Air-Sea CO2 fluxes in the Atlantic as measured during boreal spring and autumn
A total of fourteen hydrographic cruises from 2000 to 2008 were conducted during the spring and autumn seasons between Spain and the Southern Ocean under the framework of the Spanish research project FICARAM. The underway measurements were processed and analysed to describe the meridional air-sea CO...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00028920 2023-05-15T16:02:36+02:00 Air-Sea CO2 fluxes in the Atlantic as measured during boreal spring and autumn Padin, X. A. Vázquez-Rodríguez, M. Castaño, M. Velo, A. Alonso-Pérez, F. Gago, J. Gilcoto, M. Álvarez, M. Pardo, P. C. de la Paz, M. Ríos, A. F. Pérez, F. F. 2010-05 electronic https://doi.org/10.5194/bg-7-1587-2010 https://noa.gwlb.de/receive/cop_mods_00028920 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00028875/bg-7-1587-2010.pdf https://bg.copernicus.org/articles/7/1587/2010/bg-7-1587-2010.pdf eng eng Copernicus Publications Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-7-1587-2010 https://noa.gwlb.de/receive/cop_mods_00028920 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00028875/bg-7-1587-2010.pdf https://bg.copernicus.org/articles/7/1587/2010/bg-7-1587-2010.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2010 ftnonlinearchiv https://doi.org/10.5194/bg-7-1587-2010 2022-02-08T22:47:58Z A total of fourteen hydrographic cruises from 2000 to 2008 were conducted during the spring and autumn seasons between Spain and the Southern Ocean under the framework of the Spanish research project FICARAM. The underway measurements were processed and analysed to describe the meridional air-sea CO2 fluxes (FCO2) in the covered sector of the Atlantic Ocean. The data has been grouped into different biogeochemical oceanographic provinces based on thermohaline characteristics. The spatial and temporal distributions of FCO2 followed expected distributions and annual trends reproducing the recent climatological ΔfCO2 estimations with a mean difference of −3 ± 18 μatm (Takahashi et al., 2009). The reduction in the CO2 saturation along the meridional FICARAM cruises represented an increase of 0.02 ± 0.14 mol m−2 yr−1 in the ocean uptake of atmospheric CO2. The subtropical waters in both Hemispheres acted as a sink of atmospheric CO2 during the successive spring seasons and as a source in autumn. The coarse reduction of the ocean uptake of atmospheric CO2 observed in the North Atlantic Ocean was linked to conditions of negative phase of the North Atlantic Oscillation that prevailed during the FICARAM period. Surface waters in the North Equatorial Counter Current revealed a significant long-term decrease of sea surface salinity of −0.16 ± 0.01 yr−1 coinciding with a declination of −3.5 ± 0.9 μatm yr−1 in the air–sea disequilibrium of CO2 fugacity and a rise of oceanic CO2 uptake of −0.09 ± 0.03 mol m−2 yr−1. The largest CO2 source was located in the equatorial upwelling system. These tropical waters that reached emissions of 0.7 ± 0.5 and 1.0 ± 0.7 mol m−2 y−1 in spring and autumn, respectively, showed an interannual warming of 0.11 ± 0.03 °C yr−1 and a wind speed decrease of −0.58 ± 0.14 m s−1 yr−1 in spring cruises which suggest the weakening of upwelling events associated with warm El Niño – Southern Oscillation episodes. Contrary the surface waters of the Patagonian Sea behaved as an intense sink of CO2 in March and November. The oceanic waters of the convergence of Falkland and Brazil Currents showed the strongest CO2 absorption with a rate of −5.4 ± 3.6 mol m−2 yr−1 in November. The Southern Oceans sampled in the Drake Passage behave as an average uptake rate of −1.1 ± 0.9 mol m−2 yr−1 while the distal shelf of the Livingston Island acted as a slight source of CO2 to the atmosphere. Article in Journal/Newspaper Drake Passage Livingston Island North Atlantic North Atlantic oscillation Southern Ocean Niedersächsisches Online-Archiv NOA Drake Passage Livingston Island ENVELOPE(-60.500,-60.500,-62.600,-62.600) Southern Ocean Biogeosciences 7 5 1587 1606 |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
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topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Padin, X. A. Vázquez-Rodríguez, M. Castaño, M. Velo, A. Alonso-Pérez, F. Gago, J. Gilcoto, M. Álvarez, M. Pardo, P. C. de la Paz, M. Ríos, A. F. Pérez, F. F. Air-Sea CO2 fluxes in the Atlantic as measured during boreal spring and autumn |
topic_facet |
article Verlagsveröffentlichung |
description |
