The Spatiotemporal Dynamics of the Sources and Sinks of CO2 in the Global Coastal Ocean
In contrast to the open ocean, the sources and sinks for atmospheric carbon dioxide (CO2) in the coastal seas are poorly constrained and understood. Here we address this knowledge gap by analyzing the spatial and temporal variability of the coastal air-sea flux of CO2 (FCO2) using a recent high-reso...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/298723 2023-05-15T15:12:00+02:00 The Spatiotemporal Dynamics of the Sources and Sinks of CO2 in the Global Coastal Ocean Roobaert, Alizée Laruelle, Goulven Gildas Landschutzer, Peter Gruber, Nicolas Chou, Lei Regnier, Pierre 2019-03-01 2 full-text file(s): application/pdf | application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/298723 https://dipot.ulb.ac.be/dspace/bitstream/2013/298723/4/Roobaert_et_al_2019.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/298723/3/Roobaert_et_al_2019.pdf en eng uri/info:doi/10.1029/2019GB006239 uri/info:scp/85076767925 https://dipot.ulb.ac.be/dspace/bitstream/2013/298723/4/Roobaert_et_al_2019.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/298723/3/Roobaert_et_al_2019.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/298723 2 full-text file(s): info:eu-repo/semantics/openAccess | info:eu-repo/semantics/restrictedAccess Global biogeochemical cycles Environnement et pollution Technologie de l'environnement contrôle de la pollution Phénomènes atmosphériques air-sea CO2 exchange coastal seas continental shelves ocean carbon cycle seasonality info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2019 ftunivbruxelles 2022-06-12T22:08:19Z In contrast to the open ocean, the sources and sinks for atmospheric carbon dioxide (CO2) in the coastal seas are poorly constrained and understood. Here we address this knowledge gap by analyzing the spatial and temporal variability of the coastal air-sea flux of CO2 (FCO2) using a recent high-resolution (0.25°) monthly climatology for coastal sea surface partial pressure in CO2 (pCO2). Coastal regions are characterized by CO2 sinks at temperate and high latitudes and by CO2 sources at low latitude and in the tropics, with annual mean CO2 flux densities comparable in magnitude and pattern to those of the adjacent open ocean with the exception of river-dominated systems. The seasonal variations in FCO2 are large, often exceeding 2 mol C m−2 year−1, a magnitude similar to the variations exhibited across latitudes. The majority of these seasonal variations stems from the air-sea pCO2 difference, although changes in wind speed and sea ice cover can also be significant regionally. Globally integrated, the coastal seas act currently as a CO2 sink of −0.20 ± 0.02 Pg C year−1, with a more intense uptake occurring in summer because of the disproportionate influence of high-latitude shelves in the Northern Hemisphere. Combined with estimates of the carbon sinks in the open ocean and the Arctic, this gives for the global ocean, averaged over the 1998 to 2015 period an annual net CO2 uptake of −1.7 ± 0.3 Pg C year−1. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Arctic Sea ice DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Arctic |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Environnement et pollution Technologie de l'environnement contrôle de la pollution Phénomènes atmosphériques air-sea CO2 exchange coastal seas continental shelves ocean carbon cycle seasonality |
spellingShingle |
Environnement et pollution Technologie de l'environnement contrôle de la pollution Phénomènes atmosphériques air-sea CO2 exchange coastal seas continental shelves ocean carbon cycle seasonality Roobaert, Alizée Laruelle, Goulven Gildas Landschutzer, Peter Gruber, Nicolas Chou, Lei Regnier, Pierre The Spatiotemporal Dynamics of the Sources and Sinks of CO2 in the Global Coastal Ocean |
topic_facet |
Environnement et pollution Technologie de l'environnement contrôle de la pollution Phénomènes atmosphériques air-sea CO2 exchange coastal seas continental shelves ocean carbon cycle seasonality |
description |
In contrast to the open ocean, the sources and sinks for atmospheric carbon dioxide (CO2) in the coastal seas are poorly constrained and understood. Here we address this knowledge gap by analyzing the spatial and temporal variability of the coastal air-sea flux of CO2 (FCO2) using a recent high-resolution (0.25°) monthly climatology for coastal sea surface partial pressure in CO2 (pCO2). Coastal regions are characterized by CO2 sinks at temperate and high latitudes and by CO2 sources at low latitude and in the tropics, with annual mean CO2 flux densities comparable in magnitude and pattern to those of the adjacent open ocean with the exception of river-dominated systems. The seasonal variations in FCO2 are large, often exceeding 2 mol C m−2 year−1, a magnitude similar to the variations exhibited across latitudes. The majority of these seasonal variations stems from the air-sea pCO2 difference, although changes in wind speed and sea ice cover can also be significant regionally. Globally integrated, the coastal seas act currently as a CO2 sink of −0.20 ± 0.02 Pg C year−1, with a more intense uptake occurring in summer because of the disproportionate influence of high-latitude shelves in the Northern Hemisphere. Combined with estimates of the carbon sinks in the open ocean and the Arctic, this gives for the global ocean, averaged over the 1998 to 2015 period an annual net CO2 uptake of −1.7 ± 0.3 Pg C year−1. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Roobaert, Alizée Laruelle, Goulven Gildas Landschutzer, Peter Gruber, Nicolas Chou, Lei Regnier, Pierre |
author_facet |
Roobaert, Alizée Laruelle, Goulven Gildas Landschutzer, Peter Gruber, Nicolas Chou, Lei Regnier, Pierre |
author_sort |
Roobaert, Alizée |
title |
The Spatiotemporal Dynamics of the Sources and Sinks of CO2 in the Global Coastal Ocean |
title_short |
The Spatiotemporal Dynamics of the Sources and Sinks of CO2 in the Global Coastal Ocean |
title_full |
The Spatiotemporal Dynamics of the Sources and Sinks of CO2 in the Global Coastal Ocean |
title_fullStr |
The Spatiotemporal Dynamics of the Sources and Sinks of CO2 in the Global Coastal Ocean |
title_full_unstemmed |
The Spatiotemporal Dynamics of the Sources and Sinks of CO2 in the Global Coastal Ocean |
title_sort |
spatiotemporal dynamics of the sources and sinks of co2 in the global coastal ocean |
publishDate |
2019 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/298723 https://dipot.ulb.ac.be/dspace/bitstream/2013/298723/4/Roobaert_et_al_2019.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/298723/3/Roobaert_et_al_2019.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
Global biogeochemical cycles |
op_relation |
uri/info:doi/10.1029/2019GB006239 uri/info:scp/85076767925 https://dipot.ulb.ac.be/dspace/bitstream/2013/298723/4/Roobaert_et_al_2019.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/298723/3/Roobaert_et_al_2019.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/298723 |
op_rights |
2 full-text file(s): info:eu-repo/semantics/openAccess | info:eu-repo/semantics/restrictedAccess |
_version_ |
1766342762228088832 |