Oceanic sources, sinks, and transport of atmospheric CO2
Author Posting. © American Geophysical Union, 2009. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Global Biogeochemical Cycles 23 (2009): GB1005, doi:10.1029/2008GB003349. We synthesize estima...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/3415 2023-05-15T18:25:22+02:00 Oceanic sources, sinks, and transport of atmospheric CO2 Gruber, Nicolas Gloor, Emanuel Mikaloff Fletcher, Sara E. Doney, Scott C. Dutkiewicz, Stephanie Follows, Michael J. Gerber, Markus Jacobson, Andrew R. Joos, Fortunat Lindsay, Keith Menemenlis, Dimitris Mouchet, Anne Muller, Simon A. Sarmiento, Jorge L. Takahashi, Taro 2009-02-18 application/pdf text/plain application/postscript https://hdl.handle.net/1912/3415 en_US eng American Geophysical Union https://doi.org/10.1029/2008GB003349 Global Biogeochemical Cycles 23 (2009): GB1005 https://hdl.handle.net/1912/3415 doi:10.1029/2008GB003349 Global Biogeochemical Cycles 23 (2009): GB1005 doi:10.1029/2008GB003349 Air-sea carbon flux Carbon flux Anthropogenic CO2 Article 2009 ftwhoas https://doi.org/10.1029/2008GB003349 2022-05-28T22:57:58Z Author Posting. © American Geophysical Union, 2009. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Global Biogeochemical Cycles 23 (2009): GB1005, doi:10.1029/2008GB003349. We synthesize estimates of the contemporary net air-sea CO2 flux on the basis of an inversion of interior ocean carbon observations using a suite of 10 ocean general circulation models (Mikaloff Fletcher et al., 2006, 2007) and compare them to estimates based on a new climatology of the air-sea difference of the partial pressure of CO2 (pCO2) (Takahashi et al., 2008). These two independent flux estimates reveal a consistent description of the regional distribution of annual mean sources and sinks of atmospheric CO2 for the decade of the 1990s and the early 2000s with differences at the regional level of generally less than 0.1 Pg C a−1. This distribution is characterized by outgassing in the tropics, uptake in midlatitudes, and comparatively small fluxes in thehigh latitudes. Both estimates point toward a small (∼ −0.3 Pg C a−1) contemporary CO2 sink in the Southern Ocean (south of 44°S), a result of the near cancellation between a substantial outgassing of natural CO2 and a strong uptake of anthropogenic CO2. A notable exception in the generally good agreement between the two estimates exists within the Southern Ocean: the ocean inversion suggests a relatively uniform uptake, while the pCO2-based estimate suggests strong uptake in the region between 58°S and 44°S, and a source in the region south of 58°S. Globally and for a nominal period between 1995 and 2000, the contemporary net air-sea flux of CO2 is estimated to be −1.7 ± 0.4 Pg C a−1 (inversion) and −1.4 ± 0.7 Pg C a−1 (pCO2-climatology), respectively, consisting of an outgassing flux of river-derived carbon of ∼+0.5 Pg C a−1, and an uptake flux of anthropogenic carbon of −2.2 ± 0.3 Pg C a−1 (inversion) and −1.9 ± 0.7 Pg C a−1 (pCO2-climatology). The two flux estimates also ... Article in Journal/Newspaper Southern Ocean Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Southern Ocean Global Biogeochemical Cycles 23 1 n/a n/a |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Air-sea carbon flux Carbon flux Anthropogenic CO2 |
spellingShingle |
Air-sea carbon flux Carbon flux Anthropogenic CO2 Gruber, Nicolas Gloor, Emanuel Mikaloff Fletcher, Sara E. Doney, Scott C. Dutkiewicz, Stephanie Follows, Michael J. Gerber, Markus Jacobson, Andrew R. Joos, Fortunat Lindsay, Keith Menemenlis, Dimitris Mouchet, Anne Muller, Simon A. Sarmiento, Jorge L. Takahashi, Taro Oceanic sources, sinks, and transport of atmospheric CO2 |
topic_facet |
