Running real.exe

Amadou · Jul 15, 2023

Hi,
I am trying to run real.exe, but it stops with the following error message:

ERROR in psfc: flag_psfc = 0, flag_soilhgt = 0, flag_slp = 0, sfcp_to_sfcp = F

Can someone helps me?

Deleted member 3607 · Jul 17, 2023

Can you rerun the command and attach the following files in a zip folder?

- namelist for wrf and wps
- rsl out files
- rsl error files

Does wps successfully create the met files?

Amadou · Jul 18, 2023

Whatheway said:
Can you rerun the command and attach the following files in a zip folder?

- namelist for wrf and wps
- rsl out files
- rsl error files

Does wps successfully create the met files?

Hi
Yes, wps has successfully created the met files. Please, find attached the requested files for more details.

Cheers

Deleted member 3607 · Jul 18, 2023

Amadou said:
Hi
Yes, wps has successfully created the met files. Please, find attached the requested files for more details.

Cheers

So it looks like you are using ERA5 reanalysis data.

so ERA5 data is split into two seperate files that need to be downloaded and then called seperately in wps.

Since I do not have access to your data source I can't write the specific way to do it but I can show you my WPS commands that I use when I do ERA5.

Bash:

d $WPSDIR
cp -f $CONFIGDIR/pressure.namelist.wps $WPSDIR/namelist.wps
cd $WPSDIR/geogrid
ulimit -s unlimited
ln -sf GEOGRID.TBL.ARW_CHEM GEOGRID.TBL
cd $WPSDIR
mpirun -np 32 ./geogrid.exe


cp -f $CONFIGDIR/pressure.namelist.wps $WPSDIR/namelist.wps
cp -f ungrib/Variable_Tables/Vtable.ERA-interim.pl ./Vtable
./link_grib.csh /home/workhorse/WRFCHEM_Intel/ERA5/Pressure/
./ungrib.exe


cp -f $CONFIGDIR/surface.namelist.wps $WPSDIR/namelist.wps
cp -f ungrib/Variable_Tables/Vtable.ECMWF ./Vtable
./link_grib.csh /home/workhorse/WRFCHEM_Intel/ERA5/Surface/
./ungrib.exe


mpirun -np 32 ./metgrid.exe

# setting namelist.input

Then you have to modify the namelist.wps twice or have two different namelist files to call.

so first you do ERA5 for the pressure (example change to your system)

Code:

&ungrib
 out_format = 'WPS',
 prefix = 'FILE',
/

&metgrid
 fg_name = 'FILE',
 io_form_metgrid = 2,
/

Then do ERA5 for the surface (example change to your system)

Code:

&ungrib
 out_format = 'WPS',
 prefix = 'SFILE',
/

&metgrid
 fg_name = 'SFILE','FILE'
 io_form_metgrid = 2,
/

Amadou · Jul 18, 2023

Whatheway said:
So it looks like you are using ERA5 reanalysis data.

so ERA5 data is split into two seperate files that need to be downloaded and then called seperately in wps.

Since I do not have access to your data source I can't write the specific way to do it but I can show you my WPS commands that I use when I do ERA5.

Bash:

d $WPSDIR cp -f $CONFIGDIR/pressure.namelist.wps $WPSDIR/namelist.wps cd $WPSDIR/geogrid ulimit -s unlimited ln -sf GEOGRID.TBL.ARW_CHEM GEOGRID.TBL cd $WPSDIR mpirun -np 32 ./geogrid.exe cp -f $CONFIGDIR/pressure.namelist.wps $WPSDIR/namelist.wps cp -f ungrib/Variable_Tables/Vtable.ERA-interim.pl ./Vtable ./link_grib.csh /home/workhorse/WRFCHEM_Intel/ERA5/Pressure/ ./ungrib.exe cp -f $CONFIGDIR/surface.namelist.wps $WPSDIR/namelist.wps cp -f ungrib/Variable_Tables/Vtable.ECMWF ./Vtable ./link_grib.csh /home/workhorse/WRFCHEM_Intel/ERA5/Surface/ ./ungrib.exe mpirun -np 32 ./metgrid.exe # setting namelist.input

