Partitioning of ocean and land uptake of CO 2 as inferred by δ 13 C measurements from the NOAA Climate Monitoring and Diagnostics Laboratory Global Air Sampling Network
International audience Using δ13C measurements in atmospheric CO2 from a cooperative global air sampling network, we determined the partitioning of the net uptake of CO2 between ocean and land as a function of latitude and time. The majority of δ13C measurements were made at the Institute of Arctic...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.science/hal-02923786 https://hal.science/hal-02923786/document https://hal.science/hal-02923786/file/e286fb6e47768d2f3554af812b605ee9710a.pdf https://doi.org/10.1029/94JD02847 |
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ftinsu:oai:HAL:hal-02923786v1 2023-12-24T10:14:46+01:00 Partitioning of ocean and land uptake of CO 2 as inferred by δ 13 C measurements from the NOAA Climate Monitoring and Diagnostics Laboratory Global Air Sampling Network Ciais, Philippe Tans, Pieter White, James W. C. Trolier, Michael Francey, Roger Berry, Joe Randall, David Sellers, Piers Collatz, James Schimel, David Laboratoire de Modélisation du Climat et de l'Environnement (LMCE) National Oceanic and Atmospheric Administration (NOAA) University of Colorado Boulder Commonwealth Scientific and Industrial Research Organisation Canberra (CSIRO) Department of Global Ecology Carnegie Institution for Science Manchester Metropolitan University (MMU) NASA Goddard Space Flight Center (GSFC) National Center for Atmospheric Research Boulder (NCAR) 1995 https://hal.science/hal-02923786 https://hal.science/hal-02923786/document https://hal.science/hal-02923786/file/e286fb6e47768d2f3554af812b605ee9710a.pdf https://doi.org/10.1029/94JD02847 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/94JD02847 hal-02923786 https://hal.science/hal-02923786 https://hal.science/hal-02923786/document https://hal.science/hal-02923786/file/e286fb6e47768d2f3554af812b605ee9710a.pdf doi:10.1029/94JD02847 info:eu-repo/semantics/OpenAccess ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-02923786 Journal of Geophysical Research, 1995, 100 (D3), pp.5051-5069. ⟨10.1029/94JD02847⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 1995 ftinsu https://doi.org/10.1029/94JD02847 2023-11-29T17:26:19Z International audience Using δ13C measurements in atmospheric CO2 from a cooperative global air sampling network, we determined the partitioning of the net uptake of CO2 between ocean and land as a function of latitude and time. The majority of δ13C measurements were made at the Institute of Arctic and Alpine Research (INSTAAR) of the University of Colorado. The network included 40 sites in 1992 and constitutes the most extensive data set available. We perform an inverse deconvolution of both CO2 and δ13C observations, using a two‐dimensional model of atmospheric transport. New features of the method include a detailed calculation of the isotopic disequilibrium of the terrestrial biosphere from global runs of the CENTURY soil model. Also, the discrimination against 13C by plant photosynthesis, as a function of latitude and time, is calculated from global runs of the SiB biosphere model. Uncertainty due to the longitudinal structure of the data, which is not represented by the model, is studied through a bootstrap analysis by adding and omitting measurement sites. The resulting error estimates for our inferred sources and sinks are of the order of 1 GTC (1 GTC = 1015 gC). Such error bars do not reflect potential systematic errors arising from our estimates of the isotopic disequilibria between the atmosphere and the oceans and biosphere, which are estimated in a separate sensitivity analysis. With respect to global totals for 1992 we found that 3.1 GTC of carbon dissolved into the ocean and that 1.5 GTC were sequestered by land ecosystems. Northern hemisphere ocean gyres north of 15°N absorbed 2.7 GTC. The equatorial oceans between 10°S and 10°N were a net source to the atmosphere of 0.9 GTC. We obtained a sink of 1.6 GTC in southern ocean gyres south of 20°S, although the deconvolution is poorly constrained by sparse data coverage at high southern latitudes. The seasonal uptake of CO2 in northern gyres appears to be correlated with a bloom of phytoplankton in surface waters. On land, northern temperate and ... Article in Journal/Newspaper Arctic Institute of Arctic and Alpine Research Phytoplankton Southern Ocean Institut national des sciences de l'Univers: HAL-INSU Arctic Southern Ocean Journal of Geophysical Research 100 D3 5051 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Ciais, Philippe Tans, Pieter White, James W. C. Trolier, Michael Francey, Roger Berry, Joe Randall, David Sellers, Piers Collatz, James Schimel, David Partitioning of ocean and land uptake of CO 2 as inferred by δ 13 C measurements from the NOAA Climate Monitoring and Diagnostics Laboratory Global Air Sampling Network |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Using δ13C measurements in atmospheric CO2 from a cooperative