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Questions about the vprm parameter table in wrf vprm


New member
Hello everyone, I use the vprm parameter table when using the wrf vprm model, which contains many parameters, but I cannot know the specific format or order, which has caused me great trouble. If you are aware and willing to help me, I would greatly appreciate it.I have provided my understanding and speculation on the meaning of the parameter table below. Please be sure to let me know if it is correct. Thank you very much.


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And I am puzzled why the data in the second row are all negative. Is there a negative correlation between the photolysis rate and the incident light intensity in the vprm table included in the model, or is it a parameter setting in wrf vprm.
Hello everyone

I am now encountering a new problem when I try to modify chem/chemicals_ Vprm in init.F_ Table_ When using parameters, I recompiled WRF to make it effective, but encountered trouble and was unable to generate the four running files. However, when I used unmodified parameters, I successfully compiled, which caused great confusion for me. Do I need to recompile or modify the parameters of other files?

If you could provide some help or advice, I would greatly appreciate it! Below is my compilation and operation ./compile em_ real


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I modified the DATA vprm_table_us parameter in chem/chemics_init.F and followed the previous format to ensure minimal changes. The following is what I changed


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I found that after the modification of the compilation failed, I changed the value to the original way, and compiled again, and this time the compilation was successful, which made me very confused. I looked at the run log twice and there was a discrepancy around 332 lines. The one that failed didn't have -f90=gfortran. I'm pretty sure I entered my environment configuration after each compilation of./clean -a


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