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Why the concentrations of PM10 and PM2.5 in the wrfout file are identical with chem_opt=202 ?

hliu20

New member
Hi everyone,
I am currently running WRF-CHEM 4.2 with chem_opt=202, emiss_opt=3, and emiss_inpt_opt=111. I use emiss_opt=3 because the anthropogenic emission data I downloaded, MEIC, is for the RADM2 mechanism. I have observed that the concentration of PM10 in the wrfchemi file is greater than that of PM2.5, but in the wrfout file, the results for PM10 and PM2.5 are very similar. Does anyone know the reason for this? Are my emiss_opt and emiss_inpt_opt settings incorrect?
The linked files are the namelist.input, the concentrations of PM10, PM2.5I, and PM2.5J in the wrfchemi file, and the concentrations of PM10 and PM2.5 in the wrfout file.
Any suggestions are greatly appreciated.
 

Attachments

  • namelist.input
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  • wrfchemi-PM10.jpg
    wrfchemi-PM10.jpg
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  • wrfchemi-PM25I.jpg
    wrfchemi-PM25I.jpg
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  • wrfchemi-PM25J.jpg
    wrfchemi-PM25J.jpg
    301.8 KB · Views: 5
  • wrfout-PM10.jpg
    wrfout-PM10.jpg
    400.4 KB · Views: 6
  • wrfout-PM25.jpg
    wrfout-PM25.jpg
    346.1 KB · Views: 6
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