glaucia Moreira Fragoso, Jacob Høyer, Jiwoon Hwang, Morten Iversen, Anabel von Jackowski, Thomas Juul-Pedersen, Piotr Kowalczuk, Youngju Lee, Atsushi Matsuoka, Alenya Merz, C. J. Mundy, Else Ostermann, Ilka Peeken, Matt Pinkerton, Joanna Stoń-Egiert, Antonia U. Thielecke, Gaëlle Veyssiere, Hongyan Xi, Eun Jin Yang, and Rafael Gonçalves-Araujo
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2026-144, https://doi.org/10.5194/essd-2026-144, 2026
Preprint under review for ESSD
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Algal pigments are widely used to describe and quantify algal biomass and composition. These organisms represent the basis of the marine food web and are vital components for the wider ecosystem. Here, we present a pan-Arctic dataset on algal pigments that has been compiled through an international collaboration between 19 institutions.
Pratirupa Bardhan, Claudia Frey, Gregor Rehder, and Hermann W. Bange
Biogeosciences, 23, 1987–2002, https://doi.org/10.5194/bg-23-1987-2026, https://doi.org/10.5194/bg-23-1987-2026, 2026
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Nitrous oxide (N2O), a potent greenhouse gas, is released from coastal seas & estuaries, yet we don't fully understand how it is formed and consumed. In this study we collected water from several sites in the central Baltic Sea. N2O came from ammonia in oxic waters. Deep waters with low to no oxygen noted more active N2O cycling. The seafloor was a source in some areas. Typically N2O is produced by bacteria, but our results indicate possibility of other players like fungi or chemical reactions.
Moritz Zeising, Laurent Oziel, Silke Thoms, Özgür Gürses, Judith Hauck, Bernd Heinold, Svetlana N. Losa, Manuela van Pinxteren, Christoph Völker, Sebastian Zeppenfeld, and Astrid Bracher
Geosci. Model Dev., 19, 2077–2109, https://doi.org/10.5194/gmd-19-2077-2026, https://doi.org/10.5194/gmd-19-2077-2026, 2026
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We assess the implementation of additional organic carbon pathways into a global setup of a numerical model, which simulates the ocean circulation, sea ice, and biogeochemical processes. With a focus on the Arctic Ocean, this model tracks the temporal and spatial dynamics of phytoplankton, exudation of organic carbon, and its aggregation to so-called transparent exopolymer particles. We evaluate the simulation using measurements from ship-based and remote-sensing campaigns in the Arctic Ocean.
Ehsan Mehdipour, Hongyan Xi, Alexander Barth, Aida Alvera-Azcárate, Adalbert Wilhelm, and Astrid Bracher
Geosci. Model Dev., 19, 1619–1643, https://doi.org/10.5194/gmd-19-1619-2026, https://doi.org/10.5194/gmd-19-1619-2026, 2026
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Phytoplankton are vital for marine ecosystems and nutrient cycling, detectable by optical satellites. Data gaps caused by clouds and other non-optimal conditions limit comprehensive analyses like trend monitoring. This study evaluated DINCAE and DINEOF gap-filling methods for reconstructing chlorophyll a datasets, including total chlorophyll a and five major phytoplankton groups. Both methods showed robust reconstruction capabilities, aiding pattern detection and long-term ocean colour analysis.
Ina Stoltenberg, Lea Lange, and Hermann W. Bange
Biogeosciences, 23, 1515–1525, https://doi.org/10.5194/bg-23-1515-2026, https://doi.org/10.5194/bg-23-1515-2026, 2026
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In order to decipher the effect of a phytoplankton bloom on N2O, dissolved N2O was measured in the upper 1 mm of the water column (seasurface microlayer) and in the underlying water during a mesocosm study. N2O concentrations were slightly enriched in the microlayer compared to the underlying water and were apparently not affected by irradiation and a phytoplankton bloom. Our results indicate that the role of the surface microlayer for N2O cycling has been overlooked so far.
Anchal Garg, Maximilien Desservettaz, Aliki Christodoulou, Theodoros Christoudias, Vijay Punjaji Kanawade, Chrysanthos Savvides, Mihalis Vrekoussis, Shahid Naqui, Tuija Jokinen, Joseph Byron, Jonathan Williams, Nikos Mihalopoulos, Eleni Liakakou, Jean Sciare, and Efstratios Bourtsoukidis
Atmos. Chem. Phys., 26, 2597–2622, https://doi.org/10.5194/acp-26-2597-2026, https://doi.org/10.5194/acp-26-2597-2026, 2026
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This study reports multi-year (2022–2024) measurements of 76 volatile organic compounds (VOCs) at a rural site in Cyprus. Oxygenated VOCs were the most abundant and showed strong daytime increases due to sunlight-driven chemistry. Air-mass analysis showed that transport from Middle East strongly influenced aromatic VOC levels. Climate–chemistry modeling underestimated most VOCs, highlighting gaps in current emission and chemical processes.
Anisbel Leon-Marcos, Manuela van Pinxteren, Sebastian Zeppenfeld, Moritz Zeising, Astrid Bracher, Laurent Oziel, Ina Tegen, and Bernd Heinold
Atmos. Chem. Phys., 26, 1109–1144, https://doi.org/10.5194/acp-26-1109-2026, https://doi.org/10.5194/acp-26-1109-2026, 2026
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This study combines modelled ocean surface concentrations of major marine organic groups with the aerosol-climate model ECHAM-HAM to quantify species-resolved primary marine organic aerosol emissions from 1990 to 2019. Strong seasonality appears, driven by productivity and summer sea-ice loss. Emissions and burdens rise over time, with regional differences across the Arctic and aerosol species.
Lina A. Holthusen, Hermann W. Bange, Thomas H. Badewien, Julia C. Muchowski, Tina Santl-Temkiv, Jennie Spicker Schmidt, Oliver Wurl, and Damian L. Arévalo-Martínez
The Cryosphere, 20, 535–550, https://doi.org/10.5194/tc-20-535-2026, https://doi.org/10.5194/tc-20-535-2026, 2026
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In spring 2023, in the Fram Strait, we investigated the near-surface distribution of the greenhouse gases methane and nitrous oxide in open leads and under sea ice to address the lack of observations in the Arctic Ocean. The study area acted as a source for both gases, and the onset of sea ice melt affected their concentrations and emissions. Surface-active substances accumulated in the sea-surface microlayer of open leads during an algal bloom, potentially attenuating greenhouse gas emissions.
Joachim Schönfeld, Hermann W. Bange, Helmke Hepach, and Svenja Reents
Biogeosciences, 23, 421–440, https://doi.org/10.5194/bg-23-421-2026, https://doi.org/10.5194/bg-23-421-2026, 2026
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The current state of intertidal waters at Bottsand lagoon on the Baltic Sea coast, and on the mudflats off Schobüll on the North Sea coast of Schleswig-Holstein, Germany was assessed with a 36-month time series of water level, temperature, and salinity measurements. Periods of strong precipitation, high Elbe river discharge, and high solar radiation caused a higher data variability as compared to the off shore monitoring stations Boknis Eck in the Baltic and Sylt Roads in the North Sea.
Denis Leppla, Stefanie Hildmann, Nora Zannoni, Leslie A. Kremper, Bruna A. Holanda, Jonathan Williams, Christopher Pöhlker, Stefan Wolff, Marta Sà, Maria Christina Solci, Ulrich Pöschl, and Thorsten Hoffmann
Atmos. Chem. Phys., 26, 365–390, https://doi.org/10.5194/acp-26-365-2026, https://doi.org/10.5194/acp-26-365-2026, 2026
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The chemical composition of organic particles in the Amazon rainforest was investigated to understand how biogenic and human emissions influence the atmosphere in this unique ecosystem. Seasonal patterns were found where wet seasons were dominated by biogenic compounds from natural sources while dry seasons showed increased fire-related pollutants. These findings reveal how emissions, fires and long-range transport affect atmospheric chemistry, with implications for climate models.
Shihan Sun, Paul I. Palmer, Richard Siddans, Brian J. Kerridge, Lucy Ventress, Achim Edtbauer, Akima Ringsdorf, Eva Y. Pfannerstill, and Jonathan Williams
Atmos. Chem. Phys., 25, 15801–15818, https://doi.org/10.5194/acp-25-15801-2025, https://doi.org/10.5194/acp-25-15801-2025, 2025
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Isoprene released by plants can impact atmospheric chemistry and climate. The Amazon rainforest is a major source of isoprene. We derived isoprene emissions using satellite retrievals of isoprene columns and a chemical transport model. We evaluated our isoprene emission estimates using ground-based isoprene observations and satellite retrievals of formaldehyde. We found that using satellite retrievals of isoprene can help us better understand isoprene emissions over the Amazon.
Gesa Schulz, Kirstin Dähnke, Tina Sanders, Jan Penopp, Hermann W. Bange, Rena Czeschel, and Birgit Gaye
Biogeosciences, 22, 5943–5959, https://doi.org/10.5194/bg-22-5943-2025, https://doi.org/10.5194/bg-22-5943-2025, 2025
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Oxygen-minimum zones (OMZs) are low-oxygen ocean areas that deplete nitrogen, a key marine nutrient. Understanding nitrogen cycling in OMZs is crucial for the global nitrogen cycle. This study examined nitrogen cycling in the OMZ of the Bay of Bengal and the East Equatorial Indian Ocean, revealing limited mixing between both regions. Surface phytoplankton consumes nitrate, while deeper nitrification recycles nitrogen. In the BoB’s OMZ (100–300 m), nitrogen loss likely occurs via anammox.
