wrf_physics

I am performing a sensitivity study to see the effect of cumulus parameterization (KF Scheme). I am using two nested domains; 30km and 10km (study area). I am performing two experiments where in control, I am running the model with KF Scheme and in test, I am switching it off in both domain...

Hello everyone, I am interested in precipitation output from WRF. Currently I am defining my domains and I would like to ask if nested domains of 15km and 5km are a suitable choice for precipitation? Additionally, I am unsure if I need to activate the cumulus scheme for both domains, or only for...

Hi there, I have been trying to find the variable for Specific Humidity (sph) at single level/ pressure levels from the output files. Does it come with any specific parameterization schemes.? Although I tried some combinations and have not been able to find it Thank you so much for your time...

Hello, I understand that wrf.getvar will give both the speed (dim 0) and the direction (dim 1) V1 = wrf.getvar(ncdin, "uvmet10_wspd_wdir", units="m s-1",timeidx=wrf.ALL_TIMES,meta=False)[1,...] But, I would like to ask about the way that direction is provided by the package. 0 degrees is wind...

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 need helping running the WRF-Solar model. When I execute the WRF-Solar model without the shcu_physics, it compiles successfully. However, upon adding the shcu_physics, I encounter the following message: 'Tile Strategy is not specified. Assuming 1D-Y WRF TILE 1 IS 1 IE 100...

Hello, I am interested in using the spp_lsm scheme for the RUC land surface model using WRFv4.5, however when I look through module_sf_ruclsm.F I don't see where the perturbations are applied to the parameterization. It seems like the perturbations are supposed to be added in the subroutine...

Hi All, How do I compute the net radiation at the ground surface? Do I just sum the SWDOWN ("DOWNWARD SHORT WAVE FLUX AT GROUND SURFACE") and the GLW ("DOWNWARD LONG WAVE FLUX AT GROUND SURFACE"), or there is more variables and some equation to consider? Thanks in advance for your help...

I have a few questions about NOAHMP 1. Do you have to change the geogrid file link from geogrid.arw to geogrid.arw.noahmp to use noahmp? 2. Which optional or supplementary files are needed to use noahmp for geography 3. If you don't call the noahmp geogrid file and you put the noahmp commands...

Hi, running on a debug compiled WRF v4.5.1, I step into a floating point exception right at the beginning of the simulation with the Grell-Freitas cumulus scheme: (...) WRF NUMBER OF TILES = 1 [irene2054:3782323:0:3782323] Caught signal 8 (Floating point exception: floating-point invalid...

Hi, Running with a debug compiled WRF v4.5.1 version, I found an 'Subscript upper bound' error. The message I got is the following one: (...) WRF NUMBER OF TILES = 1 forrtl: severe (408): fort: (2): Subscript #3 of the array TMR_RACG has value 5 which is greater than the upper bound of 1...

Hi, Now it seems that in debug compilation mode, with WRF v4.5.1 (and the configuration I am using) model initializes properly. However, whilst integration, I step in a Floating point exception from the Boulac PBL scheme. The error message (after 333 seconds of integration, 10 time steps for...

Dear Community, I am currently working on generating wind velocity simulations based on changes in radiation, specifically for simulating sea-breeze phenomena. Through a Google search, I discovered that the idealized case em_seabreeze2d_x in WRF can assist me in achieving this simulation...

Hi everyone, Recently I'm trying to adapt LES into our domain, I followed all the instructions mentioned in Prof. Dudhia's WRF physics slides but the model always crushs at the beginning of the first tile, with no information given. I also tried shorten the time step but it barely helps. I...

Can IFS/EC data be used with RUC LSM? Should flag_sm_adj be used like with GFS or not?

Hello! I would like to make the horizontal advection of potential temperature & water vapor within a certain range as zero. Although the compile was successful, when I set horizontal advection terms as zero variables associated with potential temperature or water vapor turned into 'nan'. Model...

taskid: 64 hostname: c08n11 module_io_quilt_old.F 2931 F Quilting with 1 groups of 0 I/O tasks. Ntasks in X 7 , ntasks in Y 15 Domain # 1: dx = ********* m WRF V4.5 MODEL No git found or not a git repository, git commit version not available...

Hello, After I successfully ran a "Base" physics configuration (see table below) multiple times, doing high-res. topgraphy and vertical-levels-number experiments, I needed to try other physics parameterizations. According to an extensive literature review and my case's characteristics...

Hello, I have a question about the physics in wrf 4.5 , i noticed that exist an accelarted version of some physics like wsm-3 and wsm-5 but wsm-6 not, why wsm-6 haven't an accelarate version ?