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6 votes
Accepted

What denotes a parameterization in a model? (semantics )

As defined in the AMS glossary, a parameterization is a simplification of one or several processes in a model. I add that a parameterization commonly adds an error and increases the uncertainty in the ...
daniel.heydebreck's user avatar
6 votes

regeride netcdf file to template netcdf file resoulution

Disclaimer: I have not looked at your particular files. You can regrid the data in Python using the NetCDF-4 module. If you want to interpolate vertically, you can use the WRF module. And for ...
BarocliniCplusplus's user avatar
4 votes

Longitudes and latitudes are not regular in WRF-out files

I am not sure about your R code or your snippet of data. However, you could do an ncdump on the file and direct the output to text to get it "from the horses mouth" so to speak. In general, the lat/...
f.thorpe's user avatar
  • 13.8k
4 votes

Why is WRF-Chem not reading my emissions data?

I could run model, i just had to change a bit the namelist. I added three parameters:io_form_auxinput5 = 2,auxinput5_inname = 'wrfchemi_d$<domain>$_$<date>$' and frames_per_auxinput5 ...
Sergio's user avatar
  • 412
2 votes

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

Well, the variable PBLH should tell you the PBL height. If you want the level that the PBL is, I suggest modifying the Registry.EM_COMMON file. Perhaps I can refer ...
BarocliniCplusplus's user avatar
2 votes

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

I would suggest using cdo for your purpose. At least for variables, which values are independent of the grid cell size, one can use cdo. cdo cdo (Climate Data Operators) is a command line program to ...
daniel.heydebreck's user avatar
2 votes
Accepted

Spatial allocation of road emissions and unit conversion

You have got your emissions over a square kilometer. To get to square meters you divide by 1000000 since $1km^2=10^6m^2$.
Christoph's user avatar
  • 994
2 votes
Accepted

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

You can try the R package eixport, with wrf_put ...
Sergio's user avatar
  • 412
1 vote
Accepted

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

I will preface this by saying I do not use WRF-Chem myself, and am more familiar with SMOKE/CMAQ using the EPA NEI modeling platforms (not EDGAR). A comprehensive emissions inventory is not prepared ...
f.thorpe's user avatar
  • 13.8k
1 vote
Accepted

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

Generally, spin up is necessary. To give context, look at how the model initializes. Does that look anything like a real chemical field? If you don’t have the eye for such things, examine the RMSE or ...
BarocliniCplusplus's user avatar
1 vote

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

Well I can see one major reason the dry deposition is not working- the namelist variable for gas deposition (gas_drydep_opt) is turned off. I am not entirely sure how the wet deposition works, though ...
BarocliniCplusplus's user avatar
1 vote

run the WRF model using ERA5

Did you use the right Vtable? That error message is saying that the soil temperature variable is missing/couldn't be read.
BarocliniCplusplus's user avatar
1 vote
Accepted

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

Spatial reference systems are coordinate systems that can be geographical coordinate systems defined on a model ellipsoid or projection coordinate systems. A projection coordinate system is defined ...
Dima Chubarov's user avatar
1 vote

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

using R: Alright, As you have data with different resolution, I would suggest you to convert your data to raster and resample to match the grid cell of your wrf_inputs. Take care of mass ...
Sergio's user avatar
  • 412

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