Hongyan Xi, Marine Bretagnon, Ehsan Mehdipour, Julien Demaria, Antoine Mangin, and Astrid Bracher
State Planet, 6-osr9, 7, https://doi.org/10.5194/sp-6-osr9-7-2025, https://doi.org/10.5194/sp-6-osr9-7-2025, 2025
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To better understand the marine phytoplankton variability on different scales in both space and time, this study proposes a machine-learning-based scheme to provide continuous and consistent long-term observations of various phytoplankton groups from space on a global scale, which enables time series analysis for further trend and anomaly investigations. This study provides an essential ocean variable to help assess the ocean health in the biogeochemical aspect.
Jasna V. Pittman, Bruce C. Daube, Steven C. Wofsy, Elliot L. Atlas, Maria A. Navarro, Eric J. Hintsa, Fred L. Moore, Geoff S. Dutton, James W. Elkins, Troy D. Thornberry, Andrew W. Rollins, Eric J. Jensen, Thaopaul Bui, Jonathan Dean-Day, and Leonhard Pfister
Atmos. Chem. Phys., 25, 7543–7562, https://doi.org/10.5194/acp-25-7543-2025, https://doi.org/10.5194/acp-25-7543-2025, 2025
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Biomass fires emit aerosols and precursors that can provide a novel environment for initiating stratospheric ozone loss. The Airborne Tropical TRopopause EXperiment campaign sampled the western Pacific, the dominant longitudes for surface air lofted by convection to enter the global stratosphere. Aircraft measurements over multiple flights revealed persistent layers of biomass burning pollutants entering the lower stratosphere and originating from fires as far away as Africa and Indonesia.
Anisbel Leon-Marcos, Moritz Zeising, Manuela van Pinxteren, Sebastian Zeppenfeld, Astrid Bracher, Elena Barbaro, Anja Engel, Matteo Feltracco, Ina Tegen, and Bernd Heinold
Geosci. Model Dev., 18, 4183–4213, https://doi.org/10.5194/gmd-18-4183-2025, https://doi.org/10.5194/gmd-18-4183-2025, 2025
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This study represents the primary marine organic aerosol (PMOA) emissions, focusing on their sea–atmosphere transfer. Using the FESOM2.1–REcoM3 model, concentrations of key organic biomolecules were estimated and integrated into the ECHAM6.3–HAM2.3 aerosol–climate model. Results highlight the influence of marine biological activity and surface winds on PMOA emissions, with reasonably good agreement with observations improving aerosol representation in the southern oceans.
Johnathan Daniel Maxey, Neil D. Hartstein, Hermann W. Bange, and Moritz Müller
Biogeosciences, 21, 5613–5637, https://doi.org/10.5194/bg-21-5613-2024, https://doi.org/10.5194/bg-21-5613-2024, 2024
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The distribution of N2O in fjord-like estuaries is poorly described in the Southern Hemisphere. Our study describes N2O distribution and its drivers in one such system in Macquarie Harbour, Tasmania. Water samples were collected seasonally in 2022 and 2023. Results show the system removes atmospheric N2O when river flow is high, whereas the system emits N2O when the river flow is low. N2O generated in basins is intercepted by the surface water and exported to the ocean during high river flow.
Ryan Hossaini, David Sherry, Zihao Wang, Martyn P. Chipperfield, Wuhu Feng, David E. Oram, Karina E. Adcock, Stephen A. Montzka, Isobel J. Simpson, Andrea Mazzeo, Amber A. Leeson, Elliot Atlas, and Charles C.-K. Chou
Atmos. Chem. Phys., 24, 13457–13475, https://doi.org/10.5194/acp-24-13457-2024, https://doi.org/10.5194/acp-24-13457-2024, 2024
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DCE (1,2-dichloroethane) is an industrial chemical used to produce PVC (polyvinyl chloride). We analysed DCE production data to estimate global DCE emissions (2002–2020). The emissions were included in an atmospheric model and evaluated by comparing simulated DCE to DCE measurements in the troposphere. We show that DCE contributes ozone-depleting Cl to the stratosphere and that this has increased with increasing DCE emissions. DCE’s impact on stratospheric O3 is currently small but non-zero.
Akima Ringsdorf, Achim Edtbauer, Bruna Holanda, Christopher Poehlker, Marta O. Sá, Alessandro Araújo, Jürgen Kesselmeier, Jos Lelieveld, and Jonathan Williams
Atmos. Chem. Phys., 24, 11883–11910, https://doi.org/10.5194/acp-24-11883-2024, https://doi.org/10.5194/acp-24-11883-2024, 2024
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We show the average height distribution of separately observed aldehydes and ketones over a day and discuss their rainforest-specific sources and sinks as well as their seasonal changes above the Amazon. Ketones have much longer atmospheric lifetimes than aldehydes and thus different implications for atmospheric chemistry. However, they are commonly observed together, which we overcome by measuring with a NO+ chemical ionization mass spectrometer for the first time in the Amazon rainforest.
Sankirna D. Joge, Anoop S. Mahajan, Shrivardhan Hulswar, Christa A. Marandino, Martí Galí, Thomas G. Bell, Mingxi Yang, and Rafel Simó
Biogeosciences, 21, 4453–4467, https://doi.org/10.5194/bg-21-4453-2024, https://doi.org/10.5194/bg-21-4453-2024, 2024
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Dimethyl sulfide (DMS) is the largest natural source of sulfur in the atmosphere and leads to the formation of cloud condensation nuclei. DMS emissions and quantification of their impacts have large uncertainties, but a detailed study on the range of emissions and drivers of their uncertainty is missing to date. The emissions are calculated from the seawater DMS concentrations and a flux parameterization. Here we quantify the differences in the effect of flux parameterizations used in models.
Sankirna D. Joge, Anoop S. Mahajan, Shrivardhan Hulswar, Christa A. Marandino, Martí Galí, Thomas G. Bell, and Rafel Simó
Biogeosciences, 21, 4439–4452, https://doi.org/10.5194/bg-21-4439-2024, https://doi.org/10.5194/bg-21-4439-2024, 2024
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Dimethyl sulfide (DMS) is the largest natural source of sulfur in the atmosphere and leads to the formation of cloud condensation nuclei. DMS emission and quantification of its impacts have large uncertainties, but a detailed study on the emissions and drivers of their uncertainty is missing to date. The emissions are usually calculated from the seawater DMS concentrations and a flux parameterization. Here we quantify the differences in DMS seawater products, which can affect DMS fluxes.
Luiz A. T. Machado, Jürgen Kesselmeier, Santiago Botía, Hella van Asperen, Meinrat O. Andreae, Alessandro C. de Araújo, Paulo Artaxo, Achim Edtbauer, Rosaria R. Ferreira, Marco A. Franco, Hartwig Harder, Sam P. Jones, Cléo Q. Dias-Júnior, Guido G. Haytzmann, Carlos A. Quesada, Shujiro Komiya, Jost Lavric, Jos Lelieveld, Ingeborg Levin, Anke Nölscher, Eva Pfannerstill, Mira L. Pöhlker, Ulrich Pöschl, Akima Ringsdorf, Luciana Rizzo, Ana M. Yáñez-Serrano, Susan Trumbore, Wanda I. D. Valenti, Jordi Vila-Guerau de Arellano, David Walter, Jonathan Williams, Stefan Wolff, and Christopher Pöhlker
Atmos. Chem. Phys., 24, 8893–8910, https://doi.org/10.5194/acp-24-8893-2024, https://doi.org/10.5194/acp-24-8893-2024, 2024
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Composite analysis of gas concentration before and after rainfall, during the day and night, gives insight into the complex relationship between trace gas variability and precipitation. The analysis helps us to understand the sources and sinks of trace gases within a forest ecosystem. It elucidates processes that are not discernible under undisturbed conditions and contributes to a deeper understanding of the trace gas life cycle and its intricate interactions with cloud dynamics in the Amazon.
Riel Carlo O. Ingeniero, Gesa Schulz, and Hermann W. Bange
Biogeosciences, 21, 3425–3440, https://doi.org/10.5194/bg-21-3425-2024, https://doi.org/10.5194/bg-21-3425-2024, 2024
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Our research is the first to measure dissolved NO concentrations in temperate estuarine waters, providing insights into its distribution under varying conditions and enhancing our understanding of its production processes. Dissolved NO was supersaturated in the Elbe Estuary, indicating that it is a source of atmospheric NO. The observed distribution of dissolved NO most likely resulted from nitrification.
