At this time (2014/09/29), the NCEP/NCAR Reanalysis is not being updated at PSD as NCEP has halted their distribution. Any of our products or web-tools that use this data will be impacted. Data will be updated when it becomes available. We have no further information as to when that might be.

We will be transitioning the data files from netCDF3 to netCDF4-classic format. As a result, the files will be compressed instead of being packed with a scale and offset. As with any netCDF4 file, the NetCDF library will perform the uncompression. We expect the files to be read faster, depending on the application you are using. Values may differ slightly because of precision issues. Please let us know if you run into any problems after first reading our netCDF4 doc . We are also changing the time acces to use 1800 as a reference date for udunits. This should prove easier for users.

The NCEP/NCAR Reanalysis Project

at the NOAA/ESRL Physical Sciences Division

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 PSD for this set of data products.

Links to other NCEP/NCAR Reanalysis sites:

Links to Other Reanalysis Projects

For more information, contact:
Physical Sciences Division: Data Management
325 Broadway
Boulder, CO 80305-3328