Reconciling Observation and Model Trends in North Atlantic Surface CO2
The North Atlantic Ocean is a region of intense uptake of atmospheric CO2. To assess how this CO2 sink has evolved over recent decades, various approaches have been used to estimate basin-wide uptake from the irregularly sampled in situ CO2 observations. Until now, the lack of robust uncertainties a...
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fttriple:oai:gotriple.eu:10670/1.4n50za 2023-05-15T17:27:12+02:00 Reconciling Observation and Model Trends in North Atlantic Surface CO2 Lebehot, Alice D. Halloran, Paul Richard Watson, Andrew J. Mcneall, Doug Ford, David A. Landschuetzer, Peter Lauvset, Siv K. Schuster, Ute https://doi.org/10.1029/2019GB006186 https://archimer.ifremer.fr/doc/00675/78721/81005.pdf https://archimer.ifremer.fr/doc/00675/78721/81006.pdf https://archimer.ifremer.fr/doc/00675/78721/ en eng Amer Geophysical Union doi:10.1029/2019GB006186 10670/1.4n50za https://archimer.ifremer.fr/doc/00675/78721/81005.pdf https://archimer.ifremer.fr/doc/00675/78721/81006.pdf https://archimer.ifremer.fr/doc/00675/78721/ other Archimer, archive institutionnelle de l'Ifremer Global Biogeochemical Cycles (0886-6236) (Amer Geophysical Union), 2019-10 , Vol. 33 , N. 10 , P. 1204-1222 envir geo Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ fttriple https://doi.org/10.1029/2019GB006186 2023-01-22T18:20:00Z The North Atlantic Ocean is a region of intense uptake of atmospheric CO2. To assess how this CO2 sink has evolved over recent decades, various approaches have been used to estimate basin-wide uptake from the irregularly sampled in situ CO2 observations. Until now, the lack of robust uncertainties associated with observation-based gap-filling methods required to produce these estimates has limited the capacity to validate climate model simulated surface ocean CO2 concentrations. After robustly quantifying basin-wide and annually varying interpolation uncertainties using both observational and model data, we show that the North Atlantic surface ocean fugacity of CO2 (fCO(2-ocean)) increased at a significantly slower rate than that simulated by the latest generation of Earth System Models during the period 1992-2014. We further show, with initialized model simulations, that the inability of these models to capture the observed trend in surface fCO(2-ocean) is primarily due to biases in the models' ocean biogeochemistry. Our results imply that current projections may underestimate the contribution of the North Atlantic to mitigating increasing future atmospheric CO2 concentrations. Text North Atlantic Unknown Global Biogeochemical Cycles 33 10 1204 1222 |
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envir geo Lebehot, Alice D. Halloran, Paul Richard Watson, Andrew J. Mcneall, Doug Ford, David A. Landschuetzer, Peter Lauvset, Siv K. Schuster, Ute Reconciling Observation and Model Trends in North Atlantic Surface CO2 |
topic_facet |
envir geo |
description |
The North Atlantic Ocean is a region of intense uptake of atmospheric CO2. To assess how this CO2 sink has evolved over recent decades, various approaches have been used to estimate basin-wide uptake from the irregularly sampled in situ CO2 observations. Until now, the lack of robust uncertainties associated with observation-based gap-filling methods required to produce these estimates has limited the capacity to validate climate model simulated surface ocean CO2 concentrations. After robustly quantifying basin-wide and annually varying interpolation uncertainties using both observational and model data, we show that the North Atlantic surface ocean fugacity of CO2 (fCO(2-ocean)) increased at a significantly slower rate than that simulated by the latest generation of Earth System Models during the period 1992-2014. We further show, with initialized model simulations, that the inability of these models to capture the observed trend in surface fCO(2-ocean) is primarily due to biases in the models' ocean biogeochemistry. Our results imply that current projections may underestimate the contribution of the North Atlantic to mitigating increasing future atmospheric CO2 concentrations. |
format |
Text |
author |
Lebehot, Alice D. Halloran, Paul Richard Watson, Andrew J. Mcneall, Doug Ford, David A. Landschuetzer, Peter Lauvset, Siv K. Schuster, Ute |
author_facet |
Lebehot, Alice D. Halloran, Paul Richard Watson, Andrew J. Mcneall, Doug Ford, David A. Landschuetzer, Peter Lauvset, Siv K. Schuster, Ute |
author_sort |
Lebehot, Alice D. |
title |
Reconciling Observation and Model Trends in North Atlantic Surface CO2 |
title_short |
Reconciling Observation and Model Trends in North Atlantic Surface CO2 |
title_full |
Reconciling Observation and Model Trends in North Atlantic Surface CO2 |
title_fullStr |
Reconciling Observation and Model Trends in North Atlantic Surface CO2 |
title_full_unstemmed |
Reconciling Observation and Model Trends in North Atlantic Surface CO2 |
title_sort |
reconciling observation and model trends in north atlantic surface co2 |
publisher |
Amer Geophysical Union |
url |
https://doi.org/10.1029/2019GB006186 https://archimer.ifremer.fr/doc/00675/78721/81005.pdf https://archimer.ifremer.fr/doc/00675/78721/81006.pdf https://archimer.ifremer.fr/doc/00675/78721/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Archimer, archive institutionnelle de l'Ifremer Global Biogeochemical Cycles (0886-6236) (Amer Geophysical Union), 2019-10 , Vol. 33 , N. 10 , P. 1204-1222 |
op_relation |
doi:10.1029/2019GB006186 10670/1.4n50za https://archimer.ifremer.fr/doc/00675/78721/81005.pdf https://archimer.ifremer.fr/doc/00675/78721/81006.pdf https://archimer.ifremer.fr/doc/00675/78721/ |
op_rights |
other |
op_doi |
https://doi.org/10.1029/2019GB006186 |
container_title |
Global Biogeochemical Cycles |
container_volume |
33 |
container_issue |
10 |
container_start_page |
1204 |
op_container_end_page |
1222 |
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1766119152978755584 |