wrf physics

I run em_tropical_cyclone, and when I used grep "cfl" rsl.error.*, I encountered this error. Could you please tell me how to improve or fix it? Here is my namelist.input and rsl.error.0027. Thank you very much!

Dear all, I’m trying to run a WRF-Chem simulation to study the interaction between dust and ozone. My goal is to simulate both dust emissions and ozone chemistry in the same run and analyze their coupling effects. From previous posts, I’ve seen that it might be possible to activate both by...

Hello professor, I find the following lines in Registry.EM_COMMON: state real ZNT ij misc 1 - i3r "ZNT" "TIME-VARYING ROUGHNESS LENGTH" "m" state real CK ij misc 1 - r...

Hi, I am running a simulation over 3 domains (9-,3-,1-km) to examine the role of cloud radiative feedback on coastal convection. Following other threads, I have included the following: 1) icloud = 0 2) cu_rad_feedback = .false.,.false.,.false. 3) shallowcu_forced_ra = .false.,.false.,.false...

As a freshman, I am using WRF to process data and NCL to display 6h rainfall. However, the system shows 0mm of rainfall, which is actually incorrect. So I would like to know how to correctly display this data.

Hello all, I'm using WRF-Solar shcu_physics=5 (Deng) to simulate the shortwave radiation conditions over the whole China, but got a "segmentation fault" error, it seems like this error is related to the Deng shallow cumulus scheme. I'm not sure if I might have missed some parameter settings...

Hi, I've been researching the snow albedo effect recently and would like to turn it off by modifying module_sf_noahlsm.F. Do you have any suggestions, or is there detailed documentation about module_sf_noahlsm.F that I could refer to? Thank you very much!

Hello WRF community, I'm recently trying to run a short 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 v4.5.2. I have 3 domains, whose info in shared in the namelist files. I have...

I am currently interested in running an experiment that alters HFX and LH by a scalar via windspeed. For example, I want to add a scalar value to the windspeed that calculates the surface flux values, and to do this, I dug into module_sf_sfclay.F file and found where QFX/LH and HFX are...

real.exe runs successfully, but when I try to run wrf,exe gets the following error. Please help me to resolve this issue INITIALIZE THREE Noah LSM RELATED TABLES Input data is acceptable to use: WRF NUMBER OF TILES FROM OMP_GET_MAX_THREADS = 1 Tile Strategy is not specified. Assuming 1D-Y...

I am using WRF-BEP-BEM to simulate heatwave events. Case 1 uses double nesting, with resolutions of 9km and 3km respectively, and can operate normally. When Case 2 uses triple nesting, the simulation process crashes. The simulation area of Situation 2 is the same as that of Situation 1, except...

Hello, Recently, I have been using the WRF 4.7.0 version (WPS 4.6.0, NOAH-MP 4.7.0). I want to simulate the flood irrigation amount, however, the simulated irrigation amount is zero. I am not sure where the problems lie. Question 1: Which variables are necessary to simulate the flood...

Hello, I am simulating downslope windstorms in complex terrain, which means that detailed LANDUSE is desirable. I decided to use this 250m CORINE dataset: https://zenodo.org/records/4432128 The authors suggest that using NoahMP is needed for this option, as well as turning off the urban...

Hi everyone. I am currently simulating several cold spell events in eastern China using WRF-SLUCM. However, in some cases, we found that the model results poorly captured the temperature variations when compared to meteorological station observations. As shown in the figure , the cold spell...

I am trying to run a WRF simulazione over the Alpine region, which works correctly unless I try to activate sf_lake_physics. In that case, it stops after a few seconds, with the last line in the output file being: the total number of lake grid is : 0 (the result is the same with Noah...

Crash in surface energy budget Hello, I met an error in the energy balance calculation with the RUC when I was using wrfv4.6.1 and the running was interrupted. This is the operation screen situation as well as the namelist.input file. I feel like my settings are all right, whether it's an issue...

Dear WRF Community, I’m currently troubleshooting a persistent crash in WRF v4.5 that consistently occurs after the third model day, with the following error: I'm running at 15 km resolution, using Noah-MP (sf_surface_physics=4) and the following physics setup: What I’ve Tried and Observed...

Hello all, I want to use mosaic landuse categories, firstly I tried Noah LSM and run wrf.exe successfully. But the results were not very good. So I want to test RUC LSM, but I got this following error: d01 2024-10-21_00:00:00 No average surface temperature for use with inland lakes Assume...

Hi all, I'm working on a WRF case study for the Huang-Huai-Hai Plain (China) and found that the simulated T2 (2m temperature) consistently shows significant errors compared to observed monthly mean values, with RMSE ranging from 2 to 4°C. Here are the cases that I have tested. Forced with ERA5...

integer,intent(in) :: nz !Maximum number of vertical levels in the urban grid real,intent(in) :: bl !Building length [m] real,intent(in) :: bw !Building width [m] real,intent(in) :: albr !albedo of the roof (ext.) real,intent(in) :: emr...