Summer surface CO2 dynamics on the Bering Sea and eastern Chukchi Sea shelves from 1989 to 2019
Author Posting. © American Geophysical Union, 2022. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 127(1), (2022): e2021JC017424, https://doi.org/10.1029...
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Online Access: | https://hdl.handle.net/1912/28957 |
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/28957 2023-05-15T15:03:42+02:00 Summer surface CO2 dynamics on the Bering Sea and eastern Chukchi Sea shelves from 1989 to 2019 Wang, Hongjie Lin, Peigen Pickart, Robert S. Cross, Jessica N. 2021-12-17 https://hdl.handle.net/1912/28957 unknown American Geophysical Union https://doi.org/10.1029/2021JC017424 Wang, H., Lin, P., Pickart, R. S., & Cross, J. N. (2022). Summer surface CO2 dynamics on the Bering Sea and eastern Chukchi Sea shelves from 1989 to 2019. Journal of Geophysical Research: Oceans, 127(1), e2021JC017424. https://hdl.handle.net/1912/28957 doi:10.1029/2021JC017424 Wang, H., Lin, P., Pickart, R. S., & Cross, J. N. (2022). Summer surface CO2 dynamics on the Bering Sea and eastern Chukchi Sea shelves from 1989 to 2019. Journal of Geophysical Research: Oceans, 127(1), e2021JC017424. doi:10.1029/2021JC017424 Pacific Arctic region Sea-air CO2 flux Ocean acidification Climate change Sea-ice loss Surface ocean CO2 Atlas Article 2021 ftwhoas https://doi.org/10.1029/2021JC017424 2022-10-29T22:57:31Z Author Posting. © American Geophysical Union, 2022. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 127(1), (2022): e2021JC017424, https://doi.org/10.1029/2021JC017424. By compiling boreal summer (June to October) CO2 measurements from 1989 to 2019 on the Bering and eastern Chukchi Sea shelves, we find that the study areas act as a CO2 sink except when impacted by river runoff and wind-driven upwelling. The CO2 system in this area is seasonally dominated by the biological pump especially in the northern Bering Sea and near Hanna Shoal, while wind-driven upwelling of CO2-rich bottom water can cause episodic outgassing. Seasonal surface ΔfCO2 (oceanic fCO2 – air fCO2) is dominantly driven by temperature only during periods of weak CO2 outgassing in shallow nearshore areas. However, after comparing the mean summer ΔfCO2 during the periods of 1989–2013 and 2014–2019, we suggest that temperature does drive long-term, multi-decadal patterns in ΔfCO2. In the northern Chukchi Sea, rapid warming concurrent with reduced seasonal sea-ice persistence caused the regional summer CO2 sink to decrease. By contrast, increasing primary productivity caused the regional summer CO2 sink on the Bering Sea shelf to increase over time. While additional time series are needed to confirm the seasonal and annual trajectory of CO2 changes and ocean acidification in these dynamic and spatially complex ecosystems, this study provides a meaningful mechanistic analysis of recent changes in inorganic carbonate chemistry. As high-resolution time series of inorganic carbonate parameters lengthen and short-term variations are better constrained in the coming decades, we will have stronger confidence in assessing the mechanisms contributing to long-term changes in the source/sink status of regional sub-Arctic seas. We gratefully acknowledge the support of the funding agencies that supported this ... Article in Journal/Newspaper Arctic Bering Sea Chukchi Chukchi Sea Climate change Ocean acidification Pacific Arctic Sea ice Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Arctic Bering Sea Chukchi Sea Hanna Shoal ENVELOPE(-162.000,-162.000,72.000,72.000) Pacific Journal of Geophysical Research: Oceans 127 1 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
unknown |
topic |
Pacific Arctic region Sea-air CO2 flux Ocean acidification Climate change Sea-ice loss Surface ocean CO2 Atlas |
spellingShingle |
Pacific Arctic region Sea-air CO2 flux Ocean acidification Climate change Sea-ice loss Surface ocean CO2 Atlas Wang, Hongjie Lin, Peigen Pickart, Robert S. Cross, Jessica N. Summer surface CO2 dynamics on the Bering Sea and eastern Chukchi Sea shelves from 1989 to 2019 |
topic_facet |
