Anthropogenic CO2 accumulation rates in the North Atlantic Ocean from changes in the 13C/12C of dissolved inorganic carbon
The anthropogenic CO2 accumulation rate for the North Atlantic Ocean was estimated on the basis of the decrease in the δ13C of the dissolved inorganic carbon measured between cruises in 1981 (Transient Tracers in the North Atlantic), 1993 (OACES) and 2003 (Repeat Hydrography). A mean depth‐integrate...
Published in: | Global Biogeochemical Cycles |
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2007
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ftoceanrep:oai:oceanrep.geomar.de:5132 2023-05-15T17:26:44+02:00 Anthropogenic CO2 accumulation rates in the North Atlantic Ocean from changes in the 13C/12C of dissolved inorganic carbon Quay, P. D. Sonnerup, R. Stutsman, J. Maurer, J. Körtzinger, Arne Padin, X.A. Robinson, C. 2007 text https://oceanrep.geomar.de/id/eprint/5132/ https://oceanrep.geomar.de/id/eprint/5132/1/14_Quay_2007_AnthropogenicCo2AccumulationRatesIn_Artzeit_pubid7363.pdf https://doi.org/10.1029/2006GB002761 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/5132/1/14_Quay_2007_AnthropogenicCo2AccumulationRatesIn_Artzeit_pubid7363.pdf Quay, P. D., Sonnerup, R., Stutsman, J., Maurer, J., Körtzinger, A. , Padin, X. A. and Robinson, C. (2007) Anthropogenic CO2 accumulation rates in the North Atlantic Ocean from changes in the 13C/12C of dissolved inorganic carbon. Open Access Global Biogeochemical Cycles, 21 . GB1009. DOI 10.1029/2006GB002761 <https://doi.org/10.1029/2006GB002761>. doi:10.1029/2006GB002761 info:eu-repo/semantics/openAccess Article PeerReviewed 2007 ftoceanrep https://doi.org/10.1029/2006GB002761 2023-04-07T14:50:36Z The anthropogenic CO2 accumulation rate for the North Atlantic Ocean was estimated on the basis of the decrease in the δ13C of the dissolved inorganic carbon measured between cruises in 1981 (Transient Tracers in the North Atlantic), 1993 (OACES) and 2003 (Repeat Hydrography). A mean depth‐integrated δ13C change of −15.0 ± 3.8‰ m yr−1 was estimated by applying a multiple linear regression approach to determine the anthropogenic δ13C decrease at 22 stations where δ13C depth profiles were compared. The largest and deepest anthropogenic δ13C decreases occurred in the subpolar ocean and, in contrast, the smallest and shallowest decreases occurred in the tropical ocean. A mean anthropogenic CO2 accumulation rate of 0.63 ± 0.16 mol C m−2 yr−1 (0.32 ± 0.08 Pg C yr−1) in the North Atlantic Ocean over the last 20 years was determined from the mean depth‐integrated δ13C change and a ratio of anthropogenic δ13C to DIC change of −0.024‰ (μmol kg−1)−1. Only half of the accumulated anthropogenic CO2 in the North Atlantic during the last 20 years was the result of air‐sea CO2 uptake, based on a comparison of the air‐sea 13CO2 flux to the DIC13 inventory change, with the other half likely a result of northward advective transport. Article in Journal/Newspaper North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Global Biogeochemical Cycles 21 1 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The anthropogenic CO2 accumulation rate for the North Atlantic Ocean was estimated on the basis of the decrease in the δ13C of the dissolved inorganic carbon measured between cruises in 1981 (Transient Tracers in the North Atlantic), 1993 (OACES) and 2003 (Repeat Hydrography). A mean depth‐integrated δ13C change of −15.0 ± 3.8‰ m yr−1 was estimated by applying a multiple linear regression approach to determine the anthropogenic δ13C decrease at 22 stations where δ13C depth profiles were compared. The largest and deepest anthropogenic δ13C decreases occurred in the subpolar ocean and, in contrast, the smallest and shallowest decreases occurred in the tropical ocean. A mean anthropogenic CO2 accumulation rate of 0.63 ± 0.16 mol C m−2 yr−1 (0.32 ± 0.08 Pg C yr−1) in the North Atlantic Ocean over the last 20 years was determined from the mean depth‐integrated δ13C change and a ratio of anthropogenic δ13C to DIC change of −0.024‰ (μmol kg−1)−1. Only half of the accumulated anthropogenic CO2 in the North Atlantic during the last 20 years was the result of air‐sea CO2 uptake, based on a comparison of the air‐sea 13CO2 flux to the DIC13 inventory change, with the other half likely a result of northward advective transport. |
format |
Article in Journal/Newspaper |
author |
Quay, P. D. Sonnerup, R. Stutsman, J. Maurer, J. Körtzinger, Arne Padin, X.A. Robinson, C. |
spellingShingle |
Quay, P. D. Sonnerup, R. Stutsman, J. Maurer, J. Körtzinger, Arne Padin, X.A. Robinson, C. Anthropogenic CO2 accumulation rates in the North Atlantic Ocean from changes in the 13C/12C of dissolved inorganic carbon |
author_facet |
Quay, P. D. Sonnerup, R. Stutsman, J. Maurer, J. Körtzinger, Arne Padin, X.A. Robinson, C. |
author_sort |
Quay, P. D. |
title |
Anthropogenic CO2 accumulation rates in the North Atlantic Ocean from changes in the 13C/12C of dissolved inorganic carbon |
title_short |
Anthropogenic CO2 accumulation rates in the North Atlantic Ocean from changes in the 13C/12C of dissolved inorganic carbon |
title_full |
Anthropogenic CO2 accumulation rates in the North Atlantic Ocean from changes in the 13C/12C of dissolved inorganic carbon |
title_fullStr |
Anthropogenic CO2 accumulation rates in the North Atlantic Ocean from changes in the 13C/12C of dissolved inorganic carbon |
title_full_unstemmed |
Anthropogenic CO2 accumulation rates in the North Atlantic Ocean from changes in the 13C/12C of dissolved inorganic carbon |
title_sort |
anthropogenic co2 accumulation rates in the north atlantic ocean from changes in the 13c/12c of dissolved inorganic carbon |
publisher |
AGU (American Geophysical Union) |
publishDate |
2007 |
url |
https://oceanrep.geomar.de/id/eprint/5132/ https://oceanrep.geomar.de/id/eprint/5132/1/14_Quay_2007_AnthropogenicCo2AccumulationRatesIn_Artzeit_pubid7363.pdf https://doi.org/10.1029/2006GB002761 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/5132/1/14_Quay_2007_AnthropogenicCo2AccumulationRatesIn_Artzeit_pubid7363.pdf Quay, P. D., Sonnerup, R., Stutsman, J., Maurer, J., Körtzinger, A. , Padin, X. A. and Robinson, C. (2007) Anthropogenic CO2 accumulation rates in the North Atlantic Ocean from changes in the 13C/12C of dissolved inorganic carbon. Open Access Global Biogeochemical Cycles, 21 . GB1009. DOI 10.1029/2006GB002761 <https://doi.org/10.1029/2006GB002761>. doi:10.1029/2006GB002761 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2006GB002761 |
container_title |
Global Biogeochemical Cycles |
container_volume |
21 |
container_issue |
1 |
_version_ |
1766118515307184128 |