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ungrib

  1. M

    use ERA5 data in WPS

    Hello I have seen a pdf about using ERA5 data in the WRF model. In that instruction, the author told that we need to download two kinds of data (Pressure level and surface analysis) as you know, there are a lot of parameters in both of them. due to the limitation in processing, it is important...
  2. M

    increase the levels of the intermediate file of ungrib (modify press_pa)

    Hello, Is there any possibility to interpolate the intermediate file of ungrib to have more level in the first Km above the ground ? For example instead of having by default : press_pa = 201300, 200100, 100000, 95000, 90000, 85000, 80000, 75000, 70000, 65000, 60000, 55000, 50000, 45000, 40000...
  3. D

    Can WRF output data be used for Input data on smaller domain

    I have a 4km 120hr WRF run that is created in 5hrs. But when I nest in a 1km grid it increases the time dramatically to finish the run. So my question is can I use the output from the 4km 120hr run as initial data for a new wrf run at 1km? I don't see a vtable in ungrib for WRF on ARGWRF. So...
  4. D

    ungrib.exe w/ Intel compilers doesn't write "FILE" (Possible solution)

    For some reason when using Intel Compilers it is defaulting the output file name to "PFILE" instead of "FILE" This then causes all the following commands to break because it is looking for a file that isn't there. Environment is the same as this post for a similar error...
  5. S

    How can I convert a SST .dods data file into grib2 file to be used in WPS?

    Hi there, I'm trying to add SST data into my WRF model of the Greater Toronto Area. I've downloaded some data from OSTIA, but the only options to download the data were ASCII and binary (.dods). Since I need to use this data in WPS, I was trying to format the data as a grib2 file using CDO, but...
  6. S

    Finding SST data for WRF

    Hi there, I am completely new to using SST data and I'm not sure where to start. I think I understand what I'm supposed to do once I actually have the data, but I'm not sure where to get it, especially in a form where I can use ungrib on it. I'm currently modelling temperatures in Toronto, but...
  7. A

    Ungrib.exe not created

    Hi I just installed WRF V4.4.1 and WPS V4.4 with all netCDF-c-4.9.0, netcdf-fortran-4.6.0, hdf5-1.13.3, zlib-1.2.13, libpng.1.6.39, mpich-4.0.3, and jasper-4.0.0. When compiling WPS, metgrid.exe and geogrid.exe were created, but ungrib.exe was not. Here are the compile.log and configure file...
  8. B

    Errors when ungribbing file

    Hi all, I'm currently trying to use WRF to simulate some weather events from 1844 for research, and to do so I'm attempting to run it on the NOAA 20th century reanalysis V3 since that is the only reanalysis dataset I'm familiar with which goes back that far. To that that end, I have a series of...
  9. M

    Running a new WRF simulation with wrfout

    Hi, I would like to use WRF output as input for a new WRF simulation. As I deleted some variables from the output and my new domain has a resolution with a parent_grid_ratio different than 3 and 5, ndown shouldn't be suited to produce the forcings. So I guess the only solution is to use UPP...
  10. A

    ungrib crashes with intel compiler

    Hello, I try to rebuild my system with the Intel compiler. I passed all the tests of the tutorial about compiling WRF. I have successfully built WRF and WPS, and all the required libraries such as netcdf, jasper... geogrid.exe runs fine, But ungrib.exe crashes when it has output all the...
  11. M

    Grib2 file or date problem, stopping in edition_num.

    I am trying to execute ungrib.exec and I am getting below error *** Starting program ungrib.exe *** Start_date = 2022-09-12_00:00:00 , End_date = 2022-09-12_06:00:00 output format is WPS Path to intermediate files is ./ ERROR: Grib2 file or date problem, stopping in edition_num. I am...
  12. C

    Ungrib.exe fails to process input GRIB files

    Hello to all. I am in the process of attempting to ungrib ERA-5 Reanalysis 0.25-degree data available from the UCAR Research Data Archive for simulating Hurricane Ivan. I am used to routinely having to reobtain ERA-5 data and model outputs as the supercomputer I perform tasks on purges the data...
  13. L

    Ungrib error "killed"

    Hi, I'm new to WRF and I tried running ungrib, but it gave me an error "killed". This is what the terminal shows: *** Starting program ungrib.exe *** Start_date = 2020-05-03_13:00:00 , End_date = 2020-05-04_23:00:00 output format is WPS Path to intermediate files is ./ Killed This is...
  14. J

    Problem executing ungrib program

    Dear Madam/Sir I am getting an error while using ungrib and it shows the following, I will attach my namelist and hope someone will help me. Thank you in advance.
  15. S

    ungrib.exe fails to create

    In compiling the WPS, the ungrib.exe is not created. As per 'compile.log', it seems the issue I am having is the same as this one (No ungrib.exe), but there was never a resolution for this issue. I tried the solution there, but no luck with creating the ungrib.exe. As per where the post ended, I...
  16. M

    Failure to run ungrib after HPC OS update: libjasper.so.1 not found

    Hello all, I run WRF on an HPC system whose OS was recently updated. I attempted to run WPS for the first time after the OS update but it only generated the geo_em files. After looking through some files, I found the culprit for the unsuccessful WPS run: ./ungrib.exe: error while loading...
  17. L

    WPS using ECMWF IFS ds113.1

    Dear all, I know I need to link and run ungrib.exe for suface and pl, respectively. First, I downloaded ECMWF Operational 6-hourly atmospheric isobaric analysis files from https://rda.ucar.edu/datasets/ds113.1/ They looks like seperate files for each variable. I am not sure how to link the them...
  18. Q

    Let's get familiar with the data by running g2print on one of the data files

    Dear all When I running g2print on one of the data files in the Single Domain Case of WRF -ARW Online Tutorial, my programm appear a fatal error that Error in `./ungrib/g2print.exe': corrupted size vs. prev_size: 0x000000000167ff90. if you have a solution about it,Please tell me...
  19. Y

    Vtable for ICON-eu

    Hi all, I have tried to use ICON-eu with a regular grid dataset being input for the WRF model. :idea: So, I created a new Vtable and a METGRID.TBL for variables of this dataset. All variables, except only soil variables, are read correctly by ungrib. Soil moisture variables are...
  20. S

    (RESOLVED) error while loading shared libraries: libpng12.so.0:

    Hello! I am trying to set up WRF V4 on Ubuntu 18.04.1. WRF compiled successfully and it seemed like WPS build all the executables, since they appeared and are not zero-sized, but the compile log (attached) didn't end with a message about executables being successfully built. Geogrid runs...
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