CMAQ-DDM-3D sensinput file setting about DDM3D_ES(emissions split into categories) sensitivity

#1

Hi,all
I am using CMAQ_5.2-DDM-3D.I want to simulate the sensitivity of PM2.5 to NOx emissions from motor vehicles.So,first,I set DDM3D_ES to Y in run_cctm.csh script. Second,I set EGRIDFILE1 to /home/hml/ddm/model/data/EMISS/2019042100/emis.d03.2019042116.nc.transportation.Third,I set sensinput.cmas.dat to
ENX
EMIS
GRID
1
EGRIDFILE1
SPECIES
NO
NO2

END

I want to know if I set this up, right?
And,I have two questions about simulating the sensitivity of PM2.5 to NOx emissions from motor vehicles.
first,do I need to make a document on motor vehicle emissions (including only emissions from motor vehicles)? as “emis.d03.2019042116.nc.transportation” ?
second,motor vehicle emissions are linear sources. I set “GRID” below EMIS line in sensinput.cmas.dat,is it right?

Thank you all for your time!

#2

Yes, your sensinput setup is correct. You just need to make sure you have the right indents for each line - just mimic what the example file has.

“first” - You need to create a file of emission that you want to calculate the sensitivity to. Note that this file will not be counted by the base CMAQ model.

“second” - You set “GRID” for gridded files. Gridded files are emissions that are not point sources (EGUs, for example, are typically point sources).

1 Like
#3

Thank you for your reply. I really appreciate your help!