A total of fourteen hydrographic cruises from 2000 to 2008 were conducted during the spring and autumn seasons between Spain and the Southern Ocean under the framework of the Spanish research project FICARAM. The underway measurements were processed and analysed to describe the meridional air-sea CO2 fluxes (FCO2) in the covered sector of the Atlantic Ocean. The data has been grouped into different biogeochemical oceanographic provinces based on thermohaline characteristics. The spatial and temporal distributions of FCO2 followed expected distributions and annual trends reproducing the recent climatological ΔfCO2 estimations with a mean difference of −3 ± 18 μatm (Takahashi et al., 2009). The reduction in the CO2 saturation along the meridional FICARAM cruises represented an increase of 0.02 ± 0.14 mol m−2 yr−1 in the ocean uptake of atmospheric CO2. The subtropical waters in both Hemispheres acted as a sink of atmospheric CO2 during the successive spring seasons and as a source in autumn. The coarse reduction of the ocean uptake of atmospheric CO2 observed in the North Atlantic Ocean was linked to conditions of negative phase of the North Atlantic Oscillation that prevailed during the FICARAM period. Surface waters in the North Equatorial Counter Current revealed a significant long-term decrease of sea surface salinity of −0.16 ± 0.01 yr−1 coinciding with a declination of −3.5 ± 0.9 μatm yr−1 in the air–sea disequilibrium of CO2 fugacity and a rise of oceanic CO2 uptake of −0.09 ± 0.03 mol m−2 yr−1. The largest CO2 source was located in the equatorial upwelling system. These tropical waters that reached emissions of 0.7 ± 0.5 and 1.0 ± 0.7 mol m−2 y−1 in spring and autumn, respectively, showed an interannual warming of 0.11 ± 0.03 °C yr−1 and a wind speed decrease of −0.58 ± 0.14 m s−1 yr−1 in spring cruises which suggest the weakening of upwelling events associated with warm El Niño – Southern Oscillation episodes. Contrary the surface waters of the Patagonian Sea behaved as an intense sink of CO2 in March and November. The oceanic waters of the convergence of Falkland and Brazil Currents showed the strongest CO2 absorption with a rate of −5.4 ± 3.6 mol m−2 yr−1 in November. The Southern Oceans sampled in the Drake Passage behave as an average uptake rate of −1.1 ± 0.9 mol m−2 yr−1 while the distal shelf of the Livingston Island acted as a slight source of CO2 to the atmosphere. |
format |
Article in Journal/Newspaper |
author |
Padin, X. A. Vázquez-Rodríguez, M. Castaño, M. Velo, A. Alonso-Pérez, F. Gago, J. Gilcoto, M. Álvarez, M. Pardo, P. C. de la Paz, M. Ríos, A. F. Pérez, F. F. |
author_facet |
Padin, X. A. Vázquez-Rodríguez, M. Castaño, M. Velo, A. Alonso-Pérez, F. Gago, J. Gilcoto, M. Álvarez, M. Pardo, P. C. de la Paz, M. Ríos, A. F. Pérez, F. F. |
author_sort |
Padin, X. A. |
title |
Air-Sea CO2 fluxes in the Atlantic as measured during boreal spring and autumn |
title_short |
Air-Sea CO2 fluxes in the Atlantic as measured during boreal spring and autumn |
title_full |
Air-Sea CO2 fluxes in the Atlantic as measured during boreal spring and autumn |
title_fullStr |
Air-Sea CO2 fluxes in the Atlantic as measured during boreal spring and autumn |
title_full_unstemmed |
Air-Sea CO2 fluxes in the Atlantic as measured during boreal spring and autumn |
title_sort |
air-sea co2 fluxes in the atlantic as measured during boreal spring and autumn |
publisher |
Copernicus Publications |
publishDate |
2010 |
url |
https://doi.org/10.5194/bg-7-1587-2010 https://noa.gwlb.de/receive/cop_mods_00028920 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00028875/bg-7-1587-2010.pdf https://bg.copernicus.org/articles/7/1587/2010/bg-7-1587-2010.pdf |
long_lat |
ENVELOPE(-60.500,-60.500,-62.600,-62.600) |
geographic |
Drake Passage Livingston Island Southern Ocean |
geographic_facet |
Drake Passage Livingston Island Southern Ocean |
genre |
Drake Passage Livingston Island North Atlantic North Atlantic oscillation Southern Ocean |
genre_facet |
Drake Passage Livingston Island North Atlantic North Atlantic oscillation Southern Ocean |
op_relation |
Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-7-1587-2010 https://noa.gwlb.de/receive/cop_mods_00028920 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00028875/bg-7-1587-2010.pdf https://bg.copernicus.org/articles/7/1587/2010/bg-7-1587-2010.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-7-1587-2010 |
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Biogeosciences |
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7 |
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1587 |
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1606 |
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