wrf utilities

Hi,I have been studying the observation nudging program (obsgrid.exe). When I use met_em files at 3-hourly or 6-hourly intervals, I can successfully run obsgrid.exe and use the resulting OBS_DOM* files in wrf.exe. In this case, the OBS_DOM files contain observation data at the same 3-hourly or...

Guide on choosing physics parameterizations for specific weather scenarios.

Dear WRF Support Team, I am Jitendra Bhilala (jitendra.bhilala@tropmet.res.in), a researcher at IITM trying to install WRF-Hydro-iso-tag (isotope-enabled WRF-Hydro v5.0 fork from Figshare: https://figshare.com/articles/code/WRF-Hydro-iso-tag_source_code_and_test_case/18523733) on WSL Ubuntu...

Hi all, I run the em_hill2d_x idealized simulation and I would like to plot streamlines. I've tried using both wrf-python and xwrf but I can't find a way to make it work. I attach here both scripts I've tried. In both cases my issue is with the shape of the variables used in ax.streamplot() Any...

May I ask what I am using when trying to compile the v_interp program gfortran v_interp.f -L/home/yy/software/netcdf/lib -lnetcdf -lm -I/home/yy/software/netcdf/include -ffree-form -o v_interp Why does this code have the following error? How should I compile the program correctly? Thank you...

Hello everyone. I've recently switched to a Macbook Pro M4 and I've installed all the libraries I need for WRF post-processing, with the wrf-python installed from source code. I want to use a script for plotting I was using on my previous laptop (running with Ubuntu distro), but now I get...

Hi, I am working with WRF-Chem v4.6.1 using the MOZMEM chemical mechanism and have set emiss_opt ==10 to read point source emissions. I have a point source emission inventory that includes both CH4 (methane) and benzene. The model correctly reads e_benzene emission and generate benzene output...

I'm running 1km simulations (soon to move down to 250m) and I'm having memory issues using 'getvar' to extract the variables. I can get T2, rh2, td2, uvmet10, uvmet10_wspd_wdir and slp for all times but the remaining variables (excluding lat/lon/ter), require a single time index. I've attempted...

Hi all, I would like to add some new variable inputs into WRF. For example, I need to input 10 variables, all of which are dynamically changing, and each variable has its own distinct timestep. I understand that auxinput5 can handle dynamic inputs(SST,LAI,etc), but I have more than one variable...

I am getting an warning when trying to execute ./wrf.exe. The Input boundary data is d083003 Timing for main (dt= 15.00): time 2019-05-08_23:59:45 on domain 2: 3.34889 elapsed seconds Timing for main (dt= 15.00): time 2019-05-08_23:59:45 on domain 1: 3.89559 elapsed seconds Timing...

I'm running WRF452 on the Linux subsystem of my own Windows 11 system in my pc to simulate a typhoon. When I use ONE processor, wrf.exe runs successfully but slowly. However, when I use 16 processors for fast running speed, wrf.exe runs several hours and output 4 hours wrf_out* data, then it...

Hello. I'm running WRF for the 3 nested following meshes with ndown. First mesh: 5.55km resolution - 411x391 nodes Second mesh: 1.11km resolution - 1496x1411 nodes Third mesh: 370m resolution - 3829x3451 nodes The third mesh is a subregion of the second one and the second a subregion of the...

I want to study sea-land breeze in different thermodynamic case. case 1 : sea-land temperature difference is 5 degree C. case 2 : sea-land temperature difference is 10 degree C. it doesn't need to be correctly '5' or '10' degree C, but I want to see the difference of wind, snow in different...

Hello everyone, I am carrying out an experiment with WRF to study the role of a mountain in South America on the precipitation of the surrounding region.. For this, I have run a control simulation with the mountain in the topography, and an experiment simulation where I have modified the...

Hi everyone, I'm using convert_emiss to conduct volcanic ash simulation following excercise 2(NOAA - Global Systems Laboratory) I have get the files(wrf_gocart_backg, emissopt3_d01, emissfire_d01, volcs_d01), and when I copy them to convert_emiss directory then run ./convert_emiss.exe, the error...

Hi I have been exploring the nudging options from cyclones and so far I have been successful in nudging ERA5 data in the coarse domain ( I am using 3 nested domains) I want to see if I can improve even more the cyclone trajectory using cyclone track data. For this I created the OBS_DOMAIN file...

Hello! l try to use obs-nudging with WRF run. l use both upper air and surface data in little-r format from website (https://rda.ucar.edu/datasets/ds351-0/)and (https://rda.ucar.edu/datasets/ds461-0/). Meteorological data used in WPS are ERA5 data at 3h time intervals.It successfully generated...

Hello! When using OBSGRID, I have a question regarding running ./get_rda_data.exe. After downloading the upper-air and surface observation data (ds351.0 and ds461.0), I merged all files using the command cat *OBS:2023* > rda_obs. The upper-air data files are named OBS:YYYYMMDDHH, while the...

Hello! I would like to ask some questions about OBSGRID. Question 1: According to the official user guide I've read, it says that the observation data has a time interval of 6 hours and after downloading, it needs to be split into 3-hour intervals using get_rda_data.exe. Is this a necessary...

Hello, I started studying WRF-UCM recently but I have a some questions about pre-processing. I want to add a Anthropogenic heat in urban sites and see the difference about sea-land breeze. I found that UCM-model split landuse 1(urban) to 3-types(31,32,33) and add a Anthropogenic heat. I'm...