Hurricane WRF (HWRF) | FAQ's

First, refer to the documentation on this website. If that doesn't answer your question, then write to HWRF helpdesk.

Please refer to our data FAQ.

Yes. The GFS ensemble is used as input to GSI during data assimilation. When the GFS ensemble is available, GSI runs in ensemble-variational hybrid data assimilation mode and uses flow-dependent information to create the background error covariance matrix. Conversely, when the GFS ensemble is not available, GSI uses the previously generated static background error covariance.

Please refer to the HWRF v4.0 Users Guide (Appendix B: Example of Computational Resources and Notes for NCAR-Cheyenne) for recommended modules and resources to run on Cheyenne.