Scheduled Downtime
On Friday 21 April 2023 @ 5pm MT, this website will be down for maintenance and expected to return online the morning of 24 April 2023 at the latest

ungrib

  1. J

    Using daily surface data with 6-hour UPA -- how to configure?

    Hello, I am trying to drive WRF with EC-Earth output which contains upper air variables(ta,ua,va,spechum) along with a few surface ones (psfc, ps) at 6-hour frequency. Both the soil and surface data is only available at daily resolution (T2,U10,V10,PSML,ST,SM). Per my understanding of WRF, it...
  2. B

    Issue while running geogrid.exe ungrib.exe

    Hi I am running ./geogrid.exe and ./ungrib.exe command on supercomputer but it giving me error that /geogrid.exe: error while loading shared libraries: libnetcdff.so.7: cannot open shared object file: No such file or directory and /usr/mathlib/libpng/lib/libpng15.so.15: version `PNG15_0'...
  3. A

    Ungrib.exe SST data error

    Hi. I have this error when running ungrib.exe for SST data. I understand that it says that the start time has to be before the end time, which is obvius, but SST has only one time. So, the start time and the end time will be the same. I don't know what to do. Thanks for the future answers.
  4. N

    ungrib.log symbols

    Good morning. Could somebody kindly explain the meaning of the "O, X and -" symbols beneath the variables listed in ungrib.log after its completion? I am struggling to find the documentation. Thank you
  5. R

    Error running ./ungrib.exe

    Hello, I got the following error while running ./ungrib.exe .I downloaded the era5 data from NCAR research data archive . I have attached the namelist.wps and error file below. Do I need to provide Vtable for both pl and sfc data? I linked both datas using command. , ln -sf...
  6. J

    metgrid.exe crashed when using different src data

    Hello, I would like to running a wrf based on a combined field which consists of ERA5 field and the GFS RH field. In order to achieve this, I had editted the Vtable file and ungribed them seperately. 1) For ERA5 dataset: edited the Vtable file, remove the RH field of record, reivsed the...
  7. B

    Running `ungrib` on complete ERA5 global atmospheric reanalysis sigma levels

    Hi everyone, I’m working to initialize an MPAS run using initial conditions from the full ERA5 reanalysis dataset. Since my simulations target much higher altitudes (>100 mb), I’m using the 137 model levels rather than the standard 37 pressure levels to achieve higher resolution in these upper...
  8. J

    ./ungrib.exe: ERROR: edition_num: unable to open GRIBFILE.AAA

    Hi, I am running ./ungrib.exe of WPSv3.9.1 (WRF Preprocessing System) in a NCAR Derecho HPC. It used to run fine previously without any errors within the same directory. All the required files are in the directory. I use era5 data from ‘/gpfs/csfs1/collections/rda/data/ds633.0/’ for surface and...
  9. S

    ERA-5 land data ungrib issue

    Hi all, I'm having an issue with ungrib program while using the ERA-5 land data (ERA5-Land monthly averaged data from 1950 to present). I'm getting the following error message after running the ungrib program: *** Starting program ungrib.exe *** Start_date = 2017-03-01_00:00:00 ...
  10. S

    ERA5 rda grib retirement?

    On the NCAR RDA page for hourly ERA5, this notice appeared: "2024-09-27. Important notice regarding RDA ERA5 GRIB files: Please note that DECS is in the process of completely phasing out whole file download, subsetting, and campaign storage access to RDA ERA5 GRIB files, with a planned end of...
  11. J

    Sources of GFS data matters the ungrib FILE

    Hello, I used download the GFS 0.25 degree data through the AWS cloud website. https://noaa-gfs-bdp-pds.s3.amazonaws.com/index.html It is strange that ungribbed FILE data only contains 21 levels data. the output of vars attribute gfs.t00z.pgrb2b.0p25.f000...
  12. William.Hatheway

    How to use ERA5 Data From Copernicus Database

    **Guide to Using Copernicus ERA5 Data with WRF** Dear WRF Users, Many users encounter challenges when utilizing ERA5 data from the Copernicus Climate Data Store (CDS) with WRF. To assist, I've put together a step-by-step guide on how to successfully download, process, and run ERA5 data within...
  13. C

    Error in ungrib.exe

    Hello, I am trying to run ungrib.exe and encountered the error below: (base) jamiu@jamiu-OMEN-by-HP-Laptop-15-ce0xx:~/Build_WRF/WPS/ungrib$ ./ungrib.exe ./ungrib.exe: error while loading shared libraries: libpng12.so.0: cannot open shared object file: No such file or directory I have...
  14. D

    Execution of UNGRIB.exe using ERA5 data

    Hello! I’m currently trying to make ungrib files using ERA5 data and eventually want to make metgrid files. However, there are 2 types of ERA 5 data: pressure level data and surface level data. Can you enlighten me by answering the following questions? 1. We need to make GRIBFILE.* (e.g...
  15. S

    unloaded Vtable

    Hello I tried ungrib in WPS. As the picture shows, Vtable is unrecognized. What does the error "ERROR in Subroutine PARSE_TABLE" means? and How should I do next? Best regards.
  16. R

    How to read only one layer of a 3D variable?

    Is there a way to configure the ungrib Vtable to read in only one layer of a 3D variable? We are working with multiple years and want to reduce input files to be 2D, if possible. Specifically, we are looking to just work with surface level MASSDEN, but currently we are running through all 50...
  17. S

    Issues with converting SST nc data to grib

    Hi all, I'm in the process of updating SSTs in the WRF v3.8 model but I'm running into WPS issues when attempting to convert GLSEA SST data from netcdf to grib. I'm aware that there are similar posts on this forum however, after trying out a couple of different options, I am still running into...
  18. E

    How to use pywinter for intermediate files?

    Hi all, As my title says, I am trying to use pywinter to generate intermediate files to be read in by WRF/MPAS-A. I can import the module in python via import pywinter But trying to import the subroutine import pywinter.winter Results in the following error: ImportError...
  19. S

    WPS ungrib ERROR: Grib2 file or date problem, stopping in edition_num.

    Please note: This is the same issue as this post: https://forum.mmm.ucar.edu/threads/ungrib-exe-not-generated-after-compiling-successfully-metgrib-and-geogrid-exe.9434/#post-21637 However, I was not allowed to reply to that thread, so I am starting a new one. Also, the issue reported in the...
  20. M

    ERROR querying GRIB2 message = 5

    Hi I was trying to run a simple one domain WRF simulation using FNL data. I was able to run ./geogrid.exe, but am encountering an issue when running ./ungrib.exe. I executed: 1) ln -s ungrib/Variable_Tables/Vtable.GFS Vtable 2) ./link_grib.csh...
Top