Andrea E. Gordon, Cameron R. Homeyer, Jessica B. Smith, Rei Ueyama, Jonathan M. Dean-Day, Elliot L. Atlas, Kate Smith, Jasna V. Pittman, David S. Sayres, David M. Wilmouth, Apoorva Pandey, Jason M. St. Clair, Thomas F. Hanisco, Jennifer Hare, Reem A. Hannun, Steven Wofsy, Bruce C. Daube, and Stephen Donnelly
Atmos. Chem. Phys., 24, 7591–7608, https://doi.org/10.5194/acp-24-7591-2024, https://doi.org/10.5194/acp-24-7591-2024, 2024
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In situ airborne observations of ongoing tropopause-overshooting convection and an above-anvil cirrus plume from the 31 May 2022 flight of the Dynamics and Chemistry of the Summer Stratosphere (DCOTSS) field campaign are examined. Upper troposphere and lower stratosphere composition changes are evaluated along with possible contributing dynamical and physical processes. Measurements reveal multiple changes in air mass composition and stratospheric hydration throughout the flight.
Dennis Booge, Jerry F. Tjiputra, Dirk J. L. Olivié, Birgit Quack, and Kirstin Krüger
Earth Syst. Dynam., 15, 801–816, https://doi.org/10.5194/esd-15-801-2024, https://doi.org/10.5194/esd-15-801-2024, 2024
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Oceanic bromoform, produced by algae, is an important precursor of atmospheric bromine, highlighting the importance of implementing these emissions in climate models. The simulated mean oceanic concentrations align well with observations, while the mean atmospheric values are lower than the observed ones. Modelled annual mean emissions mostly occur from the sea to the air and are driven by oceanic concentrations, sea surface temperature, and wind speed, which depend on season and location.
Hanqin Tian, Naiqing Pan, Rona L. Thompson, Josep G. Canadell, Parvadha Suntharalingam, Pierre Regnier, Eric A. Davidson, Michael Prather, Philippe Ciais, Marilena Muntean, Shufen Pan, Wilfried Winiwarter, Sönke Zaehle, Feng Zhou, Robert B. Jackson, Hermann W. Bange, Sarah Berthet, Zihao Bian, Daniele Bianchi, Alexander F. Bouwman, Erik T. Buitenhuis, Geoffrey Dutton, Minpeng Hu, Akihiko Ito, Atul K. Jain, Aurich Jeltsch-Thömmes, Fortunat Joos, Sian Kou-Giesbrecht, Paul B. Krummel, Xin Lan, Angela Landolfi, Ronny Lauerwald, Ya Li, Chaoqun Lu, Taylor Maavara, Manfredi Manizza, Dylan B. Millet, Jens Mühle, Prabir K. Patra, Glen P. Peters, Xiaoyu Qin, Peter Raymond, Laure Resplandy, Judith A. Rosentreter, Hao Shi, Qing Sun, Daniele Tonina, Francesco N. Tubiello, Guido R. van der Werf, Nicolas Vuichard, Junjie Wang, Kelley C. Wells, Luke M. Western, Chris Wilson, Jia Yang, Yuanzhi Yao, Yongfa You, and Qing Zhu
Earth Syst. Sci. Data, 16, 2543–2604, https://doi.org/10.5194/essd-16-2543-2024, https://doi.org/10.5194/essd-16-2543-2024, 2024
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Atmospheric concentrations of nitrous oxide (N2O), a greenhouse gas 273 times more potent than carbon dioxide, have increased by 25 % since the preindustrial period, with the highest observed growth rate in 2020 and 2021. This rapid growth rate has primarily been due to a 40 % increase in anthropogenic emissions since 1980. Observed atmospheric N2O concentrations in recent years have exceeded the worst-case climate scenario, underscoring the importance of reducing anthropogenic N2O emissions.
Sebastian Zeppenfeld, Manuela van Pinxteren, Markus Hartmann, Moritz Zeising, Astrid Bracher, and Hartmut Herrmann
Atmos. Chem. Phys., 23, 15561–15587, https://doi.org/10.5194/acp-23-15561-2023, https://doi.org/10.5194/acp-23-15561-2023, 2023
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Marine carbohydrates are produced in the surface of the ocean, enter the atmophere as part of sea spray aerosol particles, and potentially contribute to the formation of fog and clouds. Here, we present the results of a sea–air transfer study of marine carbohydrates conducted in the high Arctic. Besides a chemo-selective transfer, we observed a quick atmospheric aging of carbohydrates, possibly as a result of both biotic and abiotic processes.
Aleksandra Cherkasheva, Rustam Manurov, Piotr Kowalczuk, Alexandra N. Loginova, Monika Zabłocka, and Astrid Bracher
EGUsphere, https://doi.org/10.5194/egusphere-2023-2495, https://doi.org/10.5194/egusphere-2023-2495, 2023
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We aimed to improve the quality of regional Greenland Sea primary production estimates. Seventy two versions of primary production model setups were tested against field data. Best performing models had local biomass and light absorption profiles. Thus by using local parametrizations for these parameters we can improve Arctic primary production model performance. Annual Greenland Sea basin estimates are larger than previously reported.
Susanna Strada, Andrea Pozzer, Graziano Giuliani, Erika Coppola, Fabien Solmon, Xiaoyan Jiang, Alex Guenther, Efstratios Bourtsoukidis, Dominique Serça, Jonathan Williams, and Filippo Giorgi
Atmos. Chem. Phys., 23, 13301–13327, https://doi.org/10.5194/acp-23-13301-2023, https://doi.org/10.5194/acp-23-13301-2023, 2023
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Water deficit modifies emissions of isoprene, an aromatic compound released by plants that influences the production of an air pollutant such as ozone. Numerical modelling shows that, during the warmest and driest summers, isoprene decreases between −20 and −60 % over the Euro-Mediterranean region, while near-surface ozone only diminishes by a few percent. Decreases in isoprene emissions not only happen under dry conditions, but also could occur after prolonged or repeated water deficits.
Hongyan Xi, Marine Bretagnon, Svetlana N. Losa, Vanda Brotas, Mara Gomes, Ilka Peeken, Leonardo M. A. Alvarado, Antoine Mangin, and Astrid Bracher
State Planet, 1-osr7, 5, https://doi.org/10.5194/sp-1-osr7-5-2023, https://doi.org/10.5194/sp-1-osr7-5-2023, 2023
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Continuous monitoring of phytoplankton groups using satellite data is crucial for understanding global ocean phytoplankton variability on different scales in both space and time. This study focuses on four important phytoplankton groups in the Atlantic Ocean to investigate their trend, anomaly and phenological characteristics both over the whole region and at subscales. This study paves the way to promote potentially important ocean monitoring indicators to help sustain the ocean health.
Gesa Schulz, Tina Sanders, Yoana G. Voynova, Hermann W. Bange, and Kirstin Dähnke
Biogeosciences, 20, 3229–3247, https://doi.org/10.5194/bg-20-3229-2023, https://doi.org/10.5194/bg-20-3229-2023, 2023
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Nitrous oxide (N2O) is an important greenhouse gas. However, N2O emissions from estuaries underlie significant uncertainties due to limited data availability and high spatiotemporal variability. We found the Elbe Estuary (Germany) to be a year-round source of N2O, with the highest emissions in winter along with high nitrogen loads. However, in spring and summer, N2O emissions did not decrease alongside lower nitrogen loads because organic matter fueled in situ N2O production along the estuary.
Eliane Gomes Alves, Raoni Aquino Santana, Cléo Quaresma Dias-Júnior, Santiago Botía, Tyeen Taylor, Ana Maria Yáñez-Serrano, Jürgen Kesselmeier, Efstratios Bourtsoukidis, Jonathan Williams, Pedro Ivo Lembo Silveira de Assis, Giordane Martins, Rodrigo de Souza, Sérgio Duvoisin Júnior, Alex Guenther, Dasa Gu, Anywhere Tsokankunku, Matthias Sörgel, Bruce Nelson, Davieliton Pinto, Shujiro Komiya, Diogo Martins Rosa, Bettina Weber, Cybelli Barbosa, Michelle Robin, Kenneth J. Feeley, Alvaro Duque, Viviana Londoño Lemos, Maria Paula Contreras, Alvaro Idarraga, Norberto López, Chad Husby, Brett Jestrow, and Iván Mauricio Cely Toro
Atmos. Chem. Phys., 23, 8149–8168, https://doi.org/10.5194/acp-23-8149-2023, https://doi.org/10.5194/acp-23-8149-2023, 2023
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Isoprene is emitted mainly by plants and can influence atmospheric chemistry and air quality. But, there are uncertainties in model emission estimates and follow-up atmospheric processes. In our study, with long-term observational datasets of isoprene and biological and environmental factors from central Amazonia, we show that isoprene emission estimates could be improved when biological processes were mechanistically incorporated into the model.
Guanlin Li, Damian L. Arévalo-Martínez, Riel Carlo O. Ingeniero, and Hermann W. Bange
EGUsphere, https://doi.org/10.5194/egusphere-2023-771, https://doi.org/10.5194/egusphere-2023-771, 2023
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Dissolved carbon monoxide (CO) surface concentrations were first measured at 14 stations in the Ria Formosa Lagoon system in May 2021. Ria Formosa was a source of atmospheric CO. Microbial consumption accounted for 83 % of the CO production. The results of a 48-hour irradiation experiment with aquaculture effluent water indicated that aquaculture facilities in the Ria Formosa Lagoon seem to be a negligible source of atmospheric CO.
