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input data

  1. D

    Cloud sensitivity to CCN-INP using QNWFA_QNIFA_QNBCA_SIGMA_MONTHLY.dat file

    Hi all, I will be using the aerosol-aware Thompson scheme to look at the sensitivity of clouds to initial CCN and INP concentrations. I was wondering if I am supposed to change the content of the QNWFA_QNIFA_QNBCA_SIGMA_MONTHLY.dat file to do that. If not, I would appreciate your insights on...
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    Data from Global Forecast System Files

    Good day, Does anyone know where I can download historical Global Forecast System (GFS) files? I was downloading from this website before: Index of /data/global-forecast-system/access/grid-004-0.5-degree/forecast. But the historical data available is only a few months from today (23 April...
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    IFS/EC input & RUC LSM

    Can IFS/EC data be used with RUC LSM? Should flag_sm_adj be used like with GFS or not?
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    Why are model results reset every 24 hours?

    I am conducting an experiment from October 1, 2016 to October 6, 2016. I have the following met_em files:
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    How to utilize GEFS ensemble mean data for input

    Good afternoon, Has anyone sucessfully used GEFS data for WRF model input? I'm seeing how it compares to the deterministic GFS data for forecast validation.
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    Modifying WRF 'real.exe' Simulation to Remove Typhoon Effects: Clarification on Wind Field Changes

    Hello everyone, As a beginner in WRF modeling, I have some questions regarding the simulation of typhoons using the WRF model. I successfully ran the 'real.exe' simulation on WRF, and it performed well. However, I'm trying to eliminate the effect of a typhoon while running the 'real.exe'...
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    Possibility to prepare own geographical static data (NLCD 2019)

    Hi, I was wondering if there is any way to prepare the geographical static data by my own. The most recent nlcd data provided by WPS_GEOG is nlcd 2011. NLCD 2019 have been released and revised in 2021 (doi:10.5066/P9KZCM54). How are the geographical static data of WPS_GEOG is prepared and how...
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    could not open (or static file) though it really exists

    I try to follow the MPAS tutorial online but face with some problems for days, and hope someone can help me with it. The tutorial (including geog and met data) is downloaded from MPAS Tutorial — Practice Session Guide I have already run ./init_atmosphere_model with 40962 meshes, and...
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    input data for WRF-Hydro

    I am a beginner to the WRF-Hydro model. I would like to simulate groundwater for an Indian region. WRF-Hydro is providing the groundwater bucket parameter and in India in-situ groundwater level is available. My questions are: 1. How can I compare the WRF-hydro output (groundwater bucket...
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    wrf.exe not scaling after 8 mpi process

    Hello everyone, I am running a wrf model with this publicly available data from wrf.exe completed successfully in 34 hrs using 20 mpi processes. I was trying to reduce the runtime by increasing the number of mpi...
  11. B

    " Could not find matching time in input file"

    Hi, I have been trying to run some WRF runs but keep getting the attached rsl.error (same for every processor). I have already done WRF runs with input file created in WPS from the same original input data (HadGEM2-ES) for the dates 27-3-20* till 31-5-20* which ran without an issue. But for...
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    SIGSEGV, Segmentation fault occurred while running real.exe for a Nested case

    Greetings all, I'm trying to run a nested , 5 months long case on a precompiled WRF system using ERA-5 both single and pressure level dataset and I used the following reference to download the data from:
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    WRF using ERA5 data

    Hi all, I and new in WRF and have always used NCEP data. Now, I would like to use ERA5 instead. I know I have to download ERA5 data from:!description However, I am a bit lost with all the data sets that are included. I can see "atmospheric...
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    WPS4.3 different *met_em* files have different number of metgrid levels

    I used era5 data for preprocessing, but the number of met files varies from time to time. It was 38 layers at 00 UTC, but it became 27 layers at 03 UTC, which made it unable to achieve real success because of the difference num _ metgrid _ levels.
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    What is the roles of forcing data during simulation

    Dear WRF Community, I have a question,What is the roles of forcing data during simulation. For example, when we simulate precipitation, are our results generated by downscaling the forced data?or simulations based on the water vapor flowing in from the outside of the domain?or others...
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    operational SST not available

    Dear All, Sorry if this is not the place to refer to this: The sea surface temperature has not been available for a few days, at this URL: Does anyone know if they will be available again, or have they moved elsewhere? From already thank you...
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    the source of the WPS geographical static data

    I'm working on Noah-MP LSM, so I need to prepare the static data with the help of WPS. But I wonder where are the geographical static data from. I download it from However, there is no document to introduce the data, like...
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    Why coupling a Global Climate Model in WRF (CMIP6)

    Greatings, I intend to regionalizate forecast climate change in order to capture small scale effects as topograhy and land use (dynamical downscaling). For this, i will use the WRF model to reducing spacial resolution (dinamycal downscaling). So, my issue is couple a Global Climate Model in...
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    are all ECMWF datasets interpolated?

    Dear Altruist, Can anyone please let me know the actual resolution of ECMWF original model outputs/datasets? I see datasets of various resolutions such as 0.125x0.125 0.225x0.225 0.25x0.25 0.4x0.4 0.5x0.5 0.75x0.75 1x1 1.125x1.125 1.5x1.5 2x2 2.5x2.5 3x3 N640 etc. In the documentation, i see...
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    Lake SST with ECMWF HRES

    Hi there, I am trying to do 1-day simulations using ECMWF HRES 0.1x0.1 hourly lat/lon grid data and analyze the SST over a lake on the center of my domain. I'm using Analysis product for the 00 UTC data and Forecast product for the other 23 steps. WRF Version is 4.1.5. When I run metgrid.exe...