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Title

Net sea-air CO2 flux uncertainties in the Bay of Biscay based on the choice of wind speed products and gas transfer parameterizations

AuthorsOtero, P.; Padín, X. A. ; Ruiz-Villarreal, M.; García-García, L. M.; Ríos, Aida F. ; Pérez, Fiz F.
Issue Date2012
PublisherEuropean Geosciences Union
CitationBiogeosciences Discussions 9: 9993-10017 (2012)
AbstractThe estimation of sea-air CO2 fluxes are largely dependent on wind speed through the gas transfer velocity parameterization. In this paper, we quantify uncertainties in the estimation of the CO2 uptake in the Bay of Biscay resulting from using different sources of wind speed such as three different global reanalysis meteorological models (NCEP/NCAR 1, NCEP/DOE 2 and ERA-Interim), one regional high-resolution forecast model (HIRLAM-AEMet) and QuikSCAT winds, in combination with some of the most widely used gas transfer velocity parameterizations. Results show that net CO2 flux estimations during an entire seasonal cycle may differ up to 240% depending on the wind speed product and the gas exchange parameterization. The comparison of satellite and model derived winds with observations at buoys advises against the systematic overestimation of NCEP-2 and the underestimation of NCEP-1. In this region, QuikSCAT has the best performing, although ERA-Interim becomes the best choice in areas near the coastline or when the time resolution is the constraint.
Description25 páginas, 4 figuras, 1 tabla
Publisher version (URL)http://dx.doi.org/10.5194/bgd-9-9993-2012
URIhttp://hdl.handle.net/10261/78754
DOI10.5194/bgd-9-9993-2012
ISSN1726-4170
E-ISSN1726-4189
Appears in Collections:(IIM) Artículos
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