Then you have to modify the namelist.wps twice or have two different namelist files to call.

so first you do ERA5 for the pressure (example change to your system)

Code:

&ungrib out_format = 'WPS', prefix = 'FILE', / &metgrid fg_name = 'FILE', io_form_metgrid = 2, /

Then do ERA5 for the surface (example change to your system)

Code:

&ungrib out_format = 'WPS', prefix = 'SFILE', / &metgrid fg_name = 'SFILE','FILE' io_form_metgrid = 2, /

I am not sure to have my era5 data in both pressure and surface levels. Please, see attached sample of my data

Deleted member 3607 · Jul 18, 2023

Amadou said:
I am not sure to have my era5 data in both pressure and surface levels. Please, see attached sample of my data

This is where I get my data for ERA5 @Amadou

NCAR RDA Dataset ds633.0 Data Access

NCAR RDA

rda.ucar.edu

The first two reanalysis datasets would need to be downloaded using the method I explained:

Amadou · Jul 19, 2023

Hi,

Whatheway said:
This is where I get my data for ERA5 @Amadou

NCAR RDA Dataset ds633.0 Data Access

NCAR RDA

rda.ucar.edu

The first two reanalysis datasets would need to be downloaded using the method I explained:

Hi,

If I understood you I must first of all, download the data in the directory /home/workhorse/WRFCHEM_Intel/ERA5/Surface/ and /home/workhorse/WRFCHEM_Intel/ERA5/Pressure/

Then link to these directories in the namelist.wps

Whatheway said:
This is where I get my data for ERA5 @Amadou

NCAR RDA Dataset ds633.0 Data Access

NCAR RDA

rda.ucar.edu

The first two reanalysis datasets would need to be downloaded using the method I explained:

Deleted member 3607 · Jul 19, 2023

Amadou said:
Hi,

Hi,

If I understood you I must first of all, download the data in the directory /home/workhorse/WRFCHEM_Intel/ERA5/Surface/ and /home/workhorse/WRFCHEM_Intel/ERA5/Pressure/

Then link to these directories in the namelist.wps

@Amadou

Little hard to explain without knowing your system set up and folder names.

Message me directly and I can see if I have time to do a web call and explain it

Amadou · Jul 19, 2023

Whatheway said:
@Amadou

Little hard to explain without knowing your system set up and folder names.

Message me directly and I can see if I have time to do a web call and explain it

Hi William,

I messaged you in Linkedin

BNishant · Jul 21, 2023

Whatheway said:
So it looks like you are using ERA5 reanalysis data.

so ERA5 data is split into two seperate files that need to be downloaded and then called seperately in wps.

Since I do not have access to your data source I can't write the specific way to do it but I can show you my WPS commands that I use when I do ERA5.

Bash:

d $WPSDIR cp -f $CONFIGDIR/pressure.namelist.wps $WPSDIR/namelist.wps cd $WPSDIR/geogrid ulimit -s unlimited ln -sf GEOGRID.TBL.ARW_CHEM GEOGRID.TBL cd $WPSDIR mpirun -np 32 ./geogrid.exe cp -f $CONFIGDIR/pressure.namelist.wps $WPSDIR/namelist.wps cp -f ungrib/Variable_Tables/Vtable.ERA-interim.pl ./Vtable ./link_grib.csh /home/workhorse/WRFCHEM_Intel/ERA5/Pressure/ ./ungrib.exe cp -f $CONFIGDIR/surface.namelist.wps $WPSDIR/namelist.wps cp -f ungrib/Variable_Tables/Vtable.ECMWF ./Vtable ./link_grib.csh /home/workhorse/WRFCHEM_Intel/ERA5/Surface/ ./ungrib.exe mpirun -np 32 ./metgrid.exe # setting namelist.input

Then you have to modify the namelist.wps twice or have two different namelist files to call.

