English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/27162
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Air-sea CO2 fluxes in the Atlantic as measured during the FICARAM cruises

AuthorsPadín, 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.
Issue DateJun-2009
PublisherCopernicus Publications
CitationBiogeosciences Discussions 6(3): 5589-5622 (2009)
AbstractA total of fourteen hydrographic cruises spanning 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 performed underway measurements are processed and analysed to describe the meridional air-sea CO2 fluxes (FCO2) along the Atlantic Ocean. The data was organised into different biogeochemical oceanographic provinces, according mainly to the thermohaline characteristics. The obtained spatial and temporal distributions of FCO2 follow the generally expected patterns and annual trends. The Subtropical regions in both hemispheres alternated the CO2 source and sink nature from autumn to spring, respectively. On the other hand, Tropical waters and the Patagonian Sea clearly behaved as sinks of atmospheric CO2 like the waters of the Drake Passage during autumn. The obtained results during the cruises also revealed significant long-term trends, such as the warming of equatorial waters (0.11±0.03°C yr−1) and the decrease of surface salinity (−0.16±0.01 yr−1) in tropical waters caused by the influence of the Amazon River plume. This reduction in surface salinity appears to have a direct influence over the CO2 storage rates, fostering the uptake capacity of atmospheric CO2 (−0.09±0.03 mol m−2 yr−1). An analysis of the biogeochemical forcing on the CO2 fugacity (fCO2) variability performed from an empirical algorithm highlighted the major role of the Amazon River input in the tropical North Atlantic fluxes. In addition, it has provided a quantitative measure of the importance of the thermodynamic control of FCO2 at temperate latitudes.
Description17 páginas, 3 figuras, 3 tablas.
Publisher version (URL)http://dx.doi.org/10.5194/bgd-6-5589-2009
Appears in Collections:(IIM) Artículos
(IMEDEA) Artículos
Files in This Item:
File Description SizeFormat 
bgd-6-5589-2009-print.pdf2,67 MBAdobe PDFThumbnail
Show full item record
Review this work

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.