Sensitivity of sea-to-air CO2 flux to ecosystem parameters from an adjoint model
An adjoint model is applied to examine the biophysical factors that control surface pCO2 in different ocean regions. In the tropical Atlantic and Indian Oceans, the annual cycle of pCO2 in the model is highly dominated by temperature variability, whereas both the temperature and dissolved inorganic...
Published in: | Biogeosciences |
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Copernicus Publications
2008
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00031585 2023-05-15T17:30:20+02:00 Sensitivity of sea-to-air CO2 flux to ecosystem parameters from an adjoint model Tjiputra, J. F. Winguth, A. M. E. 2008-04 electronic https://doi.org/10.5194/bg-5-615-2008 https://noa.gwlb.de/receive/cop_mods_00031585 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031539/bg-5-615-2008.pdf https://bg.copernicus.org/articles/5/615/2008/bg-5-615-2008.pdf eng eng Copernicus Publications Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-5-615-2008 https://noa.gwlb.de/receive/cop_mods_00031585 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031539/bg-5-615-2008.pdf https://bg.copernicus.org/articles/5/615/2008/bg-5-615-2008.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2008 ftnonlinearchiv https://doi.org/10.5194/bg-5-615-2008 2022-02-08T22:46:40Z An adjoint model is applied to examine the biophysical factors that control surface pCO2 in different ocean regions. In the tropical Atlantic and Indian Oceans, the annual cycle of pCO2 in the model is highly dominated by temperature variability, whereas both the temperature and dissolved inorganic carbon (DIC) are important in the tropical Pacific. In the high-latitude North Atlantic and Southern Oceans, DIC variability mainly drives the annual cycle of surface pCO2. Phosphate addition significantly increases the carbon uptake in the tropical and subtropical regions, whereas nitrate addition increases the carbon uptake in the subarctic Pacific Ocean. The carbon uptake is also sensitive to changes in the physiological rate parameters in the ecosystem model in the equatorial Pacific, North Pacific, North Atlantic, and the Southern Ocean. Zooplankton grazing plays a major role in carbon exchange, especially in the HNLC regions. The grazing parameter regulates the phytoplankton biomass at the surface, thus controlling the biological production and the carbon uptake by photosynthesis. In the oligotrophic subtropical regions, the sea-to-air CO2 flux is sensitive to changes in the phytoplankton exudation rate by altering the flux of regenerated nutrients essential for photosynthesis. Article in Journal/Newspaper North Atlantic Southern Ocean Subarctic Niedersächsisches Online-Archiv NOA Southern Ocean Pacific Indian Biogeosciences 5 2 615 630 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Tjiputra, J. F. Winguth, A. M. E. Sensitivity of sea-to-air CO2 flux to ecosystem parameters from an adjoint model |
topic_facet |
article Verlagsveröffentlichung |
description |
An adjoint model is applied to examine the biophysical factors that control surface pCO2 in different ocean regions. In the tropical Atlantic and Indian Oceans, the annual cycle of pCO2 in the model is highly dominated by temperature variability, whereas both the temperature and dissolved inorganic carbon (DIC) are important in the tropical Pacific. In the high-latitude North Atlantic and Southern Oceans, DIC variability mainly drives the annual cycle of surface pCO2. Phosphate addition significantly increases the carbon uptake in the tropical and subtropical regions, whereas nitrate addition increases the carbon uptake in the subarctic Pacific Ocean. The carbon uptake is also sensitive to changes in the physiological rate parameters in the ecosystem model in the equatorial Pacific, North Pacific, North Atlantic, and the Southern Ocean. Zooplankton grazing plays a major role in carbon exchange, especially in the HNLC regions. The grazing parameter regulates the phytoplankton biomass at the surface, thus controlling the biological production and the carbon uptake by photosynthesis. In the oligotrophic subtropical regions, the sea-to-air CO2 flux is sensitive to changes in the phytoplankton exudation rate by altering the flux of regenerated nutrients essential for photosynthesis. |
format |
Article in Journal/Newspaper |
author |
Tjiputra, J. F. Winguth, A. M. E. |
author_facet |
Tjiputra, J. F. Winguth, A. M. E. |
author_sort |
Tjiputra, J. F. |
title |
Sensitivity of sea-to-air CO2 flux to ecosystem parameters from an adjoint model |
title_short |
Sensitivity of sea-to-air CO2 flux to ecosystem parameters from an adjoint model |
title_full |
Sensitivity of sea-to-air CO2 flux to ecosystem parameters from an adjoint model |
title_fullStr |
Sensitivity of sea-to-air CO2 flux to ecosystem parameters from an adjoint model |
title_full_unstemmed |
Sensitivity of sea-to-air CO2 flux to ecosystem parameters from an adjoint model |
title_sort |
sensitivity of sea-to-air co2 flux to ecosystem parameters from an adjoint model |
publisher |
Copernicus Publications |
publishDate |
2008 |
url |
https://doi.org/10.5194/bg-5-615-2008 https://noa.gwlb.de/receive/cop_mods_00031585 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031539/bg-5-615-2008.pdf https://bg.copernicus.org/articles/5/615/2008/bg-5-615-2008.pdf |
geographic |
Southern Ocean Pacific Indian |
geographic_facet |
Southern Ocean Pacific Indian |
genre |
North Atlantic Southern Ocean Subarctic |
genre_facet |
North Atlantic Southern Ocean Subarctic |
op_relation |
Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-5-615-2008 https://noa.gwlb.de/receive/cop_mods_00031585 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031539/bg-5-615-2008.pdf https://bg.copernicus.org/articles/5/615/2008/bg-5-615-2008.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-5-615-2008 |
container_title |
Biogeosciences |
container_volume |
5 |
container_issue |
2 |
container_start_page |
615 |
op_container_end_page |
630 |
_version_ |
1766126691649847296 |