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wps

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    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...
  2. K

    Adding outer domain to pre-existing 2-domain configuration

    I am working on a project that is running multiple high-resolution (3 km) simulations of events spanning the entire 20-th and 21-st centuries. We have completed all but one of our events after 1940 (~25 events total) using ERA5 as our forcing dataset with a 9-3 km two-domain nesting setup. We...
  3. W

    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...
  4. V

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

    Hello, I had an error when running ungrib.exe in WPS. I utilized CDO to view my grib2 file, there is nothing wrong compared to the example file. Also i checked ungrib.log, it showed the same error statement. I don't know how to solve it. Thanks!
  5. Y

    WPS compiling error

    I have compiled WRFV4.4 successfully. When I try to compile WPS, it has some error. That can not find cio.o and read_geogrid.o. I am not sure what happened. I use the gcc version is ( gcc (GCC) 11.4.1 20231218 (Red Hat 11.4.1-3)) and GNU Fortran (GCC) 11.4.1 20231218 (Red Hat 11.4.1-3). I have...
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    ECMWF open data 0p25 enfo grib2 Vtable?

    Hello, do you guys have a Vtable about this kind of data? https://data.ecmwf.int/forecasts/20240922/00z/ifs/0p25/enfo/
  7. S

    Problems in LU_INDEX in nested domain

    Hello! I'm running a simulation using a namelist provided during a wrf tutorial (attached below) which uses the NLCD dataset for static data. Everything seems to be ok for the first domain, while the second domain shows some problems with the LU_INDEX variable (see the image below). I noticed...
  8. A

    Issues with int2nc.exe

    I am trying to create my own intermediate files in Python using CESM2 Large Ensemble output and have run into some issues with the generated intermediate files. For example, I am writing surface U-winds as 10-m U winds (UU @ xlvl=200100) and then proceeding to write each isobaric level for UU...
  9. S

    WPS WRF simulation time period difference

    Hi, I would like to know if it is compulsory to keep the simulation time period between WPS and WRF same. Can I run WPS for certain time period range (say 01-Jan-2020_00 to 03-Jan-2020_00) and do different runs of WRF with different starting time (eg: Run-1: 01-Jan-2020_06 to 03-Jan-2020_00...
  10. C

    How to use new landuse data?

    Dear WRF-Experts My WRF Version is WPS-4.3.1 and WRF-4.3.3 I'm going to simulate WRF-UCM in South-Korea, So I made new landuse binary file for split LU_INDEX=1 to 31,32,33 I want to first apply landuse with my new data, and fill the nodata with usgs landuse data. So I modify namelist.wps and...
  11. A

    Add Ocean mixed layer thickness (OML DATA) in WRF simmulation

    i ve download from Copernicus Marine Service, Ocean mixed layer thickness and i want to add threm to WRF in namelist.input i've added the extra options sf_ocean_physics = 1, sftcflx = 1, oml_hml0 = 25 But hese values are fixed. How...
  12. T

    Using SRTM data to replace the default terrain data

    Hi all. I am using convert_geotiff to convert geotiff to binary fileThe command is "convert_geotiff -w 4 -t 1500 -u "meters MSL" -d "3s topography" -b 0 -m -32768 srtm_china.tif".After that ,i change the GEOGRID.TBL and namelist and run the geogrid.exe. The variable HGT_M and the index...
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    .p000 files when running metgrid.exe and real.exe not working after

    I am trying to run a WRF with a very large domain at 4 km. Running metgrid.exe on Derecho produced *.p000 files that I hadn't seen before. It appears that metgrid.exe runs correctly and auto-deletes the .p000 files. I then go to run real.exe, and I get the attached error before real.exe...
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    Problem with creating ungrib.exe

    Hi there, I was able to compile WRF-Chem successfully. When compiling WPS (v4.5), geogrid.exe and metgrid.exe are created, but failed to create ungrib.exe. These are the errors I receive: I selected serial mode with the same compiler I used to compile WRF-Chem. Please find configure.wps and...
  15. Y

    problem about ungrib/Variable_Tables/Vtable.SST

    I tried to add the SST part in WRF, but I encountered the following error. I am using ERA5 data. How should I resolve this?
  16. S

    Time is not right when converting OISST data to intermediate data.

    Hello, I am a student who is studying WRF. I succeeded in converting OISST data into intermediate data using netcdf-to-intermediate.f provided by ncar, but there is a time-varying problem. This problem did not occur when I converted OISST data for 2022, so why is it happening? I would...
  17. 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.
  18. 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...
  19. S

    Metgrid run with dmpar (parallel run)

    I am running WRF using WPS 4.4 version and would like to run metgrid using dmpar. As a result of searching through previous posts, I saw many people recommending serial because its performance is not bad. However, since we are trying to reduce the WRF execution time as much as possible, we are...
  20. J

    Is it recommended to use the same spatial resolution for all surface parameters?

    Dear users, The WRF model has 30 arc-seconds (~900 meters) as the higher spatial resolution by default. I read many papers where authors changed the topography (HGT) to a higher resolution (e.g. 90 meters). I also managed to change it. But now I have a question. The another surface parameters...
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