Hanna I. Campen, Damian L. Arévalo-Martínez, and Hermann W. Bange
Biogeosciences, 20, 1371–1379, https://doi.org/10.5194/bg-20-1371-2023, https://doi.org/10.5194/bg-20-1371-2023, 2023
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Carbon monoxide (CO) is a climate-relevant trace gas emitted from the ocean. However, oceanic CO cycling is understudied. Results from incubation experiments conducted in the Fram Strait (Arctic Ocean) indicated that (i) pH did not affect CO cycling and (ii) enhanced CO production and consumption were positively correlated with coloured dissolved organic matter and nitrate concentrations. This suggests microbial CO uptake to be the driving factor for CO cycling in the Arctic Ocean.
Lisa Ernle, Monika Akima Ringsdorf, and Jonathan Williams
Atmos. Meas. Tech., 16, 1179–1194, https://doi.org/10.5194/amt-16-1179-2023, https://doi.org/10.5194/amt-16-1179-2023, 2023
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Atmospheric ozone can induce artefacts in volatile organic compound measurements. Laboratory tests were made using GC-MS and PTR-MS aircraft systems under tropospheric and stratospheric conditions of humidity and ozone, with and without sodium thiosulfate filter scrubbers. Ozone in dry air produces some carbonyls and degrades alkenes. The scrubber lifetime depends on ozone concentration, flow rate and humidity. For the troposphere with scrubber, no significant artefacts were found over 14 d.
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.
Denis Leppla, Nora Zannoni, Leslie Kremper, Jonathan Williams, Christopher Pöhlker, Marta Sá, Maria Christina Solci, and Thorsten Hoffmann
Atmos. Chem. Phys., 23, 809–820, https://doi.org/10.5194/acp-23-809-2023, https://doi.org/10.5194/acp-23-809-2023, 2023
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Chiral chemodiversity plays a critical role in biochemical processes such as insect and plant communication. Here we report on the measurement of chiral-specified secondary organic aerosol in the Amazon rainforest. The results show that the chiral ratio is mainly determined by large-scale emission processes. Characteristic emissions of chiral aerosol precursors from different forest ecosystems can thus provide large-scale information on different biogenic sources via chiral particle analysis.
André Valente, Shubha Sathyendranath, Vanda Brotas, Steve Groom, Michael Grant, Thomas Jackson, Andrei Chuprin, Malcolm Taberner, Ruth Airs, David Antoine, Robert Arnone, William M. Balch, Kathryn Barker, Ray Barlow, Simon Bélanger, Jean-François Berthon, Şükrü Beşiktepe, Yngve Borsheim, Astrid Bracher, Vittorio Brando, Robert J. W. Brewin, Elisabetta Canuti, Francisco P. Chavez, Andrés Cianca, Hervé Claustre, Lesley Clementson, Richard Crout, Afonso Ferreira, Scott Freeman, Robert Frouin, Carlos García-Soto, Stuart W. Gibb, Ralf Goericke, Richard Gould, Nathalie Guillocheau, Stanford B. Hooker, Chuamin Hu, Mati Kahru, Milton Kampel, Holger Klein, Susanne Kratzer, Raphael Kudela, Jesus Ledesma, Steven Lohrenz, Hubert Loisel, Antonio Mannino, Victor Martinez-Vicente, Patricia Matrai, David McKee, Brian G. Mitchell, Tiffany Moisan, Enrique Montes, Frank Muller-Karger, Aimee Neeley, Michael Novak, Leonie O'Dowd, Michael Ondrusek, Trevor Platt, Alex J. Poulton, Michel Repecaud, Rüdiger Röttgers, Thomas Schroeder, Timothy Smyth, Denise Smythe-Wright, Heidi M. Sosik, Crystal Thomas, Rob Thomas, Gavin Tilstone, Andreia Tracana, Michael Twardowski, Vincenzo Vellucci, Kenneth Voss, Jeremy Werdell, Marcel Wernand, Bozena Wojtasiewicz, Simon Wright, and Giuseppe Zibordi
Earth Syst. Sci. Data, 14, 5737–5770, https://doi.org/10.5194/essd-14-5737-2022, https://doi.org/10.5194/essd-14-5737-2022, 2022
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A compiled set of in situ data is vital to evaluate the quality of ocean-colour satellite data records. Here we describe the global compilation of bio-optical in situ data (spanning from 1997 to 2021) used for the validation of the ocean-colour products from the ESA Ocean Colour Climate Change Initiative (OC-CCI). The compilation merges and harmonizes several in situ data sources into a simple format that could be used directly for the evaluation of satellite-derived ocean-colour data.
Markus Jesswein, Rafael P. Fernandez, Lucas Berná, Alfonso Saiz-Lopez, Jens-Uwe Grooß, Ryan Hossaini, Eric C. Apel, Rebecca S. Hornbrook, Elliot L. Atlas, Donald R. Blake, Stephen Montzka, Timo Keber, Tanja Schuck, Thomas Wagenhäuser, and Andreas Engel
Atmos. Chem. Phys., 22, 15049–15070, https://doi.org/10.5194/acp-22-15049-2022, https://doi.org/10.5194/acp-22-15049-2022, 2022
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This study presents the global and seasonal distribution of the two major brominated short-lived substances CH2Br2 and CHBr3 in the upper troposphere and lower stratosphere based on observations from several aircraft campaigns. They show similar seasonality for both hemispheres, except in the respective hemispheric autumn lower stratosphere. A comparison with the TOMCAT and CAM-Chem models shows good agreement in the annual mean but larger differences in the seasonal consideration.
Li Zhou, Dennis Booge, Miming Zhang, and Christa A. Marandino
Biogeosciences, 19, 5021–5040, https://doi.org/10.5194/bg-19-5021-2022, https://doi.org/10.5194/bg-19-5021-2022, 2022
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Trace gas air–sea exchange exerts an important control on air quality and climate, especially in the Southern Ocean (SO). Almost all of the measurements there are skewed to summer, but it is essential to expand our measurement database over greater temporal and spatial scales. Therefore, we report measured concentrations of dimethylsulfide (DMS, as well as related sulfur compounds) and isoprene in the Atlantic sector of the SO. The observations of isoprene are the first in the winter in the SO.
Sonja Gindorf, Hermann W. Bange, Dennis Booge, and Annette Kock
Biogeosciences, 19, 4993–5006, https://doi.org/10.5194/bg-19-4993-2022, https://doi.org/10.5194/bg-19-4993-2022, 2022
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Methane is a climate-relevant greenhouse gas which is emitted to the atmosphere from coastal areas such as the Baltic Sea. We measured the methane concentration in the water column of the western Kiel Bight. Methane concentrations were higher in September than in June. We found no relationship between the 2018 European heatwave and methane concentrations. Our results show that the methane distribution in the water column is strongly affected by temporal and spatial variabilities.
Mengze Li, Andrea Pozzer, Jos Lelieveld, and Jonathan Williams
Earth Syst. Sci. Data, 14, 4351–4364, https://doi.org/10.5194/essd-14-4351-2022, https://doi.org/10.5194/essd-14-4351-2022, 2022
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We present a northern hemispheric airborne measurement dataset of atmospheric ethane, propane and methane and temporal trends for the time period 2006–2016 in the upper troposphere and lower stratosphere. The growth rates of ethane, methane, and propane in the upper troposphere are -2.24, 0.33, and -0.78 % yr-1, respectively, and in the lower stratosphere they are -3.27, 0.26, and -4.91 % yr-1, respectively, in 2006–2016.
Therese S. Carter, Colette L. Heald, Jesse H. Kroll, Eric C. Apel, Donald Blake, Matthew Coggon, Achim Edtbauer, Georgios Gkatzelis, Rebecca S. Hornbrook, Jeff Peischl, Eva Y. Pfannerstill, Felix Piel, Nina G. Reijrink, Akima Ringsdorf, Carsten Warneke, Jonathan Williams, Armin Wisthaler, and Lu Xu
Atmos. Chem. Phys., 22, 12093–12111, https://doi.org/10.5194/acp-22-12093-2022, https://doi.org/10.5194/acp-22-12093-2022, 2022
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Fires emit many gases which can contribute to smog and air pollution. However, the amount and properties of these chemicals are not well understood, so this work updates and expands their representation in a global atmospheric model, including by adding new chemicals. We confirm that this updated representation generally matches measurements taken in several fire regions. We then show that fires provide ~15 % of atmospheric reactivity globally and more than 75 % over fire source regions.
Simon F. Reifenberg, Anna Martin, Matthias Kohl, Sara Bacer, Zaneta Hamryszczak, Ivan Tadic, Lenard Röder, Daniel J. Crowley, Horst Fischer, Katharina Kaiser, Johannes Schneider, Raphael Dörich, John N. Crowley, Laura Tomsche, Andreas Marsing, Christiane Voigt, Andreas Zahn, Christopher Pöhlker, Bruna A. Holanda, Ovid Krüger, Ulrich Pöschl, Mira Pöhlker, Patrick Jöckel, Marcel Dorf, Ulrich Schumann, Jonathan Williams, Birger Bohn, Joachim Curtius, Hardwig Harder, Hans Schlager, Jos Lelieveld, and Andrea Pozzer
Atmos. Chem. Phys., 22, 10901–10917, https://doi.org/10.5194/acp-22-10901-2022, https://doi.org/10.5194/acp-22-10901-2022, 2022
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In this work we use a combination of observational data from an aircraft campaign and model results to investigate the effect of the European lockdown due to COVID-19 in spring 2020. Using model results, we show that the largest relative changes to the atmospheric composition caused by the reduced emissions are located in the upper troposphere around aircraft cruise altitude, while the largest absolute changes are present at the surface.
