Biogeosciences
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Articles | Volume 19, issue 24
Articles | Volume 19, issue 24
https://doi.org/10.5194/bg-19-5953-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-19-5953-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 24
Research article
 | Highlight paper
 | 
22 Dec 2022
Research article | Highlight paper |  | 22 Dec 2022

Using atmospheric observations to quantify annual biogenic carbon dioxide fluxes on the Alaska North Slope

Luke D. Schiferl, Jennifer D. Watts, Erik J. L. Larson, Kyle A. Arndt, Sébastien C. Biraud, Eugénie S. Euskirchen, Jordan P. Goodrich, John M. Henderson, Aram Kalhori, Kathryn McKain, Marikate E. Mountain, J. William Munger, Walter C. Oechel, Colm Sweeney, Yonghong Yi, Donatella Zona, and Róisín Commane

Supplement

https://doi.org/10.5194/bg-19-5953-2022-supplement

Data sets

ABoVE: TVPRM Simulated Net Ecosystem Exchange, Alaskan North Slope, 2008-2017 L. Schiferl and R. Commane https://doi.org/10.3334/ORNLDAAC/1920

Arctic Observatory Network (AON) Data E. S. Euskirchen and C. Edgar http://aon.iab.uaf.edu/data

Greenhouse gas flux measurements at the zero curtain, North Slope, Alaska, 2012-2019 D. Zona https://doi.org/10.18739/A2X34MS1B

Atmospheric Carbon Dioxide Dry Air Mole Fractions from quasi-continuous measurements at Barrow, Alaska, 1973-2017 K. W. Thoning et al. https://gml.noaa.gov/aftp/data/barrow/co2/in-situ/

Campaign datasets for ARM Airborne Carbon Measurements (ARM-ACME-V) S. Biraud et al. https://www.arm.gov/research/campaigns/aaf2015armacmev

ABoVE: Atmospheric Profiles of CO, CO2 and CH4Concentrations from Arctic-CAP, 2017 C. Sweeney and K. McKain https://doi.org/10.3334/ORNLDAAC/1658

NCEP North American Regional Reanalysis (NARR) data provided by the NOAA PSL NOAA PSL https://psl.noaa.gov/data/gridded/data.narr.html

Complete ERA5 from 1979: Fifth generation of ECMWF atmospheric reanalyses of the global climate H Hersbach et al. https://www.ecmwf.int/en/forecasts/dataset/ecmwf-reanalysis-v5

L2 Daily Solar-Induced Fluorescence (SIF) from MetOp-A GOME-2, 2007-2018 J. Joiner et al. https://doi.org/10.3334/ORNLDAAC/2083

GOSIF - Global, OCO-2 based SIF product X. Li and J. Xiao https://globalecology.unh.edu/data/GOSIF.html

CSIF Y. Zhang https://doi.org/10.6084/m9.figshare.6387494

Circumpolar Arctic Vegetation Map CAVM Team https://www.geobotany.uaf.edu/cavm/data/

Raster Circumpolar Arctic Vegetation Map M. Raynolds and D. Walker https://doi.org/10.17632/c4xj5rv6kv.1

ABoVE: Landsat-derived Annual Dominant Land Cover Across ABoVE Core Domain, 1984-2014 J. A. Wang et al. https://doi.org/10.3334/ORNLDAAC/1691

CARVE: L4 Gridded Footprints from WRF-STILT model, 2012-2016 J. Henderson et al. https://doi.org/10.3334/ORNLDAAC/1431

ABoVE: Level-4 WRF-STILT Footprint Files for Circumpolar Receptors, 2016-2019 J. Henderson et al. https://doi.org/10.3334/ORNLDAAC/1896

ABoVE: Level-4 WRF-STILT Particle Trajectories for Circumpolar Receptors, 2016-2019 J. Henderson et al. https://doi.org/10.3334/ORNLDAAC/1895

CARVE: L4 Gridded Particle Trajectories for WRF-STILT model, 2012-2016 CARVE Science Team https://doi.org/10.3334/ORNLDAAC/1430

CARVE Modeled Gross Ecosystem CO2 Exchange and Respiration, Alaska, 2012-2014 K. A. Luus and J. C. Lin https://doi.org/10.3334/ORNLDAAC/1314

CARVE: Net Ecosystem CO2 Exchange and Regional Carbon Budgets for Alaska, 2012-2014 R. Commane et al. https://doi.org/10.3334/ORNLDAAC/1389

Gridded Winter Soil CO2 Flux Estimates for pan-Arctic and Boreal Regions, 2003-2100 J. D. Watts et al. https://doi.org/10.3334/ORNLDAAC/1683

Soil Respiration Maps for the ABoVE Domain, 2016-2017 J. D. Watts et al. https://doi.org/10.3334/ORNLDAAC/1935

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Co-editor-in-chief
Schiferl and colleagues combine top-down and bottom-up estimates of carbon dioxide emissions from the North Slope of Alaska to find that CO2 efflux from terrestrial and aquatic ecosystems during the early cold season (September – December) are critical for explaining its carbon balance. Fluxes during the late cold season (January through April) were muted in comparison. Despite the importance of cold-season efflux, growing season CO2 uptake and release processes dominated its interannual variability. This study helps clarify how the carbon cycle of complex tundra ecosystems across large Arctic regions respond to ongoing climate changes.
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Short summary
As the Arctic rapidly warms, vast stores of thawing permafrost could release carbon dioxide (CO2) into the atmosphere. We combined observations of atmospheric CO2 concentrations from aircraft and a tower with observed CO2 fluxes from tundra ecosystems and found that the Alaskan North Slope in not a consistent source nor sink of CO2. Our study shows the importance of using both site-level and atmospheric measurements to constrain regional net CO2 fluxes and improve biogenic processes in models.
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