SOCAT version 2019

Before using SOCAT data products, please read the Fair Data Use Statement

Data Access

SOCAT version 2019 data products are available in a variety of formats:

Interactive viewers

Use the Interactive Viewers from the Live Access Server to explore and download gridded or non-gridded data following selected criteria (region, year, platform, etc.). Making maps and property plots is straight forward and a good way to to get a quick overview of the data collection.

Synthesis and gridded files

Global and regional synthesis files, as well as gridded files, are available as text files and netcdf, respectively, via the NOAA National Centers for Environmental Information. Matlab code is available for reading these text files.

Synthesis files Main source (NCEI) GEOMAR Mirror (Zipped)
All data 4.1 Gb 618Mb
Arctic Data 227 Mb 33 Mb
Coastal Data 1.7 Gb 262 Mb
Indian Ocean Data 47 Mb 5 Mb
North Atlantic 351 Mb 57 Mb
North Pacific Data 115 Mb 19 Mb
Southern Ocean Data 1.0 Gb 158 Mb
Tropical Atlantic Data 175 Mb 28 Mb
Tropical Pacific Data 393 Mb 60 Mb
Flag E Data 262 Mb 38 Mb
Instructions for reading synthesis files 260 Kb
Matlab code for reading synthesis files 20 Kb
Gridded files Main source (NCEI) GEOMAR Mirror (Zipped)
Monthly gridded 3.5 Gb 31 Mb
Yearly gridded 194 Mb 9 Mb
Decadal gridded 20 Mb 3 Mb
Quarter-degree gridded monthly coastal 412 Mb 189 Mb
Matlab code for reading gridded files 7 Kb
Individual data sets in text format

Individual data set files are archived in Pangaea and can be downloaded in text format.

Text files Main source (Pangaea) BCDC Mirror
All data sets 2.63 Gb 2.63 Gb

Metadata overview
List of new and updated data sets


Ocean Data View format

The synthesis and gridded files are available in Ocean Data View (ODV) format from the ODV website.

ODV SOCAT Collection


More description on SOCAT version 2019 can be found in the version 2019 release poster.
For a detailed description of data products, file formats and tools, see:

Bakker et al. (2016) A multi-decade record of high quality fCO₂ data in version 3 of the Surface Ocean CO₂ Atlas (SOCAT). Earth System Science Data, 8: 383-413. doi:10.5194/essd-8-383-2016
Bakker et al. (2014) An update to the Surface Ocean CO₂ Atlas (SOCAT version 2). Earth System Science Data 6: 69-90. doi:10.5194/essd-6-69-2014
Pfeil et al. (2013) A uniform, quality controlled Surface Ocean CO₂ Atlas (SOCAT), Earth Syst. Sci. Data, 5, 125-143. doi:10.5194/essd-5-125-2013
Sabine et al. (2013) Surface Ocean CO2 Atlas (SOCAT) gridded data products. Earth System Science Data 5: 145-153. doi:10.5194/essd-5-145-2013


Recalculation in SOCAT version 2019 took place using Ferret scripts, based on Matlab codes by Are Olsen (University of Bergen/Bjerknes Centre for Climate Research). The Matlab codes can be obtained here.


For SOCAT version 2019 we would like to thank all SOCAT data contributors, quality controllers, and members of the automation team:

Bakker, Dorothee C. E.; Lauvset, Siv K.; Wanninkhof, Rik; O’Brien, Kevin M.; Olsen, Are; Pfeil, Benjamin; Castaño-Primo, Rocío; Currie, Kim; Jones, Stephen; Karlsen, Maren K.; Kozyr, Alex; Metzl, Nicolas; Nakaoka, Shin-Ichiro; Pierrot, Denis; Smith, Karl; Sullivan, Kevin; Sutton, Adrienne; Sweeney, Colm; Takahashi, Taro; Telszewski, Maciej; Tilbrook, Bronte; Wada, Chisato; Akl, John; Alin, Simone R; Andersson, Andreas; Atamanchuk, Dariia; Becker, Meike; Benoit-Cattin-Breton, Alice; Burger, Eugene; Collins, Andrew; Corredor, Jorge; Cosca, Cathy; Cronin, Margot; Cross, Jessica; De Carlo, Eric; Feely, Richard A.; Gkritzalis, Thanos; Glockzin, Michael; Greenwood, Naomi; Gutekunst, Sören; Hartman, Susan E.; Herndon, Julian; Ho, David T.; Hunt, Christopher W.; Ibanhez, Severino; Johannessen, Truls; Kitidis, Vassilis; Lee, Charity M.; Lefèvre, Nathalie; Lo Monaco, Claire; Manke, Ansley B.; Mickett, John; Millero, Frank J.; Monacci, Natalie; Morell, Julio M.; Munro, David R.; Neill, Craig; Newberger, Timothy; Newton, Jan A.; Noh, Jae-Hoon; Nojiri, Yukihiro; Ohman, Mark; Ólafsdóttir, Sólveig Rósa; Omar, Abdirahman M.; Ono, Tsuneo; Papakyriakou, Tim; Park, Geun-Ha; Pearce, David J.; Plüddemann, Albert J.; Price, Nichole; Rehder, Gregor; Sakurai, Keizo; Salisbury, Joe; Schlitzer, Reiner; Send, Uwe; Skjelvan, Ingunn; Sutherland, Stewart C.; Tadokoro, Kazuaki; Tanhua, Toste; Tomlinson, Michael; Trull, Tom; Vandemark, Doug; Wallace, Douglas W. R.; Weller, Robert A.; Woosley, Ryan J.


SOCAT quality control is carried out by regional working groups with a global group for coordination.
The groups for SOCAT version 2019 can be found here.