Patrick Dewald, Clara M. Nussbaumer, Jan Schuladen, Akima Ringsdorf, Achim Edtbauer, Horst Fischer, Jonathan Williams, Jos Lelieveld, and John N. Crowley
Atmos. Chem. Phys., 22, 7051–7069, https://doi.org/10.5194/acp-22-7051-2022, https://doi.org/10.5194/acp-22-7051-2022, 2022
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We measured the gas-phase reactivity of the NO3 radical on the summit (825 m a.s.l.) of a semi-rural mountain in southwestern Germany in July 2021. The impact of VOC-induced NO3 losses (mostly monoterpenes) competing with a loss by reaction with NO and photolysis throughout the diel cycle was estimated. Besides chemistry, boundary layer dynamics and plant-physiological processes presumably have a great impact on our observations, which were compared to previous NO3 measurements at the same site.
Susann Tegtmeier, Christa Marandino, Yue Jia, Birgit Quack, and Anoop S. Mahajan
Atmos. Chem. Phys., 22, 6625–6676, https://doi.org/10.5194/acp-22-6625-2022, https://doi.org/10.5194/acp-22-6625-2022, 2022
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In the atmosphere over the Indian Ocean, intense anthropogenic pollution from Southeast Asia mixes with pristine oceanic air. During the winter monsoon, high pollution levels are regularly observed over the entire northern Indian Ocean, while during the summer monsoon, clean air dominates. Here, we review current progress in detecting and understanding atmospheric gas-phase composition over the Indian Ocean and its impacts on the upper atmosphere, oceanic biogeochemistry, and marine ecosystems.
Eric A. Ray, Elliot L. Atlas, Sue Schauffler, Sofia Chelpon, Laura Pan, Harald Bönisch, and Karen H. Rosenlof
Atmos. Chem. Phys., 22, 6539–6558, https://doi.org/10.5194/acp-22-6539-2022, https://doi.org/10.5194/acp-22-6539-2022, 2022
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The movement of air masses and the trace gases they contain from the Earth’s surface into the upper troposphere and lower stratosphere (UTLS) can have important implications for the radiative and chemical balance of the atmosphere. In this study we build on recent techniques and use new ones to estimate a range of transport diagnostics based on simultaneously measured trace gases in the UTLS during the monsoon season in North America.
M. A. Soppa, D. A. Dinh, B. Silva, F. Steinmetz, L. Alvarado, and A. Bracher
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVI-1-W1-2021, 69–72, https://doi.org/10.5194/isprs-archives-XLVI-1-W1-2021-69-2022, https://doi.org/10.5194/isprs-archives-XLVI-1-W1-2021-69-2022, 2022
Charitha Pattiaratchi, Mirjam van der Mheen, Cathleen Schlundt, Bhavani E. Narayanaswamy, Appalanaidu Sura, Sara Hajbane, Rachel White, Nimit Kumar, Michelle Fernandes, and Sarath Wijeratne
Ocean Sci., 18, 1–28, https://doi.org/10.5194/os-18-1-2022, https://doi.org/10.5194/os-18-1-2022, 2022
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The Indian Ocean receives a large proportion of plastics, but very few studies have addressed the sources, transport pathways, and sinks. There is a scarcity of observational data for the Indian Ocean. Most plastic sources are derived from rivers, although the amount derived from fishing activity (ghost nets, discarded ropes) is unknown. The unique topographic features of the Indian Ocean that create the monsoons and reversing currents have a large influence on the transport and sinks.
Wangwang Ye, Hermann W. Bange, Damian L. Arévalo-Martínez, Hailun He, Yuhong Li, Jianwen Wen, Jiexia Zhang, Jian Liu, Man Wu, and Liyang Zhan
Biogeosciences Discuss., https://doi.org/10.5194/bg-2021-334, https://doi.org/10.5194/bg-2021-334, 2022
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CH4 is the second important greenhouse gas after CO2. We show that CH4 consumption and sea-ice melting influence the CH4 distribution in the Ross Sea (Southern Ocean), causing undersaturation and net uptake of CH4 during summertime. This study confirms the capability of surface water in the high-latitude Southern Ocean regions to take up atmospheric CH4 which, in turn, will help to improve predictions of how CH4 release/uptake from the ocean will develop when sea-ice retreats in the future.
Clara M. Nussbaumer, John N. Crowley, Jan Schuladen, Jonathan Williams, Sascha Hafermann, Andreas Reiffs, Raoul Axinte, Hartwig Harder, Cheryl Ernest, Anna Novelli, Katrin Sala, Monica Martinez, Chinmay Mallik, Laura Tomsche, Christian Plass-Dülmer, Birger Bohn, Jos Lelieveld, and Horst Fischer
Atmos. Chem. Phys., 21, 18413–18432, https://doi.org/10.5194/acp-21-18413-2021, https://doi.org/10.5194/acp-21-18413-2021, 2021
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HCHO is an important atmospheric trace gas influencing the photochemical processes in the Earth’s atmosphere, including the budget of HOx and the abundance of tropospheric O3. This research presents the photochemical calculations of HCHO and O3 based on three field campaigns across Europe. We show that HCHO production via the oxidation of only four volatile organic compound precursors, i.e., CH4, CH3CHO, C5H8 and CH3OH, can balance the observed loss at all sites well.
Dirk Dienhart, John N. Crowley, Efstratios Bourtsoukidis, Achim Edtbauer, Philipp G. Eger, Lisa Ernle, Hartwig Harder, Bettina Hottmann, Monica Martinez, Uwe Parchatka, Jean-Daniel Paris, Eva Y. Pfannerstill, Roland Rohloff, Jan Schuladen, Christof Stönner, Ivan Tadic, Sebastian Tauer, Nijing Wang, Jonathan Williams, Jos Lelieveld, and Horst Fischer
Atmos. Chem. Phys., 21, 17373–17388, https://doi.org/10.5194/acp-21-17373-2021, https://doi.org/10.5194/acp-21-17373-2021, 2021
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We present the first ship-based in situ measurements of formaldehyde (HCHO), hydroxyl radicals (OH) and the OH reactivity around the Arabian Peninsula. Regression analysis of the HCHO production rate and the related OH chemistry revealed the regional HCHO yield αeff, which represents the different chemical regimes encountered. Highest values were found for the Arabian Gulf (also known as the Persian Gulf), which highlights this region as a hotspot of photochemical air pollution.
Paul D. Hamer, Virginie Marécal, Ryan Hossaini, Michel Pirre, Gisèle Krysztofiak, Franziska Ziska, Andreas Engel, Stephan Sala, Timo Keber, Harald Bönisch, Elliot Atlas, Kirstin Krüger, Martyn Chipperfield, Valery Catoire, Azizan A. Samah, Marcel Dorf, Phang Siew Moi, Hans Schlager, and Klaus Pfeilsticker
Atmos. Chem. Phys., 21, 16955–16984, https://doi.org/10.5194/acp-21-16955-2021, https://doi.org/10.5194/acp-21-16955-2021, 2021
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Bromoform is a stratospheric ozone-depleting gas released by seaweed and plankton transported to the stratosphere via convection in the tropics. We study the chemical interactions of bromoform and its derivatives within convective clouds using a cloud-scale model and observations. Our findings are that soluble bromine gases are efficiently washed out and removed within the convective clouds and that most bromine is transported vertically to the upper troposphere in the form of bromoform.
Philipp G. Eger, Luc Vereecken, Rolf Sander, Jan Schuladen, Nicolas Sobanski, Horst Fischer, Einar Karu, Jonathan Williams, Ville Vakkari, Tuukka Petäjä, Jos Lelieveld, Andrea Pozzer, and John N. Crowley
Atmos. Chem. Phys., 21, 14333–14349, https://doi.org/10.5194/acp-21-14333-2021, https://doi.org/10.5194/acp-21-14333-2021, 2021
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We determine the impact of pyruvic acid photolysis on the formation of acetaldehyde and peroxy radicals during summer and autumn in the Finnish boreal forest using a data-constrained box model. Our results are dependent on the chosen scenario in which the overall quantum yield and the photolysis products are varied. We highlight that pyruvic acid photolysis can be an important contributor to acetaldehyde and peroxy radical formation in remote, forested regions.
James Weber, Scott Archer-Nicholls, Nathan Luke Abraham, Youngsub M. Shin, Thomas J. Bannan, Carl J. Percival, Asan Bacak, Paulo Artaxo, Michael Jenkin, M. Anwar H. Khan, Dudley E. Shallcross, Rebecca H. Schwantes, Jonathan Williams, and Alex T. Archibald
Geosci. Model Dev., 14, 5239–5268, https://doi.org/10.5194/gmd-14-5239-2021, https://doi.org/10.5194/gmd-14-5239-2021, 2021
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The new mechanism CRI-Strat 2 features state-of-the-art isoprene chemistry not previously available in UKCA and improves UKCA's ability to reproduce observed concentrations of isoprene, monoterpenes, and OH in tropical regions. The enhanced ability to model isoprene, the most widely emitted non-methane volatile organic compound (VOC), will allow understanding of how isoprene and other biogenic VOCs affect atmospheric composition and, through biosphere–atmosphere feedbacks, climate change.
