wrf physics

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...

I wanted to add a new term in this parameterization. subroutine hsfluxpv(nz,n,bl,bw,albr,rs,swddif,emr,rl,tr,tair,sigma,hspv,eppv,pv_frac_roof,uout,vout,tpv,dt) ! implicit none ! ! Input variables ! integer,intent(in) :: nz !Maximum number of vertical levels in the urban...

Hello, I am wondering if there are prescribed aerosols value in WRF model (not WRF-Chem, WRF-Solar or WRF-ACI). If yes, where I could find those species & values, and is there an option that i can run the model without aerosols? When I use mp_physics_opt = 8, and RRTMG scheme for radiation, is...

Quick question about the WRF physics suite 'tropical' According to the users guide online bl_pbl_physics = 1 YSU; only works with sf_sfclay_physics=1 But for the tropical suite we are using sf_sfclay_physics=91. Is the users guide's table just out of date or does it have an error? Thanks