Pacific Arctic region Sea-air CO2 flux Ocean acidification Climate change Sea-ice loss Surface ocean CO2 Atlas |
description |
Author Posting. © American Geophysical Union, 2022. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 127(1), (2022): e2021JC017424, https://doi.org/10.1029/2021JC017424. By compiling boreal summer (June to October) CO2 measurements from 1989 to 2019 on the Bering and eastern Chukchi Sea shelves, we find that the study areas act as a CO2 sink except when impacted by river runoff and wind-driven upwelling. The CO2 system in this area is seasonally dominated by the biological pump especially in the northern Bering Sea and near Hanna Shoal, while wind-driven upwelling of CO2-rich bottom water can cause episodic outgassing. Seasonal surface ΔfCO2 (oceanic fCO2 – air fCO2) is dominantly driven by temperature only during periods of weak CO2 outgassing in shallow nearshore areas. However, after comparing the mean summer ΔfCO2 during the periods of 1989–2013 and 2014–2019, we suggest that temperature does drive long-term, multi-decadal patterns in ΔfCO2. In the northern Chukchi Sea, rapid warming concurrent with reduced seasonal sea-ice persistence caused the regional summer CO2 sink to decrease. By contrast, increasing primary productivity caused the regional summer CO2 sink on the Bering Sea shelf to increase over time. While additional time series are needed to confirm the seasonal and annual trajectory of CO2 changes and ocean acidification in these dynamic and spatially complex ecosystems, this study provides a meaningful mechanistic analysis of recent changes in inorganic carbonate chemistry. As high-resolution time series of inorganic carbonate parameters lengthen and short-term variations are better constrained in the coming decades, we will have stronger confidence in assessing the mechanisms contributing to long-term changes in the source/sink status of regional sub-Arctic seas. We gratefully acknowledge the support of the funding agencies that supported this ... |
format |
Article in Journal/Newspaper |
author |
Wang, Hongjie Lin, Peigen Pickart, Robert S. Cross, Jessica N. |
author_facet |
Wang, Hongjie Lin, Peigen Pickart, Robert S. Cross, Jessica N. |
author_sort |
Wang, Hongjie |
title |
Summer surface CO2 dynamics on the Bering Sea and eastern Chukchi Sea shelves from 1989 to 2019 |
title_short |
Summer surface CO2 dynamics on the Bering Sea and eastern Chukchi Sea shelves from 1989 to 2019 |
title_full |
Summer surface CO2 dynamics on the Bering Sea and eastern Chukchi Sea shelves from 1989 to 2019 |
title_fullStr |
Summer surface CO2 dynamics on the Bering Sea and eastern Chukchi Sea shelves from 1989 to 2019 |
title_full_unstemmed |
Summer surface CO2 dynamics on the Bering Sea and eastern Chukchi Sea shelves from 1989 to 2019 |
title_sort |
summer surface co2 dynamics on the bering sea and eastern chukchi sea shelves from 1989 to 2019 |
publisher |
American Geophysical Union |
publishDate |
2021 |
url |
https://hdl.handle.net/1912/28957 |
long_lat |
ENVELOPE(-162.000,-162.000,72.000,72.000) |
geographic |
Arctic Bering Sea Chukchi Sea Hanna Shoal Pacific |
geographic_facet |
Arctic Bering Sea Chukchi Sea Hanna Shoal Pacific |
genre |
Arctic Bering Sea Chukchi Chukchi Sea Climate change Ocean acidification Pacific Arctic Sea ice |
genre_facet |
Arctic Bering Sea Chukchi Chukchi Sea Climate change Ocean acidification Pacific Arctic Sea ice |
op_source |
Wang, H., Lin, P., Pickart, R. S., & Cross, J. N. (2022). Summer surface CO2 dynamics on the Bering Sea and eastern Chukchi Sea shelves from 1989 to 2019. Journal of Geophysical Research: Oceans, 127(1), e2021JC017424. doi:10.1029/2021JC017424 |
op_relation |
https://doi.org/10.1029/2021JC017424 Wang, H., Lin, P., Pickart, R. S., & Cross, J. N. (2022). Summer surface CO2 dynamics on the Bering Sea and eastern Chukchi Sea shelves from 1989 to 2019. Journal of Geophysical Research: Oceans, 127(1), e2021JC017424. https://hdl.handle.net/1912/28957 doi:10.1029/2021JC017424 |
op_doi |
https://doi.org/10.1029/2021JC017424 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
127 |
container_issue |
1 |
_version_ |
1766335565019480064 |