Sea–air CO2 fluxes in the Southern Ocean for the period 1990–2009
© The Author(s), 2013. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Biogeosciences 19 (2013): 4037-4054, doi:10.5194/bg-10-4037-2013. The Southern Ocean (44–75° S) plays a critical role in the global carbon cycle, ye...
Published in: | Biogeosciences |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications on behalf of the European Geosciences Union
2013
|
Subjects: | |
Online Access: | https://hdl.handle.net/1912/6203 |
id |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/6203 |
---|---|
record_format |
openpolar |
spelling |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/6203 2023-05-15T18:24:51+02:00 Sea–air CO2 fluxes in the Southern Ocean for the period 1990–2009 Lenton, Andrew Tilbrook, Bronte Law, R. M. Bakker, Dorothee C. E. Doney, Scott C. Gruber, Nicolas Ishii, Masao Hoppema, Mario Lovenduski, Nicole S. Matear, Richard J. McNeil, B. I. Metzl, Nicolas Mikaloff Fletcher, Sara E. Monteiro, Pedro M. S. Rodenbeck, C. Sweeney, Colm Takahashi, Taro 2013-06-19 application/pdf https://hdl.handle.net/1912/6203 en eng Copernicus Publications on behalf of the European Geosciences Union https://doi.org/10.5194/bg-10-4037-2013 Biogeosciences 19 (2013): 4037-4054 https://hdl.handle.net/1912/6203 doi:10.5194/bg-10-4037-2013 Attribution 3.0 Unported http://creativecommons.org/licenses/by/3.0/ CC-BY Biogeosciences 19 (2013): 4037-4054 doi:10.5194/bg-10-4037-2013 Article 2013 ftwhoas https://doi.org/10.5194/bg-10-4037-2013 2022-05-28T22:58:56Z © The Author(s), 2013. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Biogeosciences 19 (2013): 4037-4054, doi:10.5194/bg-10-4037-2013. The Southern Ocean (44–75° S) plays a critical role in the global carbon cycle, yet remains one of the most poorly sampled ocean regions. Different approaches have been used to estimate sea–air CO2 fluxes in this region: synthesis of surface ocean observations, ocean biogeochemical models, and atmospheric and ocean inversions. As part of the RECCAP (REgional Carbon Cycle Assessment and Processes) project, we combine these different approaches to quantify and assess the magnitude and variability in Southern Ocean sea–air CO2 fluxes between 1990–2009. Using all models and inversions (26), the integrated median annual sea–air CO2 flux of −0.42 ± 0.07 Pg C yr−1 for the 44–75° S region, is consistent with the −0.27 ± 0.13 Pg C yr−1 calculated using surface observations. The circumpolar region south of 58° S has a small net annual flux (model and inversion median: −0.04 ± 0.07 Pg C yr−1 and observations: +0.04 ± 0.02 Pg C yr−1), with most of the net annual flux located in the 44 to 58° S circumpolar band (model and inversion median: −0.36 ± 0.09 Pg C yr−1 and observations: −0.35 ± 0.09 Pg C yr−1). Seasonally, in the 44–58° S region, the median of 5 ocean biogeochemical models captures the observed sea–air CO2 flux seasonal cycle, while the median of 11 atmospheric inversions shows little seasonal change in the net flux. South of 58° S, neither atmospheric inversions nor ocean biogeochemical models reproduce the phase and amplitude of the observed seasonal sea–air CO2 flux, particularly in the Austral Winter. Importantly, no individual atmospheric inversion or ocean biogeochemical model is capable of reproducing both the observed annual mean uptake and the observed seasonal cycle. This raises concerns about projecting future changes in Southern Ocean CO2 fluxes. The median interannual variability from ... Article in Journal/Newspaper Southern Ocean Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Austral Southern Ocean Biogeosciences 10 6 4037 4054 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
description |
