SOCAT: Surface Ocean CO2 Atlas

SOCAT (Surface Ocean CO2 Atlas)  represents an effort to "provide a comprehensive, publicly available, regularly updated, global data set of marine surface CO2, which had been subject to quality control (QC)." The data sets are comprised of observations (ship track) and gridded data.

Key Strengths:

  • Quality controlled

Years of Record

1970/01 to 2007/12
temporal metadataID:



Climatology | Monthly | Annual


Spatial Resolution

0.25x0.25 | 1x1

Ocean or Land

Ocean Only

Vertical Levels

Earth system components and main variables

Data Access: Please Cite data sources, following the data providers' instructions.

Key Figures

Click the thumbnails to view larger sizes



SOCAT May climatology. (Climate Data Guide; D. Shea)
SOCAT 2007 yearly file. (Climate Data Guide; D. Shea)

Cite this page

National Center for Atmospheric Research Staff (Eds). Last modified 21 Aug 2014. "The Climate Data Guide: SOCAT: Surface Ocean CO2 Atlas ." Retrieved from

Acknowledgement of any material taken from this page is appreciated. On behalf of experts who have contributed data, advice, and/or figures, please cite their work as well.