We have transitioned the data files from netCDF3 to netCDF4-classic format on Monday Oct 20th, 2014.

This page points you to information on the NCEP/NCAR Reanalysis project and the implementation of a netCDF-based, Internet-accessible, data service at NOAA/ESRL PSL for this set of data products.

• The 6-hourly and daily data currently available on-line.
• The monthly and other derived data currently available on-line.
• Please read the problem list.

• Status
  • Reanalysis problems list (Dec 17, 2017)
• Inventory/specifications
  • Description of data on-line at PSL (Sep 10, 2021)
• Tips for reading the data files.

Links to other NCEP/NCAR Reanalysis sites:

• NCEP
  • NCEP Environmental Modeling Center Home Page
  • The NCEP Reanalysis Page at NOAA CPC.
  • Reanalysis Model Parameters
  • The Bulletin of the American Meteorological Society article (March 1996) describing the project.
  • Pentad-means of some important NCEP/NCAR Reanalysis variables provide by JIASO at the University of Washington.
• NCAR
  • The NCAR Reanalysis Page
  • The Climate Analysis Section (CAS) at NCAR offers a data catalog which has some NCAR/NCEP Reanalysis products created by CAS.

Links to Other Reanalysis Projects

• Reanalysis.org: A complete link to reanalysis datasets, information, models, etc. Hosted by CU/CIRES.
• NCAR/UCAR Climate Data Guide: Atmospheric reanalysis: overview & comparison tables