wps

Hello, I am using ECMWF IFS operational forecast data (0.25 degree) from: https://data.ecmwf.int/forecasts/YYYYMMDD/00z/ifs/0p25/oper/ Files are named like: 20260425000000-0h-oper-fc.grib2, 20260425000000-3h-oper-fc.grib2 etc. I am using the following wgrib2 command to convert before running...

Hello everyone, I tried to start WPS with ECMWF data but I got this error: (base) wrf@DESKTOP-68KO52O:~/WRF/WPS$ ./ungrib.exe *** Starting program ungrib.exe *** Start_date = 2026-05-01_12:00:00 , End_date = 2026-05-02_12:00:00 output format is WPS Path to intermediate files is ./...

Hi all, I am currently trying to create met_em files that use LCZ (assigned using w2w), using WPS version 4.2. I am using the default geogrid MODIS static data. I have had this work for me in the past but now with seemingly no change, I am having issues successfully running metgrid.exe. I get...

Hello everyone, I am generating WRF intermediate files using pywinter and running WPS (metgrid.exe directly, no ungrib involved) using CESM2 CMIP6 bias-corrected data as input. I am encountering small negative soil moisture values in the met_em files, even though I have masked water points and...

Hello all, I'm running a 36-year WRF simulation with 6-hourly met_em output, which generates ~5-6 TB of intermediate files. This raises a storage question: Why do met_em files contain interior grid points for all timesteps when they're only needed for the initial condition (T=0)? After the...

Hi everyone, I am running a WRF simulation with the urban canopy model (UCM). My WRF version is 4.6.0. I want to create my own urban canopy parameters. I can generate GeoTIFFs from GIS, but the static data variable URB_PARAM is a single multidimensional array referenced by one path. How can I...

I am attempting to ingest a custom high-resolution SRTM dataset into WPS (Geogrid). I have successfully converted the GeoTIFFs to the WPS binary format and updated GEOGRID.TBL and index, but the resulting geo_em.d0X.nc topography field (HGT_M) is entirely zeros. Diagnostics performed: Binary...

Hello beautiful community, I am a PostDoc at a wind energy research centre in Germany (Oldenburg, ForWind institute). I want to modify the static geographic data that is contained in the Modis + lakes dataset, specifically the land use. I know how to change these fields in the geo_em and...

Hello WRF community, I'm recently trying to run a simulation using Local Climate Zones (LCZ) using the CGLC_MODIS_LCZ_global (https://www2.mmm.ucar.edu/wrf/src/wps_files/cglc_modis_lcz_global.tar.gz) in WRF v4.4.3 and WPS v4.5. I used WPS v4.5, because only this version can read the CGLC, and...

Hi, I’m using the era5_to_int.py tool to process ERA5 data into the intermediate files required for met_grid. I would like to use pressure-level (pl) data as the input. I have collected the pl, surface (sfc), and invariant datasets in my data directory, and I’m running the following command...

Hello everyone, I'm a freshman and currently working with WPS. I’m using the convert_geotiff module to convert my SRTM elevation data (in TIFF format) into binary files, as I need high-resolution data. However, when I ran convert_geotiff [data.tif], my Ubuntu system ran out of memory and...

Dear Sir, When using IFS data from the European Center with WPS version 4.2 and the latest Vtable.ECMWF to run ungrib.exe, I receive an error stating that variables cannot be read (as shown in the image below). Do I need to use a higher version of WPS or WRF to process IFS data? If so, would...

I have intermediate files for each variable required to run the WRF model. However, I am encountering an error due to a bottom-to-top level approach issue while running real.exe. The issue is happening due to incorrect outputs from metgrid.exe. I feel a modification is necessary in METGRID.TBL...

Hi, I'm using the era5_to_int.py tool to process downloaded ERA5 pressure-level (pl) and surface (sfc) NetCDF (.nc) data into intermediate files for subsequent metgrid preprocessing. According to my colleague’s experience using ERA5 GRIB (.grb) data, only the pl and sfc datasets are required...

Hi, all: I got an error when I was drawing domains with the file 'plotgrids_new.ncl' . I have plotgrids_new.ncl in /fs2/home/sfhua/liqiuyang/WPS/util, I have namelist.wps in /fs2/home/sfhua/liqiuyang/WPS. when I run this script('plotgrids_new.ncl') under WPS directory, where my namelist.wps is...

I did the following: added to namelist.wps: geog_data_res = 'cglc_modis_lcz+default', 'cglc_modis_lcz+default', linked GEOGRID.TBL to GEOGRID.TBL.ARW_LCZ added the following to GEOGRID.TBL =============================== name=LANDUSEF priority = 2 dest_type = categorical z_dim_name =...

The supercomputer on which I run WRF recently had a system-wide update and since the update I have been unable to run metgrid.exe. The executable gives me a successful run log and creates met_em netcdf files; however, the output files are blank. The files contain global attributes but the...

Hello, I am trying to apply a custom landuse dataset (EGIS Landuse for Korea) to WPS geogrid. The dataset was converted into BIL tiles (200×200 pixels each, 30 arc-sec resolution), and I created an index file as follows: type=categorical category_min=1 category_max=21 projection=regular_ll...

I have geotiff files containing monthly values of LAI over a region at high resolution. I have used convert_geotiff to convert the tiff files to WPS binary tiles and have successfully run geogrid to produce LAI12M values that look like my tiff files, however, the "month" dimension is missing...

In my met_em.d01.nc file, both relative humidity (RH) and specific humidity (SH) variables are present. However, all values in the first layer of SH are -1, while RH appears normal. Could this negatively impact WRF simulations?