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wrf-chem emissions

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    Query on the mapping of aerosol species in mozbc input file for RADM2-MADE/SORGAM chemical mechanism while using CAM-Chem output for chemical IC/BC

    Dear everyone, I ran WRF-Chem successfully with the RADM2-MADE/SORGAM chemistry option (chem_opt=11) using MOZART4 data to include chemical IC/BC in the wrfbdy and wrfinput files. But the MOZART4 data is not available after January 21, 2018. So, to simulate the recent periods, I have to use the...
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    Edit WRF dust emission and transportation scheme.

    Dear reader, For my MSc thesis i'm using WRF to model the emission and transport of dust polluted with microplastics. I'm using the AFWA dust emission scheme and the GOCART dust transportation scheme. Due to the microplastics having a different shape, size and density when compared to the dust...
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    Query regarding the calculation of Aerosol-Cloud Interaction using WRF-Chem

    Dear all, I have a small query regarding the computation of the perturbation in atmospheric variables due to aerosol-cloud interaction (ACI) using the WRF-Chem model. In the case of aerosol-radiation interaction (ARI), the perturbation in atmospheric parameters can be computed by taking the...
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    wrf-chem tutorial exercise 1:after running real.exe,when l used nvciew viewing wrfinput_d01,the value of dust_1 is all 0.

    i wonder why this happens ?how can i solve this problems? namelist.input is below. thank you very much!
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    The wrfout file does not contain any aerosol concentration variables

    Hi everyone, I want to perform WRF-Chem simulations with MOSAIC options to study aerosol mass and number concentrations in each bin. The wrfout** file does not contain any aerosol concentration variables. I am wondering if there is errors in the namelist settings (namelist.input) and...
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    What are the definition of pcg1_b_c, pcg1_f_c etc

    Dear All I am trying to understand the variables used for biomass emissions. In chem/emissions_driver.F, we have the following lines 1. What does 'pcg' stand for? 2. Is it correct that '_b_' and '_f_' are for biomass and fossil, and '_c_' and '_o_' are for C and O components, respectively...
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    Research positions open at IIT Bombay

    We have a few positions at IIT Bombay that we seek to fill quite urgently under a newly funded project (PAVITRA—Air Pollution Management and Intervention Tool for India). Please see the job profile, and interested candidates may kindly apply through the below link: 1. Project Research...
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    Can WRF-Chem apply to Antarctica?

    Hi everyone, My current research efforts concern the study of nitrate levels in Antarctica by WRF-Chem 4.4.2. (chem_opt = 202). Nevertheless, the current modeling results are significantly lower than our observed data. It is possible that the discrepancy is caused by the emission inventory used...
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    Error in running WRF-Chem using RADM2-MADE/SORGAM after making boundary conditions for nested domain using ndown

    Hello everyone, I gave a WRF-Chem run of the direct effect using the RADM2-MADE/SORGAM chemistry option. The thing is, the simulation of the parent domain was completed successfully without throwing any errors or warnings. But when I gave a simulation for the nested domain after including...
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    Large total optical depth warnings in running WRF-Chem while using RADM2-MADE/SORGAM chemistry option (chem_opt=11)

    Dear all, I am running WRF-Chem (version using RADM2-MADE/SORGAM, including aqueous reactions (chem_opt=11). I have successfully prepared anthropogenic emission input data from the EDGAR v5 MOZART dataset using anthro_emis, biogenic emission input data from the MEGAN dataset using...
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    WRF-Chem could not find matching time in wrfchemi_ for new day

    Hi all, new WRF-Chem user and first time poster. My three day, four nested domain simulation runs for the first 24 h (2023-02-22), then fails to move onto the next day, with the following error. ERROR: Could not find matching time in input file wrfchemi_d01_2023-02-22_00:00:00 It should...
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    Segmentation fault with MOZCART and Finn

    Hello all, I am using FINNv2.5 for a biomass burning simulation with WRF-Chem v 4.4.1 using MOZCART. I have attached my namelist and rsl file. However, I am running into a segmentation fault that I do not understand how to fix. Any help would be greatly appreciated. Below is part of the error...
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    How wrf.exe program reads the wrfchemi_d0* and vertical interpolation to eta level

    Dear all, I am using anthro_emis program to prepare emission file for wrfchem, but don't know how wrfchem reads the wrfchemi_d0* file and vertical interpolation to eta level. If I set the emissions_zdim_stag=34 for vetical levels, is the 34 levels same as wrf-chem eta level which I set in...
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    Query on the input file for CBMZ-MOSAIC chemistry option for running anthro_emis to generate anthropogenic emission input files (wrfchemi* files)

    Hello everyone, I want to perform WRF-Chem simulations using the CBMZ-MOSAIC chemistry option to study aerosol-cloud interaction. I want to use anthropogenic emissions from the EDGARv5_MOZART_dataset (from the EDGAR v5.0 emissions inventory speciated for the MOZART chemical mechanism) or...
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    Query on the namelist.input file for running WRF-Chem using two domains

    Dear all, I have gone through the WRF-Chem User's Guide and I have some queries on the namelist.input file before running wrf.exe. 1. 'Kemit' is either 1 or 8 on the sample name list in the tutorials provided on the WRF-Chem official website. I am using the EDGARv5_MOZART_dataset (from EDGAR...
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    Error in generating chemical lateral boundary conditions

    Dear Sir/Madam, I have gone through the 'WRF-Chem Emissions Guide'. Now, I am using mozbc to generate chemical lateral boundary conditions for WRF-Chem simulations (as described on page 38 of the emission guide). For that, I am using the MOZART-MOSAIC_4BINS input provided in the document...
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    On the use of different CBMZ, initial conditions and emissions

    Hi all, I am a new user of WRF-Chem and have several questions related with CBMZ and initialization of the simulation: 1) Can I use prep_chem and/or the programs provided by NCAR to prepare the emissions (bio, anthro) when using the CBMZ chem_opt? 2) Can I use the software mozbc to initialize...
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    Grid of emission files not recognized as lat-lon projection, causing a crash

    Dear WRF community, For my MSc thesis research I am running WRF-CHEM with emission files I had to create myself. These emission files have the following naming convention: <wrfchemi_d01_yyyy-mm-dd_HH:MM:SS>. This particular WRF-CHEM simulation covers 24-06-2018 up to 01-01-2018, thus running for...
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    p_top_request and input data

    Hello WRF Community, I was wondering if someone could explain the relationship between p_top_request and the ERA5 input data height? I am working on a project that needs to resolve up to the stratosphere and possibly mesosphere and I'm not sure if my p_top_request value needs to change...
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    Error in compiling the prep_chem_sources code

    Hello everyone, I want to set up the executable file for PREP-CHEM-SRC (prep_chem_sources_RADM_WRF_FIM.exe) to prepare the chemistry input files for running WRF-Chem. For that, I have downloaded the tar.gz file 'prep_chem_sources_v1.5_24aug2015.tar.gz' from the WRF-Chem ftp site...