Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4537777 | Deep Sea Research Part II: Topical Studies in Oceanography | 2009 | 10 Pages |
Abstract
Observations of the surface-water fugacity of carbon dioxide (fCO2sw) measured during 2005 in the subpolar North Atlantic Ocean (58-62°N, 10-40°W) were used together with in situ ocean data and remotely sensed data to develop algorithms to estimate fCO2sw. Based on multiple regression we found that sea-surface temperature (SST), mixed-layer depth (MLD), and chlorophyll a (chl a) contributed significantly to the fit. Two algorithms were developed for periods depending on the presence of chl a data. The correlation coefficient (r2) and the root-mean-square deviation (rms) for the best fit in the period when chl a was observed (20 March-15 October) were 0.720 and ±10.8 μatm, respectively. The best fit for the algorithm for the period when no chl a was present (16 October-19 March) resulted in a r2 of 0.774 and a rms of ±5.6 μatm. Based on these algorithms we estimated seasonal fields of fCO2sw and the air-sea CO2 flux. The estimated net annual CO2 sink was 0.0058 Gt C yrâ1 or 0.6 mol C mâ2 yrâ1.
Related Topics
Physical Sciences and Engineering
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Authors
Melissa Chierici, Are Olsen, Truls Johannessen, Joaquin Trinañes, Rik Wanninkhof,