© The Author(s), 2013. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Biogeosciences 19 (2013): 4037-4054, doi:10.5194/bg-10-4037-2013. The Southern Ocean (44–75° S) plays a critical role in the global carbon cycle, yet remains one of the most poorly sampled ocean regions. Different approaches have been used to estimate sea–air CO2 fluxes in this region: synthesis of surface ocean observations, ocean biogeochemical models, and atmospheric and ocean inversions. As part of the RECCAP (REgional Carbon Cycle Assessment and Processes) project, we combine these different approaches to quantify and assess the magnitude and variability in Southern Ocean sea–air CO2 fluxes between 1990–2009. Using all models and inversions (26), the integrated median annual sea–air CO2 flux of −0.42 ± 0.07 Pg C yr−1 for the 44–75° S region, is consistent with the −0.27 ± 0.13 Pg C yr−1 calculated using surface observations. The circumpolar region south of 58° S has a small net annual flux (model and inversion median: −0.04 ± 0.07 Pg C yr−1 and observations: +0.04 ± 0.02 Pg C yr−1), with most of the net annual flux located in the 44 to 58° S circumpolar band (model and inversion median: −0.36 ± 0.09 Pg C yr−1 and observations: −0.35 ± 0.09 Pg C yr−1). Seasonally, in the 44–58° S region, the median of 5 ocean biogeochemical models captures the observed sea–air CO2 flux seasonal cycle, while the median of 11 atmospheric inversions shows little seasonal change in the net flux. South of 58° S, neither atmospheric inversions nor ocean biogeochemical models reproduce the phase and amplitude of the observed seasonal sea–air CO2 flux, particularly in the Austral Winter. Importantly, no individual atmospheric inversion or ocean biogeochemical model is capable of reproducing both the observed annual mean uptake and the observed seasonal cycle. This raises concerns about projecting future changes in Southern Ocean CO2 fluxes. The median interannual variability from ... |
format |
Article in Journal/Newspaper |
author |
Lenton, Andrew Tilbrook, Bronte Law, R. M. Bakker, Dorothee C. E. Doney, Scott C. Gruber, Nicolas Ishii, Masao Hoppema, Mario Lovenduski, Nicole S. Matear, Richard J. McNeil, B. I. Metzl, Nicolas Mikaloff Fletcher, Sara E. Monteiro, Pedro M. S. Rodenbeck, C. Sweeney, Colm Takahashi, Taro |
spellingShingle |
Lenton, Andrew Tilbrook, Bronte Law, R. M. Bakker, Dorothee C. E. Doney, Scott C. Gruber, Nicolas Ishii, Masao Hoppema, Mario Lovenduski, Nicole S. Matear, Richard J. McNeil, B. I. Metzl, Nicolas Mikaloff Fletcher, Sara E. Monteiro, Pedro M. S. Rodenbeck, C. Sweeney, Colm Takahashi, Taro Sea–air CO2 fluxes in the Southern Ocean for the period 1990–2009 |
author_facet |
Lenton, Andrew Tilbrook, Bronte Law, R. M. Bakker, Dorothee C. E. Doney, Scott C. Gruber, Nicolas Ishii, Masao Hoppema, Mario Lovenduski, Nicole S. Matear, Richard J. McNeil, B. I. Metzl, Nicolas Mikaloff Fletcher, Sara E. Monteiro, Pedro M. S. Rodenbeck, C. Sweeney, Colm Takahashi, Taro |
author_sort |
Lenton, Andrew |
title |
Sea–air CO2 fluxes in the Southern Ocean for the period 1990–2009 |
title_short |
Sea–air CO2 fluxes in the Southern Ocean for the period 1990–2009 |
title_full |
Sea–air CO2 fluxes in the Southern Ocean for the period 1990–2009 |
title_fullStr |
Sea–air CO2 fluxes in the Southern Ocean for the period 1990–2009 |
title_full_unstemmed |
Sea–air CO2 fluxes in the Southern Ocean for the period 1990–2009 |
title_sort |
sea–air co2 fluxes in the southern ocean for the period 1990–2009 |
publisher |
Copernicus Publications on behalf of the European Geosciences Union |
publishDate |
2013 |
url |
https://hdl.handle.net/1912/6203 |
geographic |
Austral Southern Ocean |
geographic_facet |
Austral Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Biogeosciences 19 (2013): 4037-4054 doi:10.5194/bg-10-4037-2013 |
op_relation |
https://doi.org/10.5194/bg-10-4037-2013 Biogeosciences 19 (2013): 4037-4054 https://hdl.handle.net/1912/6203 doi:10.5194/bg-10-4037-2013 |
op_rights |
Attribution 3.0 Unported http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/bg-10-4037-2013 |
container_title |
Biogeosciences |
container_volume |
10 |
container_issue |
6 |
container_start_page |
4037 |
op_container_end_page |
4054 |
_version_ |
1766205808619552768 |