A 30 years observation-based global monthly gridded sea surface pCO2 product from 1982 through 2011

by P. Landschützer,1, N. Gruber1, D.C.E. Bakker2

1Institute of Biogeochemistry and Pollutant Dynamics, Swiss Federal Institute of Technology (ETH), Zürich, Switzerland
2Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich Research Park, Norwich, UK

dataDatabase Files        PDF file README Document (PDF format)        PDF file Landschützer et al. 2015 (link to Science article)       



The observation-based pCO2 fields were created using a 2-step neural network technique. In a first step, the global ocean is divided into 16 biogeochemical provinces using a self organizing map. In a second step, the non-linear relationship between variables known to drive the surface ocean carbon system and gridded observations from the SOCATv2 dataset (Bakker et al. 2014) is reconstructed using a feed-forward neural network within each province separately. The final product is then produced by projecting these driving variables, i.e., surface temperature, chlorophyll, mixed layer depth, and atmospheric CO2 onto oceanic pCO2 using these non-linear relationships. This results in monthly pCO2 fields at 1°x1° resolution covering the entire globe with the exception of the Arctic Ocean and few marginal seas. The air-sea CO2 flux is then computed using a standard bulk formula. More details can be found in Landschützer et al. 2013 and Landschützer et al. 2014. Compared to Landschützer et al. 2014 we now have extended the time series back in the past from 1982 through 2011. More details can be obtained from Landschützer et al. 2015 and the manuscript supplement.

This product is free to be used. Please cite this data set as:
Landschützer, P., N. Gruber and D.C.E. Bakker. 2015. A 30 years observation-based global monthly gridded sea surface pCO2 product from 1982 through 2011. http://cdiac.ornl.gov/ftp/oceans/SPCO2_1982_2011_ETH_SOM_FFN. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, US Department of Energy, Oak Ridge, Tennessee. doi: 10.3334/CDIAC/OTG.SPCO2_1982_2011_ETH_SOM-FFN

Please cite the method as:
Landschützer, P., N. Gruber, F. A. Haumann, C. Rödenbeck, D.C.E. Bakker, S. van Heuven, M. Hoppema, N. Metzl, C. Sweeney, T. Takahashi, B. Tilbrook, and R. Wanninkhof. The reinvigoration of the Southern Ocean carbon sink, Science, 2015, 349, 1221-1224. doi: 10.1126/science.aab2620

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