We would like to let you know that NOAA National Centers for Environmental Information (NCEI) Ocean CArbon Data System (OCADS), formerly CDIAC-Oceans, has just published two new data products. First, there is a new version of the Lamont–Doherty Earth Observatory Global Ocean Surface Water Partial Pressure of CO₂ Database (LDEOv2016) available for download HERE. Second, OCADS/NCEI also published the Neutrally Averaged Radiocarbon Climatology data set by Casimir de Lavergne et al., from University of New South Wales, Australia, available HERE.

LDEOv2016: Global Ocean Surface Water Partial Pressure of CO₂ Database: Measurements Performed During 1957-2016 (Version 2016) (NCEI Accession 0160492)

Approximately 10.8 million measurements of surface water pCO₂ made over the global oceans during 1957-2016 have been processed to make a uniform data file in this LDEO Data base Version 2016. Measurements made in open oceans as well as in coastal waters are included. The data assembled include only those measured using equilibrator-CO₂ analyzer systems, and have been quality-controlled based upon the stability of the system performance, the reliability of calibrations for CO2 analysis and the internal consistency of data. The global pCO₂ data set is available free of charge as a numeric data package (NDP) from the OCADS: https://www.nodc.noaa.gov/ocads/oceans/LDEO_Underway_Database/. The NDP consists of the oceanographic data files and this printed documentation, which describes the procedures and methods used to obtain the data.

Neutrally Averaged Radiocarbon Climatology (NCEI Accession 0166518) 

This gridded product consists of a global (80°S-62°N) climatological estimate of radiocarbon content (∆¹⁴C) at half-degree horizontal resolution, provided both on neutral density and depth surfaces. It is based on the GLODAPv2 data compilation (Key et al. 2016, Olsen et al. 2016) and the neutral density (γⁿ; Jackett and McDougall 1997) field of the WOCE global hydrographic climatology (Gouretski and Koltermann 2004). The mapping has been performed separately along 140 neutral density surfaces, using the distance look-up system described at http://www.marine.csiro.au/~dunn/cars2009/DLU/, following the procedure described in de Lavergne et al. (2017).

More information and product download at: https://www.nodc.noaa.gov/ocads/oceans/DC14_climate.html

References

• Key, R. M. et al., 2016. Global Ocean Data Analysis Project, Version 2 (GLODAPv2), ORNL/CDIAC- 162, NDP-093, Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, US Department of Energy, Oak Ridge, Tennessee.
• Olsen, A. et al., 2016. The global ocean data analysis project version 2 (GLODAPv2) - an internally consistent data product for the world ocean. Earth Syst. Sci. Data 8, 297-323. doi:10.5194/essd-8-297- 2016
• Jackett, D. R. and McDougall, T. J., 1997. A neutral density variable for the world's oceans. J. Phys. Oceanogr. 27, 237-263. doi:10.1175/1520-0485(1997)027<0237:ANDVFT>2.0.CO;2
• Gouretski, V. V. and Koltermann, K. P. , 2004. WOCE global hydrographic climatology: a technical report. Berichte des Bundesamtes für Seeschifffahrt und Hydrographie 35/2004, 52 pp. http://icdc.cen.uni-hamburg.de/1/daten/ocean/woce-climatology.html