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Influence of gas exchange coefficient parameterisation on seasonal and regional variability of CO 2 air‐sea fluxes
Author(s) -
Boutin J.,
Etcheto J.,
Merlivat L.,
Rangama Y.
Publication year - 2002
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2001gl013872
Subject(s) - flux (metallurgy) , environmental science , wind speed , atmospheric sciences , outgassing , climatology , satellite , range (aeronautics) , correlation coefficient , meteorology , geology , physics , mathematics , chemistry , statistics , materials science , organic chemistry , astronomy , composite material
We examine the consequences of using four exchange coefficient versus wind speed parameterisations on the air‐sea CO 2 flux estimation, using one year of satellite wind speed measurements at global scale. Estimates of the global net CO 2 flux to the ocean vary from 1.2 to 2.7 GtC yr −1 . Additionnaly, we show 1) that the relative importance of outgassing and absorption fluxes is dependent on the form of the relationships due to a correlation between the direction of the flux and wind speed and 2) that differences on global net air‐sea flux deduced from different K parameterisations are primarily due to parameterisation differences in the wind speed range between 4 and 17 ms −1 .