Ocean Surface Carbon Dioxide Fugacity Observed from Space

Type Report
Date 2014-09
Language English
Ref. JPL Publication 14-15
Other localization http://hdl.handle.net/2014/45464
Author(s) Liu W. Timothy1, Xie Xiaosu1
Publisher Jet Propulsion Laboratory, National Aeronautics and Space Administration

We have developed and validated a statistical model to estimate the fugacity (or partial pressure) of carbon dioxide (CO2) at sea surface (pCO2sea) from space-based observations of sea surface temperature (SST), chlorophyll, and salinity. More than a quarter million in situ measurements coincident with satellite data were compiled to train and validate the model. We have produced and made accessible 9 years (2002–2010) of the pCO2sea at 0.5 degree resolutions daily over the global ocean. The results help to identify uncertainties in current JPL Carbon Monitoring System (CMS) model-based and bottom-up estimates over the ocean. The utility of the data to reveal multi-year and regional variability of the fugacity in relation to prevalent oceanic parameters is demonstrated.

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