Ensemble Kalman Filter System (EnKF) | Download

GSI/EnKF System

The Community GSI V3.7 and EnKF V1.3 was released on 11/07/2018 and is the last the planned official release supported by the DTC and offered for download here. (NOTE: The GSI V3.7 and EnKF V1.3 does not build with any of the Intel v19 compilers. Please use v18 or earlier to compile the code.)  

As of May 2020 there is also a community GSI/EnKF github fork of the master branch of GSI which contains the latest updates to GSI/EnKF.

Observation Resources

The GSI/EnKF requires specific data formats for observations to be assimilated:

• Conventional observations (including satellite derived data, e.g., satellite wind):
  PrepBUFR format (NCEP featured BUFR format)
• Satellite radiance data, GPS radio occultation data, Radar observations: 
  BUFR format

Descriptions about the data formats and links to some data resources are provided here.

External Libraries Needed To Build GSI/EnKF

The follow system/libraries are not in GSI/EnKF release package but needed for GSI/EnKF building:

• • A recent version of the CMake build system.
  • NetCDF: (note: NetCDF libraries need to be built with the same compiler as WRF and GSI/EnKF)
  • LAPACK and BLAS libraries may be needed. Check with your system administrator to see if local versions of these libraries already exist on your system.

For questions regarding the use of GSI/EnKF please see the GSI/EnKF User Support page.