Jean-Daniel Paris, Aurélie Riandet, Efstratios Bourtsoukidis, Marc Delmotte, Antoine Berchet, Jonathan Williams, Lisa Ernle, Ivan Tadic, Hartwig Harder, and Jos Lelieveld
Atmos. Chem. Phys., 21, 12443–12462, https://doi.org/10.5194/acp-21-12443-2021, https://doi.org/10.5194/acp-21-12443-2021, 2021
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We measured atmospheric methane and CO2 by ship in the Middle East. We probe the origin of methane with a combination of light alkane measurements and modeling. We find strong influence from nearby oil and gas production over the Arabian Gulf. Comparing our data to inventories indicates that inventories overestimate sources from the upstream gas industry but underestimate emissions from oil extraction and processing. The Red Sea was under a complex mixture of sources due to human activity.
Cited articles
Aiken, J., Pradhan, Y., Barlow, R., Lavender, S., Poulton, A., Holligan, P., and
Hardman-Mountford, N.: Phytoplankton pigments and functional types in the
Atlantic Ocean: A decadal assessment, 1995–2005, Deep-Sea Res. Pt. II, 56, 899–917, https://doi.org/10.1016/j.dsr2.2008.09.017,
2009.
Andreae, M. O.: Dimethylsulfide in the water column and the sediment
porewaters of the Peru upwelling area, Limnol. Oceanogr., 30, 1208–1218,
https://doi.org/10.4319/lo.1985.30.6.1208, 1985.
Andreae, T. W., Andreae, M. O., and Schebeske, G.: Biogenic sulfur emissions
and aerosols over the tropical South Atlantic: 1. Dimethylsulfide in sea
water and in the atmospheric boundary layer, J. Geophys. Res., 99,
22819–22829, https://doi.org/10.1029/94JD01837, 1994.
Andrews, S. J., Carpenter, L. J., Apel, E. C., Atlas, E., Donets, V., Hopkins, J. R., Hornbrook, R. S., Lewis, A. C., Lidster, R. T., Lueb, R., Minaeian, J., Navarro, M., Punjabi, S., Riemer, D., and Schauffler, S.: A comparison of very short lived halocarbon (VSLS) and DMS aircraft measurements in the tropical west Pacific from CAST, ATTREX and CONTRAST, Atmos. Meas. Tech., 9, 5213–5225, https://doi.org/10.5194/amt-9-5213-2016, 2016.
Barber, R. T. and Chavez, F. P.: Biological Consequences of El Niño,
Science, 222, 1203–1210, https://doi.org/10.1126/science.222.4629.1203,
1983.
Barlow, R., Cummings, D., and Gibb, S.: Improved resolution of mono- and
divinyl chlorophylls a and b and zeaxanthin and lutein in phytoplankton
extracts using reverse phase C-8 HPLC, Mar. Ecol. Prog. Ser., 161, 303–307,
https://doi.org/10.3354/meps161303, 1997.
Bates, T. S. and Quinn, P. K.: Dimethylsulfide (DMS) in the equatorial
Pacific Ocean (1982 to 1996): Evidence of a climate feedback?, Geophys. Res.
Lett., 24, 861–864, https://doi.org/10.1029/97GL00784, 1997.
Belviso, S., Sciandra, A., and Copin-Montégut, C.: Mesoscale features of
surface water DMSP and DMS concentrations in the Atlantic Ocean off Morocco
and in the Mediterranean Sea, Deep-Sea Res. Pt. I, 50,
543–555, https://doi.org/10.1016/S0967-0637(03)00032-3, 2003.
Blomquist, B. W., Brumer, S. E., Fairall, C. W., Huebert, B. J., Zappa, C.
J., Brooks, I. M., Yang, M., Bariteau, L., Prytherch, J., Hare, J. E.,
Czerski, H., Matei, A., and Pascal, R. W.: Wind Speed and Sea State
Dependencies of Air-Sea Gas Transfer: Results From the High Wind Speed Gas
Exchange Study (HiWinGS), J. Geophys. Res.-Ocean., 122, 8034–8062,
https://doi.org/10.1002/2017JC013181, 2017.
Booge, D., Schlundt, C., Bracher, A., Endres, S., Zäncker, B., and
Marandino, C. A.: Marine isoprene production and consumption in the mixed
layer of the surface ocean – a field study over two oceanic regions,
Biogeosciences, 15, 649–667, https://doi.org/10.5194/bg-15-649-2018, 2018.
Bracher, A.: Phytoplankton pigment concentrations during RV Sonne cruise SO243, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA [data set], https://doi.org/10.1594/PANGAEA.898920, 2019.
Chan, C., Tang, J., Li, Y., and Chan, L.: Mixing ratios and sources of
halocarbons in urban, semi-urban and rural sites of the Pearl River Delta,
South China, Atmos. Environ., 40, 7331–7345,
https://doi.org/10.1016/j.atmosenv.2006.06.041, 2006.
Chavez, F. P. and Messié, M.: A comparison of Eastern Boundary Upwelling
Ecosystems, Prog. Oceanogr., 83, 80–96,
https://doi.org/10.1016/j.pocean.2009.07.032, 2009.
Codispoti, L. A. and Packard, T. T.: Denitrification rates in the eastern
tropical South Pacific, J. Mar. Res., 38, 453–477, 1980.
Crutzen, P. J., Williams, J., Pöschl, U., Hoor, P., Fischer, H.,
Warneke, C., Holzinger, R., Hansel, A., Lindinger, W., Scheeren, B., and
Lelieveld, J.: High spatial and temporal resolution measurements of primary
organics and their oxidation products over the tropical forests of Surinam,
Atmos. Environ., 34, 1161–1165,
https://doi.org/10.1016/S1352-2310(99)00482-3, 2000.
Curson, A. R. J., Todd, J. D., Sullivan, M. J., and Johnston, A. W. B.:
Catabolism of dimethylsulphoniopropionate: microorganisms, enzymes and
genes, Nat. Rev. Microbiol., 9, 849–859,
https://doi.org/10.1038/nrmicro2653, 2011.
Czeschel, R., Stramma, L., Weller, R. A., and Fischer, T.: Circulation, eddies, oxygen, and nutrient changes in the eastern tropical South Pacific Ocean, Ocean Sci., 11, 455–470, https://doi.org/10.5194/os-11-455-2015, 2015.
Dacey, J. W. H., Wakeham, S. G., and Howes, B. L.: Henry's law constants for
dimethylsulfide in freshwater and seawater, Geophys. Res. Lett., 11,
991–994, https://doi.org/10.1029/GL011i010p00991, 1984.
Dewitte, B., Vazquez-Cuervo, J., Goubanova, K., Illig, S., Takahashi, K.,
Cambon, G., Purca, S., Correa, D., Gutierrez, D., Sifeddine, A., and
Ortlieb, L.: Change in El Niño flavours over 1958–2008: Implications
for the long-term trend of the upwelling off Peru, Deep-Sea Res. Pt. II, 77–80, 143–156, https://doi.org/10.1016/j.dsr2.2012.04.011, 2012.
Dixon, J. L., Hopkins, F. E., Stephens, J. A., and Schäfer, H.: Seasonal
Changes in Microbial Dissolved Organic Sulfur Transformations in Coastal
Waters, Microorganisms 2020, 8, 337,
https://doi.org/10.3390/microorganisms8030337, 2020.
Echevin, V., Aumont, O., Ledesma, J., and Flores, G.: The seasonal cycle of
surface chlorophyll in the Peruvian upwelling system: A modelling study,
Prog. Oceanogr., 79, 167–176, https://doi.org/10.1016/j.pocean.2008.10.026,
2008.
Espinoza-Morriberón, D., Echevin, V., Colas, F., Tam, J., Ledesma, J.,
Vásquez, L., and Graco, M.: Impacts of El Niño events on the
Peruvian upwelling system productivity, J. Geophys. Res.-Ocean., 122,
5423–5444, https://doi.org/10.1002/2016JC012439, 2017.
Franklin, D. J., Poulton, A. J., Steinke, M., Young, J., Peeken, I., and
Malin, G.: Dimethylsulphide, DMSP-lyase activity and microplankton community
structure inside and outside of the Mauritanian upwelling, Prog. Oceanogr.,
83, 134–142, https://doi.org/10.1016/j.pocean.2009.07.011, 2009.
Gaul, W.: Untersuchungen zur Produktion und zum mikrobiellen Umsatz von
β-Dimethylsulphoniopropionat, Kiel,
available at: http://eldiss.uni-kiel.de/macau/receive/dissertation_diss00001320 (last access: 30 June 2021), 2004.
Graco, M. I., Purca, S., Dewitte, B., Castro, C. G., Morón, O., Ledesma,
J., Flores, G., and Gutiérrez, D.: The OMZ and nutrient features as a
signature of interannual and low-frequency variability in the Peruvian
upwelling system, Biogeosciences, 14, 4601–4617,
https://doi.org/10.5194/bg-14-4601-2017, 2017.
Hatton, A. D., Turner, S. M., Malin, G., and Liss, P. S.: Dimethylsulphoxide
and other biogenic sulphur compounds in the Galapagos Plume, Deep-Sea Res.
