wrf physics

We use WRF version 4.5.2 for urban climate studies. Registory.EM_COMMON has been modified to output variables related to urban areas. Some skin temperature results, such as TR_URB2D (urban roof skin temperature), TB_URB2D (urban wall skin temperature), and TG_URB2D (urban road skin...

Dear all，I was trying to run a simulation. I am getting error： Program received signal SIGSEGV: Segmentation fault - invalid memory reference. Backtrace for this error: #0 0x7FE34E0F76D7 #1 0x7FE34E0F7D1E #2 0x7FE34D5F327F #3 0x1E63E37 in taugb3.6165 at module_ra_rrtmg_lw.f90:? #4...

Hello, When I run WRF, I get 24 hours of output for my 3 day simulation before getting errors. I imagine this is due to a problem with the physics or dynamics parameters I have set in the namelist, but am not spotting the issue. Namelist and rsl* are included below. Thanks!

I'm looking for an ensemble technique, and I remember using it in other numerical models and I think it was also used in WRF, but I'd like to know the specific method. This is a method of using the effects of multiple physics processes in one experiment. Once dynamics is performed, it then...

I attempted to run WRFV4.5.1 using the attached namelist.wps and namelist.input. It appears that the model ran successfully; however, there are some lines in rsl.out.000* that I'm unsure about. I would be grateful if someone could help me understand these lines. Are they important? Should I...

Dear community, To the best of my knowledge, I think the SLUCM considers anthropogenic heat by giving a heat source term to each urban category(e.g., 20W/m2 for subruban category). and the BEP/BEM calculate the heat emission from air conditioner (AC). My questions are: 1. Does BEP/BEM...

Dear Community, I have ran a same simulation successfully. When I modified the land cover data slightly (mainly Urban parameters for urban canopy model) and rerun the same simulation, it crashed after almost one month of simulation and shows as follows: ERRENG = 1.368042 at i,j...

Can someone run WRF-V4.5 with the Thompson scheme (mp_physics=38)？ It will crash when i setup mp_physics=38.

Hello, I am working with the WRF version 4.4.2 and noticed something odd in the file module_physics_init.F under the phys directory. -------------------------------------- CASE (LSMSCHEME) IF(TRIM(mminlu) .EQ. 'NLCD40')THEN CALL wrf_message('Using NLCD40 for Noah, redefine urban categories ')...

Hi WRF community, I have a simulation that I have always been able to do restart runs for, it consisted of 2 scenarios: Control and Irrigation. The irrigation run only utilizes existing irrigation options in the WRF namelist. I have managed to do restart runs for both scenarios before using...

The variable radt is a little confusing in the namelist description above. So If I have a domain that is 9-3-1km should radt be set for 9 across all domains or 9-3-1 for each of it's domains?

Hello, I am running WRFv4.4.2 and studying the registry to create only the variables I need in the output. There are numerous files in the ~/WRF/Registry directory, and from what I understand, the files used are different depending on the compilation options (em_real, or ideal, etc.), and there...

Dear community. I trying to run a WRF simulation with sf_urban_physics enabled. However the model crashes around end of June for two different years (2021 and 2022): forrtl: severe (408): fort: (3): Subscript #1 of the array KA_MN2O has value -2147483647 which is less than the lower bound of 1...

I am currently using the version 4.1.2 and trying to use time-varing ocean currents imported from the coupled ocean model. Also, the time-varying sea ice information has been imported from the coupled sea-ice model. After examining the code, the surface currents are removed from the lowest...

Dear WRF experts! I am stuck running WRF urban using the cglc-modis-lcz_100m dataset for Germany using three one-way nested domains at 12, 3, and 1 km, respectively. I'm considering the sf_urban_physics = 2 and the hybrid 100-m global land cover dataset with Local Climate Zones. To use this...

Hello all, I am currently running WRF simulations with the goal of resolving rather short wavelength (high-frequency) wave motions in the lee of a mountain range (wavelength of several km and period of 1-10 min); in the past these motions were attributed to KH instability between the...

Dear WRF Community, I am trying to run a case by turning off Surface Sensible Heating (HFX) from the simulation. I use the Revised MM5 for the surface layer physics (option 1 in namelist.input). I got some ideas from this previous thread. I modify module_sf_sfclay.F file I changed the line...

Hi! I was making an LES simulation over ocean and seaice grids. While analyzing the outputs, I found that the sea surface roughness length (ZNT) is in correlation with the wind speed (checked for various heights up to 50m from the surface). Although the correlation is not precisely 1, I was...

Hello, I am using the AFWA module in WRF4.5（Thompson MP（8））to simulate icing. When I modified the registry. afwa and open afwa_icing_opt, the corresponding variable output all 0 in WRFOUT（ICING_SM and ICING_LG）. When I turn on AFWA, I get the Radar variable. And in...

Hello experts, I ran two simulations with sf_urban_physics = 0 and sf_urban_physics = 1 (SLUCM), I coupled both with Noah LSM, Please I will like to know how Noah calculates the skin surface temperature for both. I took a look at the module_sf_noahlsm.F code but i do not have clarity on it, I...