global air sampling network, we determined the partitioning of the net uptake of CO2 between ocean and land as a function of latitude and time. The majority of δ13C measurements were made at the Institute of Arctic and Alpine Research (INSTAAR) of the University of Colorado. The network included 40 sites in 1992 and constitutes the most extensive data set available. We perform an inverse deconvolution of both CO2 and δ13C observations, using a two‐dimensional model of atmospheric transport. New features of the method include a detailed calculation of the isotopic disequilibrium of the terrestrial biosphere from global runs of the CENTURY soil model. Also, the discrimination against 13C by plant photosynthesis, as a function of latitude and time, is calculated from global runs of the SiB biosphere model. Uncertainty due to the longitudinal structure of the data, which is not represented by the model, is studied through a bootstrap analysis by adding and omitting measurement sites. The resulting error estimates for our inferred sources and sinks are of the order of 1 GTC (1 GTC = 1015 gC). Such error bars do not reflect potential systematic errors arising from our estimates of the isotopic disequilibria between the atmosphere and the oceans and biosphere, which are estimated in a separate sensitivity analysis. With respect to global totals for 1992 we found that 3.1 GTC of carbon dissolved into the ocean and that 1.5 GTC were sequestered by land ecosystems. Northern hemisphere ocean gyres north of 15°N absorbed 2.7 GTC. The equatorial oceans between 10°S and 10°N were a net source to the atmosphere of 0.9 GTC. We obtained a sink of 1.6 GTC in southern ocean gyres south of 20°S, although the deconvolution is poorly constrained by sparse data coverage at high southern latitudes. The seasonal uptake of CO2 in northern gyres appears to be correlated with a bloom of phytoplankton in surface waters. On land, northern temperate and ... |
author2 |
Laboratoire de Modélisation du Climat et de l'Environnement (LMCE) National Oceanic and Atmospheric Administration (NOAA) University of Colorado Boulder Commonwealth Scientific and Industrial Research Organisation Canberra (CSIRO) Department of Global Ecology Carnegie Institution for Science Manchester Metropolitan University (MMU) NASA Goddard Space Flight Center (GSFC) National Center for Atmospheric Research Boulder (NCAR) |
format |
Article in Journal/Newspaper |
author |
Ciais, Philippe Tans, Pieter White, James W. C. Trolier, Michael Francey, Roger Berry, Joe Randall, David Sellers, Piers Collatz, James Schimel, David |
author_facet |
Ciais, Philippe Tans, Pieter White, James W. C. Trolier, Michael Francey, Roger Berry, Joe Randall, David Sellers, Piers Collatz, James Schimel, David |
author_sort |
Ciais, Philippe |
title |
Partitioning of ocean and land uptake of CO 2 as inferred by δ 13 C measurements from the NOAA Climate Monitoring and Diagnostics Laboratory Global Air Sampling Network |
title_short |
Partitioning of ocean and land uptake of CO 2 as inferred by δ 13 C measurements from the NOAA Climate Monitoring and Diagnostics Laboratory Global Air Sampling Network |
title_full |
Partitioning of ocean and land uptake of CO 2 as inferred by δ 13 C measurements from the NOAA Climate Monitoring and Diagnostics Laboratory Global Air Sampling Network |
title_fullStr |
Partitioning of ocean and land uptake of CO 2 as inferred by δ 13 C measurements from the NOAA Climate Monitoring and Diagnostics Laboratory Global Air Sampling Network |
title_full_unstemmed |
Partitioning of ocean and land uptake of CO 2 as inferred by δ 13 C measurements from the NOAA Climate Monitoring and Diagnostics Laboratory Global Air Sampling Network |
title_sort |
partitioning of ocean and land uptake of co 2 as inferred by δ 13 c measurements from the noaa climate monitoring and diagnostics laboratory global air sampling network |
publisher |
HAL CCSD |
publishDate |
1995 |
url |
https://hal.science/hal-02923786 https://hal.science/hal-02923786/document https://hal.science/hal-02923786/file/e286fb6e47768d2f3554af812b605ee9710a.pdf https://doi.org/10.1029/94JD02847 |
geographic |
Arctic Southern Ocean |
geographic_facet |
Arctic Southern Ocean |
genre |
Arctic Institute of Arctic and Alpine Research Phytoplankton Southern Ocean |
genre_facet |
Arctic Institute of Arctic and Alpine Research Phytoplankton Southern Ocean |
op_source |
ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-02923786 Journal of Geophysical Research, 1995, 100 (D3), pp.5051-5069. ⟨10.1029/94JD02847⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/94JD02847 hal-02923786 https://hal.science/hal-02923786 https://hal.science/hal-02923786/document https://hal.science/hal-02923786/file/e286fb6e47768d2f3554af812b605ee9710a.pdf doi:10.1029/94JD02847 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/94JD02847 |
container_title |
Journal of Geophysical Research |
container_volume |
100 |
container_issue |
D3 |
container_start_page |
5051 |
_version_ |
1786197627256176640 |