Pt. II, 45, 1043–1053,
https://doi.org/10.1016/S0967-0645(98)00017-4, 1998.
Hatton, A. D., Malin, G., and Liss, P. S.: Distribution of biogenic sulphur
compounds during and just after the southwest monsoon in the Arabian Sea,
Deep-Sea Res. Pt. II, 46, 617–632,
https://doi.org/10.1016/S0967-0645(98)00120-9, 1999.
Hatton, A. D., Shenoy, D. M., Hart, M. C., Mogg, A., and Green, D. H.:
Metabolism of DMSP, DMS and DMSO by the cultivable bacterial community
associated with the DMSP-producing dinoflagellate Scrippsiella trochoidea,
Biogeochemistry, 110, 131–146, https://doi.org/10.1007/s10533-012-9702-7,
2012.
Hepach, H., Quack, B., Tegtmeier, S., Engel, A., Bracher, A.,
Fuhlbrügge, S., Galgani, L., Atlas, E. L., Lampel, J., Frieß, U.,
and Krüger, K.: Biogenic halocarbons from the Peruvian upwelling region
as tropospheric halogen source, Atmos. Chem. Phys., 16, 12219–12237,
https://doi.org/10.5194/acp-16-12219-2016, 2016a.
Hepach, H., Quack, B., Tegtmeier, S., Engel, A., Bracher,
A., Fuhlbrügge, S., Galgani, L., Atlas, E. L., Lampel,
J., Frieß, U., and Krüger, K.: Pigment measured on water
bottle samples during METEOR cruise M91, PANGAEA [data set],
https://doi.org/10.1594/PANGAEA.864786, 2016b.
Herr, A. E., Kiene, R. P., Dacey, J. W. H., and Tortell, P. D.: Patterns and
drivers of dimethylsulfide concentration in the northeast subarctic Pacific
across multiple spatial and temporal scales, Biogeosciences, 16, 1729–1754,
https://doi.org/10.5194/bg-16-1729-2019, 2019.
Hind, A. J., Rauschenberg, C. D., Johnson, J. E., Yang, M., and Matrai, P.
A.: The use of algorithms to predict surface seawater dimethyl sulphide
concentrations in the SE Pacific, a region of steep gradients in primary
productivity, biomass and mixed layer depth, Biogeosciences, 8, 1–16,
https://doi.org/10.5194/bg-8-1-2011, 2011.
Howard, E. C., Henriksen, J. R., Buchan, A., Reisch, C. R., Burgmann, H.,
Welsh, R., Ye, W., Gonzalez, J. M., Mace, K., Joye, S. B., Kiene, R. P.,
Whitman, W. B., and Moran, M. A.: Bacterial Taxa That Limit Sulfur Flux from
the Ocean, Science, 314, 649–652, https://doi.org/10.1126/science.1130657,
2006.
Hsu, S. A., Meindl, E. A., and Gilhousen, D. B.: Determining the Power-Law
Wind-Profile Exponent under Near-Neutral Stability Conditions at Sea, J.
Appl. Meteorol. Climatol., 33, 757–765,
https://doi.org/10.1175/1520-0450(1994)033<0757:DTPLWP>2.0.CO;2, 1994.
Hu, Z.-Z., Kumar, A., Xue, Y., and Jha, B.: Why were some La Niñas
followed by another La Niña?, Clim. Dynam., 42, 1029–1042, https://doi.org/10.1007/s00382-013-1917-3,
2014.
Huebert, B. J., Blomquist, B. W., Hare, J. E., Fairall, C. W., Johnson, J.
E., and Bates, T. S.: Measurement of the sea-air DMS flux and transfer
velocity using eddy correlation, Geophys. Res. Lett., 31,
https://doi.org/10.1029/2004GL021567, 2004.
Jardine, K., Yañez-Serrano, A. M., Williams, J., Kunert, N., Jardine,
A., Taylor, T., Abrell, L., Artaxo, P., Guenther, A., Hewitt, C. N., House,
E., Florentino, A. P., Manzi, A., Higuchi, N., Kesselmeier, J., Behrendt,
T., Veres, P. R., Derstroff, B., Fuentes, J. D., Martin, S. T., and Andreae,
M. O.: Dimethyl sulfide in the Amazon rain forest: DMS in the Amazon, Global
Biogeochem. Cy., 29, 19–32, https://doi.org/10.1002/2014GB004969, 2015.
Keller, M. D.: Dimethyl sulfide production and marine phytoplankton: the
importance of species composition and cell size, Biol. Oceanogr., 6, 375–382,
1989.
Keller, M. D. and Korjeff-Bellows, W.: Physiological aspects of the
production of dimethylsulfoniopropionate (DMSP) by marine phytoplankton, in:
Biological
and Environmental Chemistry of DMSP and Related Sulfonium Compounds, edited by: Kiene, R. P., Visscher, P. T., Keller, M. D., and Kirst, G. O., Plenum
Press, New York, 131–142, https://doi.org/10.1007/978-1-4613-0377-0_12, 1996.
Keller, M. D., Kiene, R. P., Matrai, P. A., and Bellows, W. K.: Production
of glycine betaine and dimethylsulfoniopropionate in marine phytoplankton,
I. Batch cultures, Mar. Biol., 135, 237–248,
https://doi.org/10.1007/s002270050621, 1999a.
Keller, M. D., Kiene, R. P., Matrai, P. A., and Bellows, W. K.: Production
of glycine betaine and dimethylsulfoniopropionate in marine phytoplankton,
II. N-limited chemostat cultures, Mar. Biol., 135, 249–257,
https://doi.org/10.1007/s002270050622, 1999b.
Lana, A., Bell, T. G., Simó, R., Vallina, S. M., Ballabrera-Poy, J.,
Kettle, A. J., Dachs, J., Bopp, L., Saltzman, E. S., Stefels, J., Johnson,
J. E., and Liss, P. S.: An updated climatology of surface dimethlysulfide
concentrations and emission fluxes in the global ocean, Global Biogeochem.
Cy., 25, https://doi.org/10.1029/2010GB003850, 2011.
Leck, C., Larsson, U., Bågander, L. E., Johansson, S., and Hajdu, S.:
Dimethyl sulfide in the Baltic Sea: Annual variability in relation to
biological activity, J. Geophys. Res.-Ocean., 95, 3353,
https://doi.org/10.1029/JC095iC03p03353, 1990.
Lee, G., Park, J., Jang, Y., Lee, M., Kim, K.-R., Oh, J.-R., Kim, D., Yi,
H.-I., and Kim, T.-Y.: Vertical variability of seawater DMS in the South
Pacific Ocean and its implication for atmospheric and surface seawater DMS,
Chemosphere, 78, 1063–1070, https://doi.org/10.1016/j.chemosphere.2009.10.054, 2010.
Lee, P. A., de Mora, S. J., and Levasseur, M.: A review of dimethylsulfoxide
in aquatic environments, Atmos.-Ocean, 37, 439–456,
https://doi.org/10.1080/07055900.1999.9649635, 1999.
Lennartz, S. T., Krysztofiak, G., Marandino, C. A., Sinnhuber, B.-M.,
Tegtmeier, S., Ziska, F., Hossaini, R., Krüger, K., Montzka, S. A.,
Atlas, E., Oram, D. E., Keber, T., Bönisch, H., and Quack, B.: Modelling
marine emissions and atmospheric distributions of halocarbons and dimethyl
sulfide: the influence of prescribed water concentration vs. prescribed
emissions, Atmos. Chem. Phys., 15, 11753–11772,
https://doi.org/10.5194/acp-15-11753-2015, 2015.
Marandino, C. A., De Bruyn, W. J., Miller, S. D., and Saltzman, E. S.: Open
ocean DMS air/sea fluxes over the eastern South Pacific Ocean, Atmos. Chem.
Phys., 9, 345–356, https://doi.org/10.5194/acp-9-345-2009, 2009.
Meinardi, S.: Dimethyl disulfide (DMDS) and dimethyl sulfide (DMS) emissions
from biomass burning in Australia, Geophys. Res. Lett., 30, 1454,
https://doi.org/10.1029/2003GL016967, 2003.
Moran, M. A., Reisch, C. R., Kiene, R. P., and Whitman, W. B.: Genomic
Insights into Bacterial DMSP Transformations, Annu. Rev. Mar. Sci., 4,
523–542, https://doi.org/10.1146/annurev-marine-120710-100827, 2012.
Nightingale, P. D., Malin, G., Law, C. S., Watson, A. J., Liss, P. S.,
Liddicoat, M. I., Boutin, J., and Upstill-Goddard, R. C.: In situ evaluation
of air-sea gas exchange parameterizations using novel conservative and
volatile tracers, Global Biogeochem. Cy., 14, 373–387,
https://doi.org/10.1029/1999gb900091, 2000.
Omori, Y., Tanimoto, H., Inomata, S., Ikeda, K., Iwata, T., Kameyama, S.,
Uematsu, M., Gamo, T., Ogawa, H., and Furuya, K.: Sea-to-air flux of
dimethyl sulfide in the South and North Pacific Ocean as measured by proton
transfer reaction-mass spectrometry coupled with the gradient flux
technique: DMS Flux Measured by PTR-MS/GF Technique, J. Geophys. Res.-Atmos., 122, 7216–7231, https://doi.org/10.1002/2017JD026527, 2017.
