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wrf physics

  1. S

    P3 microphysics scheme modification

    I want to make some changes to the MP P3 scheme based on some literature review I see in the phys folder there are four files for this scheme: module_mp_p3.F module_mp_p3.f90 module_mp_p3.mod module_mp_p3.o I started modifying the module_mp_p3.F file and left the others untouched. After...
  2. W

    WRF output variables

    Looking to see if there are WRF namelist options that need to be enabled to have certain exports in the wrfout file. I am looking for these times of values: 1.) are there any icing or turbulence options at different altitudes from that model? 2.) are there any surface visibility forecast...
  3. W

    Modify aerosol over part of the domain

    Hi everyone, I am trying to increase water friendly aerosol number concentration over the Great Barrier Reef to test the sensitivity of clouds to aerosol loading. The Thompson Aerosol Aware microphysical scheme is applied, and auxiliary aerosol climatology is used...
  4. K

    Radiation in Real-data WRF

    Hello everyone, As a sensitivity experiment, I would like to investigate the effects of long-wave radiation (specifically, cloud top radiative cooling and cloud base radiative heating) on the development of a mesocyclone. The first option that comes to mind is to simply turn off the long-wave...
  5. G

    Horizontally heterogeneous aerosol concentration

    Hi, I am trying to run an idealized WRF simulation with mp_phys option 28 (Thompson 'aerosol-aware' scheme). So far I have been successful at specifying a vertical profile (but horizontally homogeneous value) of CCN and IN in the model. Is it possible to vary the aerosol concentration in the...
  6. F

    WRF physics for 1km domain forcasting application

    Hello, I'm nesting a 1km reolution domain inside a 5km domain. Both 100 grid squares. Input data is GFS forcast. I'm running the simulation primarily to forcast weather for sailors so the main parameters I'm intersted are surface winds, rain, CAPE and a few upper level winds. Clouds possibly but...
  7. M

    real.exe changes LU_INDEX and LANDMASK when producing wrfinput file

    Hello: I am conducting a WRF simulation using ERA5 reanalysis input data. I successfully ran all programs in WPS and generated met_em files that look as I'd expect. However, when I run real.exe, the wrfinput files that get produced have changes in the LANDMASK and LU_INDEX. Specifically, a...
  8. W

    WRF always stops at the same location with cfl error

    I am running a case that and always seems to stop at the same time. Things I have tried: 1. Increased number of cores (8 to 16 using mpirun -np 16 ./wrf.exe) 2. Increased ptop (5000 to 3000) 3. Increased e_vert (45 to 50) 4. Decreased time_step (90 to 60) 5, Checked rsl files: I have...
  9. M

    WRF 4.5.1 runtime error: Allocatable actual argument 'qc_bl2d' is not allocated

    Hi all - I'm attempting to set up a solar forecast instance using WRF 4.5.1 and the Deng shallow cumulus parameterization (shcu_physics=5), and I've been getting all kinds of errors. The latest is the "not allocated" error in the title of this posting. Since I'm not using the actual WRF-Solar...
  10. RCarpenter

    Problems running Urban UCM and WUDAPT LCZ

    I am having trouble using the single-layer UCM with WRF 4.5.1. WRF dies after about 1.5 hours with little diagnostic info. I’m running GEOGRID with geog_data_res = 'cglc_modis_lcz+modis_lai+modis_30s_lake+30s', … I’m using NoahMP and sf_urban_physics = 1, 1, 1 use_wudapt_lcz = 1 num_land_cat...
  11. A

    dveg option for NOAH-MP LSM

    Dear all, I'm running several exps with WRF (v. 4.4.1) + WRF-HYDRO (v. 5.2) and I'm facing some issues related to the evaluation of the 2 meter temperature in a specific region of Europe (Balkan area in details). My simulations show a difference of more than 10˚ over this region with respect...
  12. N

    Wavelength of radiation variables

    Hi, I was wondering about the wavelength at which radiation data for SWDNB and SWDOWN variables are provided. Is it provided at a particular wavelength or is it the total radiation over a range of wavelengths? Similarly for the longwave variables. Kindly refer me to the sources of it, if...
  13. S

    TC_URB vs T_2m

    Hi, I have run WRF with the SLUCM and I am just interested in understanding the variable urban canopy Temperature (TC_URB)? and whether the 2m temperature is calculated the same way as without the urban canopy model?
  14. S

    wrf top layers

    hi, is there some special tricks done in the top layers of wrf to avoid energy leakage? and if yes does this affect the top two layers or the top 5 or ?? and how does this affect the physics there?
  15. Z

    How to write full WRF running progress into a log file?

    Hi all, I have some trouble when running WRF 4.3.3 with Mibrandt & Yau 2-moment (mp=9). It crashing but doesn't make an error report in rsl file and doesn't kill task. When using the same namelist for other mp scheme (Thompson 08, Morrison 10), WRF can complete full cycle run, with some extreme...
  16. Y

    Question about aerosol-aware thompson scheme with use_aero_icbc = .false.

    Hi all, I am running WRF model (version 4.2.2) using aerosol-aware thompson scheme (mp_physics=28) with use_aero_icbc = .false. In fact, I want to use this microphysics scheme in the context of a very low aerosol number concentration. Thus, I modify the naCCN0, naCCN1, naIN0 and naIN1 in...
  17. J

    How to calculate total cloud volume based on CLDFRA, cfrac?

    Add up the layers directly?
  18. D

    wrf.exe error Segmentation fault - invalid memory reference

    Hi, experts!!! I want to run WRF V4.0 to assess the surface parameterization schemes including the unified Noah, CLM4, Pleim-Xiu, and SSiB, which driven by era5 datasets. The fomer 3 of them, the unified Noah, CLM4, Pleim-Xiu, are running well. However, the last one, SSiB, always take error...
  19. M

    segmentation fault using NBA (sfs_opt = 1 or 2)

    Hi, I experienced a segmentation fault in my LES simulation using the NBA option with sfs_opt = 1 or 2. When I turn off the option (sfs_opt = 0), the code runs to the end. Is there any known issue about NBA model ? I didn't investigate so deeply the error since I may run without NBA model but...
  20. I

    Cloud effective radius in morrisson 2 moment scheme

    Hi all, Can anyone please help me to get cloud effective radius in wrfout for Morrisson 2 moment scheme ( mp_physics=10) Thanks in advance Anas