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jordanschnell said:Hi Neeldip,
The first method is what you should try to use as yes, there are different variables in the restart vs. input file.
As for step 4. If a file named "wrf_chem_input_d01" is in the run directory, with chem_in_opt = 1 and io_form_auxinput12 = 2, the model will use that file to initialize chemistry.
So after you have created the wrfinput_d01 file with chemistry on, simply
ln -s wrfinput_d01 wrf_chem_input_d01
Jordan