The NCEP/NCAR Reanalysis is an atmospheric reanalysis produced by the National Centers for Environmental Prediction (NCEP) and the National Center for Atmospheric Research (NCAR). It is a continually updated globally gridded data set that represents the state of the Earth's atmosphere, incorporating observations and numerical weather prediction (NWP) model output from 1948 to present.

Accessing the data

The data is available for free download from the NOAA Earth System Research Laboratory[1] and NCEP.[2] It is distributed in Netcdf and GRIB files, for which a number of tools and libraries exist. It is available for download through the NCAR CISL Research Data Archive on the NCEP/NCAR Reanalysis main data page.[3]

Uses

  • Initializing a smaller scale atmospheric model
  • Climate assessment

Subsequent updates

Since then NCEP-DOE Reanalysis 2[4] and the NCEP CFS Reanalysis[5] are released. The former focuses in fixing existing bugs with the NCEP/NCAR Reanalysis system – most notably surface energy and usage of observed precipitation forcing to the land surface, but otherwise uses a similar numerical model and data assimilation system. The latter is based on the NCEP Climate Forecast System.[6]

See also

References

  1. ↑ "NCEP/NCAR Reanalysis". NOAA. Archived from the original on 11 December 2008. Retrieved 20 November 2008.
  2. ↑ "NCEP/NCAR Reanalysis". NOAA. Archived from the original on 27 May 2010. Retrieved 10 April 2010.
  3. ↑ "NCEP/NCAR Reanalysis". NCAR. Retrieved 21 April 2015.
  4. ↑ Kanamitsu M., W. Ebisuzaki, J. Woollen, S-K Yang, J. J. Hnilo, M. Fiorino, G. L. Potter: 2002. Bull. Amer. Meteor. Soc., 83:11, 1631–1643
  5. ↑ S. Saha, and coauthors, 2010: The NCEP Climate Forecast System Reanalysis. Bull. Amer. Meteor. Soc., 91:8, 1015–1057.
  6. ↑ S. Saha, and coauthors , 2006 : The NCEP Climate Forecast System. J. Climate, Vol. 19, No. 15, pages 3483.3517.

Further reading

  • Kistler, R., E. Kalnay, W. Collins, S. Saha, G. White, J. Woollen, M. Chelliah, W. Ebisuzaki, M. Kanamitsu, V. Kousky, H. van den Dool, R. Jenne, and M. Fiorino, 2001: The NCEP-NCAR 50-Year Reanalysis: Monthly Means CD-ROM and Documentation. Bull. Amer. Meteor. Soc., 82, 247–268.
  • Kalnay, E., M. Kanamitsu, R. Kistler, W. Collins, D. Deaven, L. Gandin, M. Iredell, S. Saha, G. White, J. Woollen, Y. Zhu, M. Chelliah, W. Ebisuzaki, W. Higgins, J. Janowiak, K. C. Mo, C. Ropelewski, J. Wang, A. Leetmaa, R. Reynolds, R. Jenne, and D. Joseph, 1996: The NCEP/NCAR 40-Year Reanalysis Project". Bull. Amer. Meteor. Soc., 77, 437–471.
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