[Dart-users] Non-backwards compatible update to WRF model_mod

Nancy Collins nancy at ucar.edu
Mon Jan 12 16:13:57 MST 2009


dear dart users --

for those who run with the WRF model, i have just committed three
updated files to the trunk of the subversion repository.  they are:

 $DART/models/wrf/model_mod.f90
 $DART/models/wrf/WRF_DART_utilities/wrf_data_module.f90
 $DART/models/wrf/WRF_DART_utilities/dart_tf_wrf.f90

this update moves the 2d TSK (skin temperature) field from the list
of wrf fields which are always present, to only being present if
soil_data is .true. in the namelist.  this addresses degraded results
in the wrf runs when the TSK field was getting updated without
the rest of the soil variables.

after you update your dart distribution the next time, you will have to
regenerate your initial condition and restart files, because the old
state vector layout is now different from the updated code.

if you do run with old restart/ic files, unfortunately you will probably
not get a helpful error message.  given the format of the existing restart
files, there is little we can do to catch this case.   it is certainly 
on our
to-do list to make a more robust restart file format, but for now, just
keep in mind that if your wrf/dart run fails at the time it's reading
an initial condition file, this is probably the cause.

this update has been tested by many wrf/dart users, but as always,
if you have problems, please contact me (nancy at ucar.edu).

thanks -
nancy



More information about the Dart-users mailing list