Air-sea carbon flux Carbon flux Anthropogenic CO2 |
description |
Author Posting. © American Geophysical Union, 2009. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Global Biogeochemical Cycles 23 (2009): GB1005, doi:10.1029/2008GB003349. We synthesize estimates of the contemporary net air-sea CO2 flux on the basis of an inversion of interior ocean carbon observations using a suite of 10 ocean general circulation models (Mikaloff Fletcher et al., 2006, 2007) and compare them to estimates based on a new climatology of the air-sea difference of the partial pressure of CO2 (pCO2) (Takahashi et al., 2008). These two independent flux estimates reveal a consistent description of the regional distribution of annual mean sources and sinks of atmospheric CO2 for the decade of the 1990s and the early 2000s with differences at the regional level of generally less than 0.1 Pg C a−1. This distribution is characterized by outgassing in the tropics, uptake in midlatitudes, and comparatively small fluxes in thehigh latitudes. Both estimates point toward a small (∼ −0.3 Pg C a−1) contemporary CO2 sink in the Southern Ocean (south of 44°S), a result of the near cancellation between a substantial outgassing of natural CO2 and a strong uptake of anthropogenic CO2. A notable exception in the generally good agreement between the two estimates exists within the Southern Ocean: the ocean inversion suggests a relatively uniform uptake, while the pCO2-based estimate suggests strong uptake in the region between 58°S and 44°S, and a source in the region south of 58°S. Globally and for a nominal period between 1995 and 2000, the contemporary net air-sea flux of CO2 is estimated to be −1.7 ± 0.4 Pg C a−1 (inversion) and −1.4 ± 0.7 Pg C a−1 (pCO2-climatology), respectively, consisting of an outgassing flux of river-derived carbon of ∼+0.5 Pg C a−1, and an uptake flux of anthropogenic carbon of −2.2 ± 0.3 Pg C a−1 (inversion) and −1.9 ± 0.7 Pg C a−1 (pCO2-climatology). The two flux estimates also ... |
format |
Article in Journal/Newspaper |
author |
Gruber, Nicolas Gloor, Emanuel Mikaloff Fletcher, Sara E. Doney, Scott C. Dutkiewicz, Stephanie Follows, Michael J. Gerber, Markus Jacobson, Andrew R. Joos, Fortunat Lindsay, Keith Menemenlis, Dimitris Mouchet, Anne Muller, Simon A. Sarmiento, Jorge L. Takahashi, Taro |
author_facet |
Gruber, Nicolas Gloor, Emanuel Mikaloff Fletcher, Sara E. Doney, Scott C. Dutkiewicz, Stephanie Follows, Michael J. Gerber, Markus Jacobson, Andrew R. Joos, Fortunat Lindsay, Keith Menemenlis, Dimitris Mouchet, Anne Muller, Simon A. Sarmiento, Jorge L. Takahashi, Taro |
author_sort |
Gruber, Nicolas |
title |
Oceanic sources, sinks, and transport of atmospheric CO2 |
title_short |
Oceanic sources, sinks, and transport of atmospheric CO2 |
title_full |
Oceanic sources, sinks, and transport of atmospheric CO2 |
title_fullStr |
Oceanic sources, sinks, and transport of atmospheric CO2 |
title_full_unstemmed |
Oceanic sources, sinks, and transport of atmospheric CO2 |
title_sort |
oceanic sources, sinks, and transport of atmospheric co2 |
publisher |
American Geophysical Union |
publishDate |
2009 |
url |
https://hdl.handle.net/1912/3415 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Global Biogeochemical Cycles 23 (2009): GB1005 doi:10.1029/2008GB003349 |
op_relation |
https://doi.org/10.1029/2008GB003349 Global Biogeochemical Cycles 23 (2009): GB1005 https://hdl.handle.net/1912/3415 doi:10.1029/2008GB003349 |
op_doi |
https://doi.org/10.1029/2008GB003349 |
container_title |
Global Biogeochemical Cycles |
container_volume |
23 |
container_issue |
1 |
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n/a |
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n/a |
_version_ |
1766206779132215296 |