Problem Running real.exe Using GFS Real-Time Data From 1200
UTC 9/25/07 to 1200 UTC 10/10/07 (posted 10/01/07, and updated on 11/29/07)
Problem: Program real.exe may
abnormally stop due to soil temp and moisture error. This happens
for GFS real-time, Grib data from 1200 UTC 9/25/07 to 1200 UTC 10/10/07.
Solution: Download this updated
METGRID.TBL.gfsfix,
and replace METGRID.TBL in WPS/metgrid/ (be sure to save the old
copy). Rerun metgrid.exe with the new METGRID.TBL file.
Note that NCEP is aware of this problem and
is taking steps to fix the data.
Problem Running metgrid.exe Using NARR Data (posted 3/15/07)
Problem: You may run into a
problem with metgrid.exe when using the supplied Vtable.NARR to
degrib the data.
Solution: Download this updated
Vtable.NARR, and place
it in WPS/ungrib/Variable_Tables/ directory. Rerun ungrib.exe.
Broken ungrib Code in WPS TAR File (posted 2/21/07)
Problem: If you have downloaded
a WPS tar file between Feb 12 - Feb 21, 2007, you should redownload
it immediately. The code for ungrib was broken in the tar file.
Sorry for any inconvenience it may have caused.
Solution: Get the updated WPS
tar file.
Compiling and Running WPS Using g95 Compiler (posted 2/14/07)
Problem: The g95 compile option
provided in the earlier tar file would not allow geogrid and metgrid
to compile. Even though it may compile ungrib, it gives a runtime
error (segmentation fault).
Solution: Get the updated WPS
tar file.
Problem with using NCEP 2 Reanalysis Data In WPS (posted 2/14/07)
Problem: When using both surface
and upperair data from NCEP 2 Reanalysis, the ungrib code in the
previous WPS tar file may not correctly degrib the data.
Solution: Get the updated WPS
tar file. Also use Vtable.NCEP2.
To use this dataset, one must get 3D/upper air
data from pgb* file, and surface data from flx* and dg3* files.
Note that some surface fields from this dataset is not available
in the ft00 file. The options are to use the +1 hour forecast
surface data (in ft00 file), or 6 hour forecast data from data
file available at 6 hours ago. If you choose to use the 6 hour
forecast data, get the file, and run ungrib as usual. If you choose
to use the 1 hour forecast, then one must run ungrib twice, once
with the requested times, such at 00, 06, 12 hours, etc., and
once for 01, 07, 13 hours etc.. One can then change the date string
in the surface data output to match the rest of the data.
Problem with using NNRP Data In WPS (posted 1/10/07) (updated
2/14/07)
Note: If you download the latest
version of WPS tar file, then you will not need to use the fix
posted below.
Problem: When using surface
data from NNRP (NCEP/NCAR Reanalysis or Reanalysis II), an error
may occur when running metgrid.exe: ERROR: Gaussian_latitude_computation.
This is a bug in ungrib to degrib Gaussian data.
Solution: Download gridcode.F90.fix
to WPS/ungrib/src/ directory, rename it to gribcode.F90. Recompile.
Rerun ungrib.exe for the NNRP surface data.