so first you do ERA5 for the pressure (example change to your system)

Code:

&ungrib out_format = 'WPS', prefix = 'FILE', / &metgrid fg_name = 'FILE', io_form_metgrid = 2, /

Then do ERA5 for the surface (example change to your system)

Code:

&ungrib out_format = 'WPS', prefix = 'SFILE', / &metgrid fg_name = 'SFILE','FILE' io_form_metgrid = 2, / [/QUOTE] While Downloading ERA5 datasets using the subset from NCAR RDA Datasets it is in NETcdF format, How ungrib.exe will able to run it? ungrib.exe is only for GRIB1 and GRIB2 datasets??

Ming Chen · Jul 24, 2023

Please see the attached file that describes how to download ERA5. Hope this is helpful.

Amadou · Jul 24, 2023

Ming Chen said:
Please see the attached file that describes how to download ERA5. Hope this is helpful.

Well received with thanks

Amadou · Aug 3, 2023

Hello,

After successful running of namelist.wps for both ERA5 pressure and Surface respectively, I am getting the following error for metgrid.
Processing 2021-01-03_13
SFILE
FILE
ERROR: Error in ext_pkg_write_field

It has created met files until 2021-01-03_13 before stopping.

Please, find attached metgrid.log, namelist.wps for both ERA5 pressure and surface, and the job scripts to run them

Ming Chen · Aug 3, 2023

There is no error message in your log file except the one "Error in ext_pkg_write_field". Have you checked whether you have enough space to store more met_em data?

Can you compare your FIle and SFILE at 2021-01-03_13 with that at 2021-01-03_12, and let me know whether there are any differences between them?

Amadou · Aug 7, 2023

Ming Chen said:
There is no error message in your log file except the one "Error in ext_pkg_write_field". Have you checked whether you have enough space to store more met_em data?

Can you compile your FIle and SFILE at 2021-01-03_13 with that at 2021-01-03_13, and let me know whether there are any differences between them?

Hello
When I compiled FIle and SFILE at 2021-01-03_13 and read the outputs, the only difference I can see:
For SFILE:2021-01-03_13, xlvl = 200100, while for FILE:2021-01-03_13, xlvl = 100000. Please see attached

Amadou · Aug 7, 2023

Ming Chen said:
There is no error message in your log file except the one "Error in ext_pkg_write_field". Have you checked whether you have enough space to store more met_em data?

Can you compile your FIle and SFILE at 2021-01-03_13 with that at 2021-01-03_13, and let me know whether there are any differences between them?

When I run ungrib for both Surface and Pressure levels, it creates FILES and SFILES from 2021-01-01 to 2021-01-31. For surface level (SFILE...) it is able to create met files when running metgrid. But for pressure level, metgrid stopped at 2021-01-03_13 with ERROR: Error in ext_pkg_write_field.

Ming Chen · Aug 7, 2023

I am still suspicious this is a data issue. Probably some data are missing at the time of 2021-01-03_13. Now that surface data works fine, let's focus on upper level data. Please look at data (TT, UU, VV, QC, QI, QR etc.) in your FILE: 2021-01-03_13 and let me know whether they have the same number of vertical levels.

Amadou · Aug 9, 2023

Ming Chen said:
I am still suspicious this is a data issue. Probably some data are missing at the time of 2021-01-03_13. Now that surface data works fine, let's focus on upper level data. Please look at data (TT, UU, VV, QC, QI, QR etc.) in your FILE: 2021-01-03_13 and let me know whether they have the same number of vertical levels.

Hello,
Yes, the problem was coming from data. I re-downloaded data for 2021-01-03_13, and it works now

Ming Chen · Aug 9, 2023

Thanks for the update. I am glad it works !

Amadou · Aug 9, 2023

Ming Chen said:
Please see the attached file that describes how to download ERA5. Hope this is helpful.

Thank you so much. Please, can I have the instructions on how to download CFSv2 for WRF model? I also need that dataset

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