[Dart-users] (corrected) WRF-related updates to the DART subversion repository

Nancy Collins nancy at ucar.edu
Fri Jan 21 11:13:42 MST 2011


the original note had the name of the new namelist wrong.   appended
here is the corrected information.  it's &wrf_to_dart_nml that's new.
sorry for the multiple copies.     n.

On 1/21/11 11:04 AM, Nancy Collins wrote:
> hello dart users,
>
> this note is of interest to WRF/DART users.
>
> i've just committed updates to the following files:
>
>       DART/trunk/models/wrf/WRF_DART_utilities/dart_to_wrf.f90
>       DART/trunk/models/wrf/WRF_DART_utilities/dart_to_wrf.html
>       DART/trunk/models/wrf/WRF_DART_utilities/dart_to_wrf.nml
>       DART/trunk/models/wrf/WRF_DART_utilities/wrf_to_dart.f90
>       DART/trunk/models/wrf/WRF_DART_utilities/wrf_to_dart.nml
>       DART/trunk/models/wrf/model_mod.html
>       DART/trunk/models/wrf/work/input.nml
>
>
> the biggest change here is that there is now a namelist option to print out
> the data min/max values for each variable (U,V,W, etc) as the converters
> move the data between WRF NetCDF files and the DART state vector format
> files.
>
> if the model gets into an unstable regime and produces very large values
> for some state variables, turning on the 'print range' option may help
> pinpoint when things start going wrong.   the 'debug' option includes
> all the data ranges plus more detailed information about the lat/lon extent,
> the grid sizes, etc and may be useful when setting up an experiment for
> the first time or when making sure the wrfinput file matches what you
> intend to be running.
>
> the one functional change in the code is that the time associated with an
> updated state vector file used to be copied from the file created to
> tell the wrf model advance what time to advance to (wrf.info) and not from
> the wrf output file itself.  thus there was no way for the date in the
> updated state vector to indicate a failed model advance or non-updated
> wrf out files. the model time is now copied directly from the wrf
> netcdf files.
>
> a non-backwards-compatible change is that the wrf_to_dart converter
> now requires a new namelist "&wrf_to_dart_nml" in the input.nml file.
> the example input.nml which was committed with this update includes
> this new namelist.  it will need to be copied to any other input.nml
> files you are using with your experiments.
>
> the default behavior of the converters remains the same as before to
> minimize the volume of output.  you will have to enable the
> 'print_data_ranges' item to get the new additional output.
>
> as always, contact me if you've got any questions.
> nancy
>
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