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The Hurricane WRF v4.0a public release will have reduced capabilities due to format and library changes impacting input datasets. Starting in January 2021, an update was made to the bufrlib version, impacting input data for data assimilation. Additionally, when GFSv16 becomes operational (expected March 2021), output will be in netcdf format, which is not supported in HWRFv4.0a. Only use of grib2 data will be supported. Implications of these changes are that HWRFv4.0a cannot run with data assimilation or vortex initialization. Historical cases may still be run using legacy input data formats.
The Developmental Testbed Center will support the use of the system with the following capabilities:
[config]
# No data assimilation
run_gsi=no
# No Ensemble data assimilation
run_ensemble_da=no
# Run with GRIB2 initial condition
gfsinit_type=1
# Disable vortex relocation
run_relocation=no
[pom]
# Get SST from GFS GRIB2 files
gfssst_type=1
