English: Estimated annual mean sea surface dissolved inorganic carbon (DIC) for the pre-industrial period (1700s) from the Global Ocean Data Analysis Project v2 (GLODAPv2) climatology. Sources are given below. This field was derived from present day measurements of DIC with the signal of anthropogenic DIC removed using a mathematical technique. It is plotted here using a Mollweide projection (using MATLAB v2013a). Note that the GLODAPv2 climatology is missing data in certain oceanic provinces including the Arctic Ocean, the Caribbean Sea and certain inland seas.
Lauvset, S. K., Key, R. M., Olsen, A., van Heuven, S., Velo, A., Lin, X., Schirnick, C., Kozyr, A., Tanhua, T., Hoppema, M., Jutterström, S., Steinfeldt, R., Jeansson, E., Ishii, M., Perez, F. F., Suzuki, T., and Watelet, S.: A new global interior ocean mapped climatology: the 1° × 1° GLODAP version 2, Earth Syst. Sci. Data, 8, 325-340, https://doi.org/10.5194/essd-8-325-2016, 2016
Key, R.M., A. Olsen, S. van Heuven, S. K. Lauvset, A. Velo, X. Lin, C. Schirnick, A. Kozyr, T. Tanhua, M. Hoppema, S. Jutterström, R. Steinfeldt, E. Jeansson, M. Ishi, F. F. Perez, and T. Suzuki. 2015. Global Ocean Data Analysis Project, Version 2 (GLODAPv2), ORNL/CDIAC-162, NDP-P093. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, US Department of Energy, Oak Ridge, Tennessee. doi: 10.3334/CDIAC/OTG.NDP093_GLODAPv2