20th Century Reanalysis version 3 Early Evaluation Task Force
Home page for 20CRv3 Early Evaluation Task Force
As part of the international Atmospheric Circulation Reconstructions over the Earth (ACRE) initiative, NOAA and CIRES have utilized US Department of Energy supercomputers to produce this latest 4-dimensional atmospheric reanalysis dataset using an 80 member Ensemble Kalman Filter algorithm and analyzing only surface pressure observations. Its global fields are output every 3 hours on approximately 0.7 degree horizontal resolution grids with up to 64 vertical levels.
Most of this data is now public (see http://go.usa.gov/XTd).
The NOAA-CIRES-DOE Twentieth Century Reanalysis Project version 3 used resources of the National Energy Research Scientific Computing Center managed by Lawrence Berkeley National Laboratory which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 and used resources of NOAA's Remotely Deployed High Performance Computing Systems.
Papers using the NOAA-CIRES-DOE Twentieth Century Reanalysis Project version 3 dataset are requested to include the following text in their acknowledgments: "Support for the Twentieth Century Reanalysis Project version 3 dataset is provided by the U.S. Department of Energy, Office of Science Biological and Environmental Research (BER), by the National Oceanic and Atmospheric Administration Climate Program Office, and by the NOAA Earth System Research Laboratory Physical Sciences Division.”
20CRv3 system details