Quinn, P. K. and Bates, T. S.: The case against climate regulation via
oceanic phytoplankton sulphur emissions, Nature, 480, 51–56,
https://doi.org/10.1038/nature10580, 2011.
Riseman, S. F. and DiTullio, G. R.: Particulate dimethylsulfoniopropionate
and dimethylsulfoxide in relation to iron availability and algal community
structure in the Peru Upwelling System, Can. J. Fish. Aquat. Sci., 61, 721–735,
https://doi.org/10.1139/f04-052, 2004.
Saltzman, E. S., King, D. B., Holmen, K., and Leck, C.: Experimental
determination of the diffusion coefficient of dimethylsulfide in water, J.
Geophys. Res.-Ocean., 98, 16481, https://doi.org/10.1029/93JC01858, 1993.
Santoso, A., Mcphaden, M. J., and Cai, W.: The Defining Characteristics of
ENSO Extremes and the Strong 2015/2016 El Niño: ENSO Extremes, Rev.
Geophys., 55, 1079–1129, https://doi.org/10.1002/2017RG000560, 2017.
Shenoy, D. M. and Kumar, M. D.: Variability in abundance and fluxes of
dimethyl sulphide in the Indian Ocean, Biogeochemistry, 83, 277–292,
https://doi.org/10.1007/s10533-007-9092-4, 2007.
Simó, R., Hatton, A., Malin, G., and Liss, P.: Particulate dimethyl
sulphoxide in seawater:production by microplankton, Mar. Ecol. Prog. Ser.,
167, 291–296, https://doi.org/10.3354/meps167291, 1998.
Simó, R., Archer, S. D., Pedrós-Alió, C., Gilpin, L., and
Stelfox-Widdicombe, C. E.: Coupled dynamics of dimethylsulfoniopropionate
and dimethylsulfide cycling and the microbial food web in surface waters of
the North Atlantic, Limnol. Oceanogr., 47, 53–61,
https://doi.org/10.4319/lo.2002.47.1.0053, 2002.
Stefels, J., Steinke, M., Turner, S., Malin, G., and Belviso, S.:
Environmental constraints on the production and removal of the climatically
active gas dimethylsulphide (DMS) and implications for ecosystem modelling,
Biogeochemistry, 83, 245–275, https://doi.org/10.1007/s10533-007-9091-5,
2007.
Stramma, L., Fischer, T., Grundle, D., Krahmann, G., Bange, H. W., and
Marandino, C.: Observed El Niño conditions in the eastern tropical
Pacific in October 2015, Ocean Sci., 12, 861–873,
https://doi.org/10.5194/os-12-861-2016, 2016.
Sunda, W., Kieber, D. J., Kiene, R. P., and Huntsman, S.: An antioxidant
function for DMSP and DMS in marine algae, Nature, 418, 317–320,
https://doi.org/10.1038/nature00851, 2002.
Sunda, W., Hardison, R., Kiene, R. P., Bucciarelli, E., and Harada, H.: The
effect of nitrogen limitation on cellular DMSP and DMS release in marine
phytoplankton: climate feedback implications, Aquat. Sci., 69, 341–351,
https://doi.org/10.1007/s00027-007-0887-0, 2007.
Tarazona, J. and Arntz, W.: The Peruvian Coastal Upwelling System, in:
Coastal Marine Ecosystems of Latin America, edited by: Seeliger,
U. and Kjerfve, B., Springer Berlin Heidelberg, Berlin, Heidelberg, Vol. 144,
229–244, https://doi.org/10.1007/978-3-662-04482-7_17, 2001.
Taylor, B. B., Torrecilla, E., Bernhardt, A., Taylor, M. H., Peeken, I.,
Röttgers, R., Piera, J., and Bracher, A.: Bio-optical provinces in the
eastern Atlantic Ocean and their biogeographical relevance, Biogeosciences,
8, 3609–3629, https://doi.org/10.5194/bg-8-3609-2011, 2011.
Theseira, A. M., Nielsen, D. A., and Petrou, K.: Uptake of
dimethylsulphoniopropionate (DMSP) reduces free reactive oxygen species
(ROS) during late exponential growth in the diatom Thalassiosira weissflogii
grown under three salinities, Mar. Biol., 167, 1–7, https://doi.org/10.1007/s00227-020-03744-4,
2020.
Timmermann, A., An, S.-I., Kug, J.-S., Jin, F.-F., Cai, W., Capotondi, A.,
Cobb, K. M., Lengaigne, M., McPhaden, M. J., Stuecker, M. F., Stein, K.,
Wittenberg, A. T., Yun, K.-S., Bayr, T., Chen, H.-C., Chikamoto, Y.,
Dewitte, B., Dommenget, D., Grothe, P., Guilyardi, E., Ham, Y.-G., Hayashi,
M., Ineson, S., Kang, D., Kim, S., Kim, W., Lee, J.-Y., Li, T., Luo, J.-J.,
McGregor, S., Planton, Y., Power, S., Rashid, H., Ren, H.-L., Santoso, A.,
Takahashi, K., Todd, A., Wang, G., Wang, G., Xie, R., Yang, W.-H., Yeh,
S.-W., Yoon, J., Zeller, E., and Zhang, X.: El Niño–Southern
Oscillation complexity, Nature, 559, 535–545,
https://doi.org/10.1038/s41586-018-0252-6, 2018.
Turner, S. M., Nightingale, P. D., Spokes, L. J., Liddicoat, M. I., and
Liss, P. S.: Increased dimethyl sulphide concentrations in sea water from in
situ iron enrichment, Nature, 383, 513–517,
https://doi.org/10.1038/383513a0, 1996.
Uitz, J., Claustre, H., Morel, A., and Hooker, S. B.: Vertical distribution
of phytoplankton communities in open ocean: An assessment based on surface
chlorophyll, J. Geophys. Res.-Ocean., 111, C08005,
https://doi.org/10.1029/2005JC003207, 2006.
Vidussi, F., Claustre, H., Manca, B. B., Luchetta, A., and Marty, J.-C.:
Phytoplankton pigment distribution in relation to upper thermocline
circulation in the eastern Mediterranean Sea during winter, J. Geophys. Res.-Ocean., 106, 19939–19956, https://doi.org/10.1029/1999jc000308, 2001.
Xu, F., Yan, S., Zhang, H., Wu, Y., Ma, Q., Song, Y., Zhuang, G., and Yang,
G.: Occurrence and cycle of dimethyl sulfide in the western Pacific Ocean,
Limnol. Oceanogr., 66, 2868–2884, https://doi.org/10.1002/lno.11797, 2021.
Yang, M., Huebert, B. J., Blomquist, B. W., Howell, S. G., Shank, L. M.,
McNaughton, C. S., Clarke, A. D., Hawkins, L. N., Russell, L. M., Covert, D.
S., Coffman, D. J., Bates, T. S., Quinn, P. K., Zagorac, N., Bandy, A. R.,
de Szoeke, S. P., Zuidema, P. D., Tucker, S. C., Brewer, W. A., Benedict, K.
B., and Collett, J. L.: Atmospheric sulfur cycling in the southeastern
Pacific – longitudinal distribution, vertical profile, and diel variability
observed during VOCALS-REx, Atmos. Chem. Phys., 11, 5079–5097,
https://doi.org/10.5194/acp-11-5079-2011, 2011.
Zavarsky, A., Goddijn-Murphy, L., Steinhoff, T., and Marandino, C. A.:
Bubble-Mediated Gas Transfer and Gas Transfer Suppression of DMS and CO2, J.
Geophys. Res.-Atmos., 123, 6624–6647, https://doi.org/10.1029/2017JD028071,
2018.
Zhao, Y., Schlundt, C., Booge, D., and Bange, H. W.: A decade of dimethyl sulfide (DMS), dimethylsulfoniopropionate (DMSP) and dimethyl sulfoxide (DMSO) measurements in the southwestern Baltic Sea, Biogeosciences, 18, 2161–2179, https://doi.org/10.5194/bg-18-2161-2021, 2021.
Zindler, C., Peeken, I., Marandino, C. A., and Bange, H. W.: Environmental
control on the variability of DMS and DMSP in the Mauritanian upwelling
region, Biogeosciences, 9, 1041–1051,
https://doi.org/10.5194/bg-9-1041-2012, 2012.
Zindler, C., Bracher, A., Marandino, C. A., Taylor, B., Torrecilla, E.,
Kock, A., and Bange, H. W.: Sulphur compounds, methane, and phytoplankton:
interactions along a north–south transit in the western Pacific Ocean,
Biogeosciences, 10, 3297–3311, https://doi.org/10.5194/bg-10-3297-2013,
2013.
Short summary
We present here, for the first time, simultaneously measured dimethylsulfide (DMS) seawater concentrations and DMS atmospheric mole fractions from the Peruvian upwelling region during two cruises in December 2012 and October 2015. Our results indicate low oceanic DMS concentrations and atmospheric DMS molar fractions in surface waters and the atmosphere, respectively. In addition, the Peruvian upwelling region was identified as an insignificant source of DMS emissions during both periods.
We present here, for the first time, simultaneously measured dimethylsulfide (DMS) seawater...
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