Underflow and overflow errors after including new gfrac, land cover, and LAI data

[laurizio]

When running geogrid.exe and ungrib.exe, no error messages are displayed. When visualizing the output data from geogrid, the information seems consistent and as expected. However, when I execute metgrid.exe, the following warning appears:
"Processing 2023-12-18_12 FILE
Note: The following floating-point exceptions are signalling: IEEE_OVERFLOW_FLAG IEEE_UNDERFLOW_FLAG IEEE_DENORMAL
Note: The following floating-point exceptions are signalling: IEEE_OVERFLOW_FLAG IEEE_UNDERFLOW_FLAG IEEE_DENORMAL
Note: The following floating-point exceptions are signalling: IEEE_OVERFLOW_FLAG IEEE_UNDERFLOW_FLAG IEEE_DENORMAL
Note: The following floating-point exceptions are signalling: IEEE_OVERFLOW_FLAG IEEE_UNDERFLOW_FLAG IEEE_DENORMAL
Note: The following floating-point exceptions are signalling: IEEE_OVERFLOW_FLAG IEEE_UNDERFLOW_FLAG IEEE_DENORMAL
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! Successful completion of metgrid. !
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Note: The following floating-point exceptions are signalling: IEEE_OVERFLOW_FLAG IEEE_UNDERFLOW_FLAG IEEE_DENORMAL


Despite the message stating "Successful completion of metgrid", these warnings appear repeatedly.

Could this issue be related to the fact that I converted the gfrac, land cover, and LAI data from GeoTIFF using Float32 instead of Int32? I used the convert_geotiff tool for this conversion.

I have attached the ncdump output from the resulting file (met_em.d02.2023-12-18_06-00-00.txt) for evaluation.

Can I ignore this warning, or could it cause problems when I run real.exe and wrf.exe?

 

[kwerner]

Hi,
Take a look at this previous post that discusses the issue. It looks like you can probably continue without worrying about the warning. If you DO run into any errors with real or wrf, then we can revisit.