SOCAT Version 6

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

Data Access

SOCAT version 6 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) BCDC Mirror (Zipped)
All data 3.6 Gb 560Mb
Arctic Data 194 Mb 28 Mb
Coastal Data 1.5 Gb 233 Mb
Indian Ocean Data 47 Mb 5 Mb
North Atlantic 337 Mb 55 Mb
North Pacific Data 105 Mb 17 Mb
Southern Ocean Data 949 Mb 141 Mb
Tropical Atlantic Data 172 Mb 28 Mb
Tropical Pacific Data 363 Mb 55 Mb
Flag E Data 189 Mb 28 Mb
Instructions for reading synthesis files 259 Kb
Matlab code for reading synthesis files 20 Kb
Gridded files Main source (NCEI) BCDC Mirror (Zipped)
Monthly gridded 3.3 Gb 30 Mb
Yearly gridded 190 Mb 8 Mb
Decadal gridded 20 Mb 3 Mb
Quarter-degree gridded monthly coastal 400 Mb 181 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 816 Mb 816 Mb

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.


More description on SOCAT Version 6 can be found in the V6 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 V6 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 V6 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; Castaño-Primo, Rocío; Currie, Kim I.; Jones, Stephen D.; Landa, Camilla S.; Metzl, Nicolas; Nakaoka, Shin-Ichiro; Nojiri, Yukihiro; Nonaka, Isao; O’Brien, Kevin M.; Olsen, Are; Pfeil, Benjamin; Pierrot, Denis; Schuster, Ute; Smith, Karl; Sullivan, Kevin; Sutton, Adrienne; Tilbrook, Bronte; Alin, Simone; Becker, Meike; Benoit-Cattin-Breton, Alice; Bott, Randy; Bozec, Yann; Bozzano, Roberto; Burger, Eugene; Burgers, Tonya; Cai, Wei-Jun; Chen, Liqi; Chierici, Melissa; Corredor, Jorge; Cosca, Cathy; Cross, Jessica; Dandonneau, Yves; De Carlo, Eric; Dietrich, Colin; Else, Brent; Emerson, Steven; Farías, Laura; Fransson, Agneta; Garreaud, René D.; Gkritzalis, Thanos; Glockzin, Michael; González-Dávila, Melchor; Gregor, Luke; Hartman, Susan E.; Hermes, Rudolf; Hoppema, Mario; Howden, Stephan; Hunt, Christopher W.; Hydes, David; Ibanhez, J. Severino P.; Kitidis, Vassilis; Körtzinger, Arne; Kozyr, Alex; Kuwata, Akira; Lampitt, Richard; Lefèvre, Nathalie; Lo Monaco, Claire; Maenner, Stacy M.; Manke, Ansley B.; Manzello, Derek; McGillis, Wade; Mickett, John; Monteiro, Pedro M.S.; Morell, Julio; Morrison, John (Ru); Mucci, Alfonso; Munro, David R.; Musielewicz, Sylvia; Negri, Rubén; Newberger, Timothy; Newton, Jan; Noakes, Scott; O’Brien, Chris; Ólafsdóttir, Sólveig Rósa; Ólafsson, Jón S.; Ono, Tsuneo; Osborne, John; Ouyang, Zhangxian; Padín, Xose Antonio; Papakyriakou, Tim; Pluddemann, Albert J.; Rehder, Gregor; Sabine, Christopher L.; Sakurai, Keizo; Salisbury, Joe; Santana-Casiano, Juana Magdalena; Schlitzer, Reiner; Schneider, Bernd; Send, Uwe; Skjelvan, Ingunn; Steinhoff, Tobias; Sulpis, Oliver; Sutherland, Stewart C.; Sweeney, Colm; Tadokoro, Kazuaki; Takahashi, Taro; Telszewski, Maciej; Thomas, Helmuth; Tomlinson, Michael; Trull, Tom; Valdimarsson, Héðinn; van Heuven, Steven; Vandemark, Doug; Wada, Chisato; Wallace, Douglas W.R.; Watson, Andrew J.; Weller, Robert A.; Xu, Suqing.


SOCAT quality control is carried out by regional working groups with a global group for coordination.
The groups for SOCAT Version 6 can be found here.