Release of SOCAT Version 4 – the first annual release using automated data upload

The Surface Ocean CO2 Atlas (SOCAT, is a synthesis activity by the international marine carbon research community (>100 contributors). SOCAT version 4 has 18.5 million quality-controlled, surface ocean fCO2 (fugacity of carbon dioxide) observations with an accuracy of better than 5 μatm from 1957 to 2015 for the global oceans and coastal seas. Automation of data upload and initial data checks speeds up data submission and allows annual releases of SOCAT from version 4 onwards. SOCAT enables quantification of the ocean carbon sink and ocean acidification and evaluation of ocean biogeochemical models. SOCAT represents a milestone in research coordination, data access, biogeochemical and climate research and in informing policy.

The SOCAT website ( allows download of the synthesis and gridded products for version 4 (4th button left hand side).

Next week the site will also provide access to the online viewers for version 4, to be followed by access to individual data set files.

Next annual release:

Submission of data for version 5 ends 15 January 2017.

Quality control for version 5 ends 31 March 2017.

More information.




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