Detecting regional patterns of changing CO 2 flux in Alaska
With rapid changes in climate and the seasonal amplitude of carbon dioxide (CO 2 ) in the Arctic, it is critical that we detect and quantify the underlying processes controlling the changing amplitude of CO 2 to better predict carbon cycle feedbacks in the Arctic climate system. We use satellite and...
Published in: | Proceedings of the National Academy of Sciences |
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Online Access: | http://www.osti.gov/servlets/purl/1379513 https://www.osti.gov/biblio/1379513 https://doi.org/10.1073/pnas.1601085113 |
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ftosti:oai:osti.gov:1379513 2023-07-30T04:01:31+02:00 Detecting regional patterns of changing CO 2 flux in Alaska Parazoo, Nicholas C. Commane, Roisin Wofsy, Steven C. Koven, Charles D. Sweeney, Colm Lawrence, David M. Lindaas, Jakob Chang, Rachel Y. -W. Miller, Charles E. 2023-06-26 application/pdf http://www.osti.gov/servlets/purl/1379513 https://www.osti.gov/biblio/1379513 https://doi.org/10.1073/pnas.1601085113 unknown http://www.osti.gov/servlets/purl/1379513 https://www.osti.gov/biblio/1379513 https://doi.org/10.1073/pnas.1601085113 doi:10.1073/pnas.1601085113 54 ENVIRONMENTAL SCIENCES 2023 ftosti https://doi.org/10.1073/pnas.1601085113 2023-07-11T09:20:47Z With rapid changes in climate and the seasonal amplitude of carbon dioxide (CO 2 ) in the Arctic, it is critical that we detect and quantify the underlying processes controlling the changing amplitude of CO 2 to better predict carbon cycle feedbacks in the Arctic climate system. We use satellite and airborne observations of atmospheric CO 2 with climatically forced CO 2 flux simulations to assess the detectability of Alaskan carbon cycle signals as future warming evolves. We find that current satellite remote sensing technologies can detect changing uptake accurately during the growing season but lack sufficient cold season coverage and near-surface sensitivity to constrain annual carbon balance changes at regional scale. Airborne strategies that target regular vertical profile measurements within continental interiors are more sensitive to regional flux deeper into the cold season but currently lack sufficient spatial coverage throughout the entire cold season. Thus, the current CO 2 observing network is unlikely to detect potentially large CO 2 sources associated with deep permafrost thaw and cold season respiration expected over the next 50 y. In conclusion, although continuity of current observations is vital, strategies and technologies focused on cold season measurements (active remote sensing, aircraft, and tall towers) and systematic sampling of vertical profiles across continental interiors over the full annual cycle are required to detect the onset of carbon release from thawing permafrost. Other/Unknown Material Arctic permafrost Alaska SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Arctic Proceedings of the National Academy of Sciences 113 28 7733 7738 |
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Open Polar |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
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54 ENVIRONMENTAL SCIENCES Parazoo, Nicholas C. Commane, Roisin Wofsy, Steven C. Koven, Charles D. Sweeney, Colm Lawrence, David M. Lindaas, Jakob Chang, Rachel Y. -W. Miller, Charles E. Detecting regional patterns of changing CO 2 flux in Alaska |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
With rapid changes in climate and the seasonal amplitude of carbon dioxide (CO 2 ) in the Arctic, it is critical that we detect and quantify the underlying processes controlling the changing amplitude of CO 2 to better predict carbon cycle feedbacks in the Arctic climate system. We use satellite and airborne observations of atmospheric CO 2 with climatically forced CO 2 flux simulations to assess the detectability of Alaskan carbon cycle signals as future warming evolves. We find that current satellite remote sensing technologies can detect changing uptake accurately during the growing season but lack sufficient cold season coverage and near-surface sensitivity to constrain annual carbon balance changes at regional scale. Airborne strategies that target regular vertical profile measurements within continental interiors are more sensitive to regional flux deeper into the cold season but currently lack sufficient spatial coverage throughout the entire cold season. Thus, the current CO 2 observing network is unlikely to detect potentially large CO 2 sources associated with deep permafrost thaw and cold season respiration expected over the next 50 y. In conclusion, although continuity of current observations is vital, strategies and technologies focused on cold season measurements (active remote sensing, aircraft, and tall towers) and systematic sampling of vertical profiles across continental interiors over the full annual cycle are required to detect the onset of carbon release from thawing permafrost. |
author |
Parazoo, Nicholas C. Commane, Roisin Wofsy, Steven C. Koven, Charles D. Sweeney, Colm Lawrence, David M. Lindaas, Jakob Chang, Rachel Y. -W. Miller, Charles E. |
author_facet |
Parazoo, Nicholas C. Commane, Roisin Wofsy, Steven C. Koven, Charles D. Sweeney, Colm Lawrence, David M. Lindaas, Jakob Chang, Rachel Y. -W. Miller, Charles E. |
author_sort |
Parazoo, Nicholas C. |
title |
Detecting regional patterns of changing CO 2 flux in Alaska |
title_short |
Detecting regional patterns of changing CO 2 flux in Alaska |
title_full |
Detecting regional patterns of changing CO 2 flux in Alaska |
title_fullStr |
Detecting regional patterns of changing CO 2 flux in Alaska |
title_full_unstemmed |
Detecting regional patterns of changing CO 2 flux in Alaska |
title_sort |
detecting regional patterns of changing co 2 flux in alaska |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1379513 https://www.osti.gov/biblio/1379513 https://doi.org/10.1073/pnas.1601085113 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost Alaska |
genre_facet |
Arctic permafrost Alaska |
op_relation |
http://www.osti.gov/servlets/purl/1379513 https://www.osti.gov/biblio/1379513 https://doi.org/10.1073/pnas.1601085113 doi:10.1073/pnas.1601085113 |
op_doi |
https://doi.org/10.1073/pnas.1601085113 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
113 |
container_issue |
28 |
container_start_page |
7733 |
op_container_end_page |
7738 |
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1772812287782944768 |