The following organizations provide 3D ocean DIC/TALK data from the era of reanalysis (which generally refers to the period after 1979): 1. NOAA/ESRL Physical Sciences Division: http://www.esrl.noaa.gov/psd/data/gridded/data.noaa.reanalysis.html

2. The University of Maryland (GOLD) Data Set: https://gold.ccr.columbia.edu/GOLD/

3. The Japan Agency for Marine-Earth Science and Technology: http://www.jamstec.go.jp/esc/ers/de/home/

4. The International Comprehensive Ocean Atmosphere Data Set: http://icoads.noaa.gov/Products/icoads_gridded_datasets.html

5. The National Centers for Environmental Prediction (NCEP)/National Center for Atmospheric Research (NCAR) Reanalysis Project: https://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.html