Air-Sea CO2 fluxes in the Atlantic as measured during boreal spring and autumn

20 páginas, 4 figuras, 4 tablas. 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 d...

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Published in:Biogeosciences
Main Authors: Padín, X. A., Vázquez Rodríguez, Marcos, Castaño, Mónica, Velo, A., Alonso Pérez, Fernando, Gago, Jesús, Gilcoto, Miguel, Álvarez, Marta, Pardo, Paula C., Paz, M. de la, Ríos, Aida F., Pérez, Fiz F.
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2010
Subjects:
Online Access:http://hdl.handle.net/10261/27163
https://doi.org/10.5194/bg-7-1587-2010
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spelling ftcsic:oai:digital.csic.es:10261/27163 2024-02-11T10:06:24+01:00 Air-Sea CO2 fluxes in the Atlantic as measured during boreal spring and autumn Padín, X. A. Vázquez Rodríguez, Marcos Castaño, Mónica Velo, A. Alonso Pérez, Fernando Gago, Jesús Gilcoto, Miguel Álvarez, Marta Pardo, Paula C. Paz, M. de la Ríos, Aida F. Pérez, Fiz F. 2010-05 9788022 bytes application/pdf http://hdl.handle.net/10261/27163 https://doi.org/10.5194/bg-7-1587-2010 en eng Copernicus Publications Publisher’s version http://dx.doi.org/10.5194/bg-7-1587-2010 Sí Biogeosciences 7(5): 1587-1606 (2010) 1726-4170 http://hdl.handle.net/10261/27163 doi:10.5194/bg-7-1587-2010 open artículo http://purl.org/coar/resource_type/c_6501 2010 ftcsic https://doi.org/10.5194/bg-7-1587-2010 2024-01-16T09:28:05Z 20 páginas, 4 figuras, 4 tablas. 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 ... Article in Journal/Newspaper North Atlantic North Atlantic oscillation Southern Ocean Digital.CSIC (Spanish National Research Council) Southern Ocean Biogeosciences 7 5 1587 1606
institution Open Polar
collection Digital.CSIC (Spanish National Research Council)
op_collection_id ftcsic
language English
description 20 páginas, 4 figuras, 4 tablas. 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 ...
format Article in Journal/Newspaper
author Padín, X. A.
Vázquez Rodríguez, Marcos
Castaño, Mónica
Velo, A.
Alonso Pérez, Fernando
Gago, Jesús
Gilcoto, Miguel
Álvarez, Marta
Pardo, Paula C.
Paz, M. de la
Ríos, Aida F.
Pérez, Fiz F.
spellingShingle Padín, X. A.
Vázquez Rodríguez, Marcos
Castaño, Mónica
Velo, A.
Alonso Pérez, Fernando
Gago, Jesús
Gilcoto, Miguel
Álvarez, Marta
Pardo, Paula C.
Paz, M. de la
Ríos, Aida F.
Pérez, Fiz F.
Air-Sea CO2 fluxes in the Atlantic as measured during boreal spring and autumn
author_facet Padín, X. A.
Vázquez Rodríguez, Marcos
Castaño, Mónica
Velo, A.
Alonso Pérez, Fernando
Gago, Jesús
Gilcoto, Miguel
Álvarez, Marta
Pardo, Paula C.
Paz, M. de la
Ríos, Aida F.
Pérez, Fiz F.
author_sort Padín, 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 http://hdl.handle.net/10261/27163
https://doi.org/10.5194/bg-7-1587-2010
geographic Southern Ocean
geographic_facet Southern Ocean
genre North Atlantic
North Atlantic oscillation
Southern Ocean
genre_facet North Atlantic
North Atlantic oscillation
Southern Ocean
op_relation Publisher’s version
http://dx.doi.org/10.5194/bg-7-1587-2010

Biogeosciences 7(5): 1587-1606 (2010)
1726-4170
http://hdl.handle.net/10261/27163
doi:10.5194/bg-7-1587-2010
op_rights open
op_doi https://doi.org/10.5194/bg-7-1587-2010
container_title Biogeosciences
container_volume 7
container_issue 5
container_start_page 1587
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