Questions tagged [wrf-chem]

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votes
1answer
20 views

Can historical emissions data be used for a future WRF-Chem model run?

I am new to running the WRF-Chem model, so this question maybe a little elementary. I wanted to perform an year-long simulation of certain chemical species for 2019 and for that, is it sufficient to ...
2
votes
1answer
73 views

Is spin-up really required to run the WRF-Chem model and if so, what determines the time period of the spin-up?

For example, I am interested in making a simulation for some chemical species for 2019. I am planning to provide NCEP/GDAS FNL meteorological data at 0.25 degree and CAM-Chem chemical boundary layer. ...
3
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0answers
59 views

How to run WRF-VPRM

Chem Users! Is there any guide on how to run WRF-Chem with online VPRM calculations for implementing biogenic CO2 emissions? Recently I have run successfully VPRMpreproc using the WRF-VPRMpreproc ...
3
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0answers
35 views

compile WRF-VPRM to have EBIO_GEE and EBIO_RES fluxes in your output

I am working on WRF_GHG, I would like to run WRF-VPRM and I've put the vprm input files in WRF folder(vprm_input_d01_2010-01-16_00:00:00,vprm_input_d01_2010-01-17_00:00:00).but when I run wrf(./wrf....
1
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1answer
82 views

Why are all the variables ( DRY_DEP_FLUX and WET_DEP_FLUX) zero in a wrf model output in all the time steps

I am working on WRF_GHG, I would like to calculate dry and wet deposition in the dry and wet seasons for CO2 and CH4 gases. However, when I check the wrf output, I see that all the variables (...
2
votes
1answer
147 views

How to find the top level of the planetary boundary layer in WRF?

I am working on WRF_Chem, I would like to calculate the concentration of CO2 just in the Planetary boundary layer(I mean, I want to calculate CO2 from surface to top of PBL).in WRF How can I calculate ...
2
votes
1answer
77 views

regeride netcdf file to template netcdf file resoulution

how can I regrid my NetCDF file into another NetCDF file resolution? change the file number 1 or 2 or 3 (file1.nc,file2.nc,file3.nc ) into resolution template file (wrfinput_d01.nc) . I have attached ...
1
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0answers
79 views

wrf_chemi file with 30 time steps

I creat wrfchemi file for my wrf-chem, my wrfchemi file has 30 time step, frames_per_auxinput5 = 30, 30, auxinput5_inname = "wrfchemi_d", auxinput5_interval_m = 60, 60, ...
0
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0answers
196 views

Providing Edgar emission using prep_chem_source for tracers (CO2-CH4)

I am working on CO2 and CH4 by WRF-CHEM, for providing my anthropogenic emission from Edgar data base, I'm going to use the Prep_chem_source App. I would like to use Edgar data emission (as my ...
1
vote
1answer
112 views

Longitudes and latitudes are not regular in WRF-out files

I am working by WRF-ouput files (wrfout_d01_2016-01-16_00:00:00). I extracted and printed latitude and longitude data from the "wrfout_d01_2016-01-16_00:00:00", ...
2
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0answers
117 views

Create emission files by my data emission for wrf-chem

Does anybody here have any experience with creating my own wrfchemi outputs from the emissions that are in different format, txt, netcdf and grib for instance? What I want to do, basically, is to ...
3
votes
1answer
41 views

Spatial allocation of road emissions and unit conversion

I have a grid shapefile that has a resolution of 1km x 1km. This grid is then used to spatially allocate road emissions. My goal is to get the emissions in the unit: μg m-2 s-1(microgram per ...
1
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2answers
339 views

WRF/Chem: Editing NetCDF (wrfchemi files) for own emissions

Does anybody here have any experience with editing wrfchemi outputs from the prep_chem utility so that I overwrite the file with my own emissions? I am knowledgeable in python, but I am not that well ...
2
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0answers
68 views

Error of compiling the wrf-chem V3.5 model

I have gone through the link (http://www2.mmm.ucar.edu/wrf/OnLineTutorial/compilation_tutorial.php) to build wrf libraries. I installed netcdf v4.1.3, mpich v3.0.4, jasper v1.900.1, zlib v1.2.7, and ...
2
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1answer
1k views

run the WRF model using ERA5

I want to run wrf chem with ERA 5. I followed this post https://dreambooker.site/2018/04/20/Initializing-the-WRF-model-with-ERA5/. Everything works fine unless I add surface pressure to surface data ...
1
vote
1answer
744 views

WRF: EPSG code or spatial reference for Lambert conformal, Mercator and polar stereographic projections [closed]

I'm building an R package (https://github.com/ibarraespinosa/wrftools) to read namelist.wps and return a dynamic map which you can make zoom. In my case, it would be very beneficial because writing a ...
5
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2answers
519 views

How to map emission inventory from lat&lon corrdinate to WRF model grid

Here, I have a regional emission inventory, which mainly contains the varibales of lat,lon,...
2
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0answers
168 views

What is the general procedure to run WRF-chem with chen_opt=16

Is there anybody who has run WRF-chem with chem_opt=16 successfully to simulate the green house gases? According to the User guide, it can be done in this way. But ...
6
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1answer
1k views

Why is WRF-Chem not reading my emissions data?

I've been trying to run WRF-Chem with my emissions but they are not being read by WRF-Chem. RADM2. I have emissions for the whole week, so io_style_emissions = 2 ...
3
votes
1answer
105 views

What denotes a parameterization in a model? (semantics )

I know that WRF has many different uses and options, from atmospheric chemistry to uses with fires, and so on. What exactly denotes a parameterization? For example, in WRF-Chem, is the chemistry ...