Mechanistic Drivers of Reemergence of Anthropogenic Carbon in the Equatorial Pacific
AbstractRelatively rapid reemergence of anthropogenic carbon (Cant) in the Equatorial Pacific is of potential importance for its impact on the carbonate buffering capacity of surface seawater and thereby impeding the ocean's ability to further absorb Cant from the atmosphere. We explore the mec...
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ftopenaccessrep:oai:zenodo.org:77297 2023-10-25T01:43:33+02:00 Mechanistic Drivers of Reemergence of Anthropogenic Carbon in the Equatorial Pacific Daniele Iudicone Richard D. Slater Laure Resplandy Keith B. Rodgers Jorge L. Sarmiento Stephen M. Griffies Ping Zhai 2017-09-22 https://www.openaccessrepository.it/record/77297 https://doi.org/10.1002/2017gl073758 eng eng url:https://www.openaccessrepository.it/communities/itmirror https://www.openaccessrepository.it/record/77297 doi:10.1002/2017gl073758 info:eu-repo/semantics/openAccess European Marine Science NEANIAS Atmospheric Research Community Knowmad Institut General Earth and Planetary Sciences Geophysics info:eu-repo/semantics/article publication-article 2017 ftopenaccessrep https://doi.org/10.1002/2017gl073758 2023-09-26T22:18:55Z AbstractRelatively rapid reemergence of anthropogenic carbon (Cant) in the Equatorial Pacific is of potential importance for its impact on the carbonate buffering capacity of surface seawater and thereby impeding the ocean's ability to further absorb Cant from the atmosphere. We explore the mechanisms sustaining Cant reemergence (upwelling) from the thermocline to surface layers by applying water mass transformation diagnostics to a global ocean/sea ice/biogeochemistry model. We find that the upwelling rate of Cant (0.4 PgC yr−1) from the thermocline to the surface layer is almost twice as large as air‐sea Cant fluxes (0.203 PgC yr−1). The upwelling of Cant from the thermocline to the surface layer can be understood as a two‐step process: The first being due to diapycnal diffusive transformation fluxes and the second due to surface buoyancy fluxes. We also find that this reemergence of Cant decreases dramatically during the 1982/1983 and 1997/1998 El Niño events. Article in Journal/Newspaper Sea ice Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository Pacific Geophysical Research Letters 44 18 9433 9439 |
institution |
Open Polar |
collection |
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository |
op_collection_id |
ftopenaccessrep |
language |
English |
topic |
European Marine Science NEANIAS Atmospheric Research Community Knowmad Institut General Earth and Planetary Sciences Geophysics |
spellingShingle |
European Marine Science NEANIAS Atmospheric Research Community Knowmad Institut General Earth and Planetary Sciences Geophysics Daniele Iudicone Richard D. Slater Laure Resplandy Keith B. Rodgers Jorge L. Sarmiento Stephen M. Griffies Ping Zhai Mechanistic Drivers of Reemergence of Anthropogenic Carbon in the Equatorial Pacific |
topic_facet |
European Marine Science NEANIAS Atmospheric Research Community Knowmad Institut General Earth and Planetary Sciences Geophysics |
description |
AbstractRelatively rapid reemergence of anthropogenic carbon (Cant) in the Equatorial Pacific is of potential importance for its impact on the carbonate buffering capacity of surface seawater and thereby impeding the ocean's ability to further absorb Cant from the atmosphere. We explore the mechanisms sustaining Cant reemergence (upwelling) from the thermocline to surface layers by applying water mass transformation diagnostics to a global ocean/sea ice/biogeochemistry model. We find that the upwelling rate of Cant (0.4 PgC yr−1) from the thermocline to the surface layer is almost twice as large as air‐sea Cant fluxes (0.203 PgC yr−1). The upwelling of Cant from the thermocline to the surface layer can be understood as a two‐step process: The first being due to diapycnal diffusive transformation fluxes and the second due to surface buoyancy fluxes. We also find that this reemergence of Cant decreases dramatically during the 1982/1983 and 1997/1998 El Niño events. |
format |
Article in Journal/Newspaper |
author |
Daniele Iudicone Richard D. Slater Laure Resplandy Keith B. Rodgers Jorge L. Sarmiento Stephen M. Griffies Ping Zhai |
author_facet |
Daniele Iudicone Richard D. Slater Laure Resplandy Keith B. Rodgers Jorge L. Sarmiento Stephen M. Griffies Ping Zhai |
author_sort |
Daniele Iudicone |
title |
Mechanistic Drivers of Reemergence of Anthropogenic Carbon in the Equatorial Pacific |
title_short |
Mechanistic Drivers of Reemergence of Anthropogenic Carbon in the Equatorial Pacific |
title_full |
Mechanistic Drivers of Reemergence of Anthropogenic Carbon in the Equatorial Pacific |
title_fullStr |
Mechanistic Drivers of Reemergence of Anthropogenic Carbon in the Equatorial Pacific |
title_full_unstemmed |
Mechanistic Drivers of Reemergence of Anthropogenic Carbon in the Equatorial Pacific |
title_sort |
mechanistic drivers of reemergence of anthropogenic carbon in the equatorial pacific |
publishDate |
2017 |
url |
https://www.openaccessrepository.it/record/77297 https://doi.org/10.1002/2017gl073758 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
url:https://www.openaccessrepository.it/communities/itmirror https://www.openaccessrepository.it/record/77297 doi:10.1002/2017gl073758 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2017gl073758 |
container_title |
Geophysical Research Letters |
container_volume |
44 |
container_issue |
18 |
container_start_page |
9433 |
op_container_end_page |
9439 |
_version_ |
1780740627523174400 |