Hi All,
I am trying to perform some sensitivities using the CMAQ by perturbing the emissions. It seems like that VDEMIS variable is the best target to do so. But, I am wondering what species this variable refers to? It sounds like it starts with N_GC (global compounds?). But I am not sure what exactly they are.
Thanks!
Amir
If you are using a recent version of CMAQ (v5.0-5.2), you could perturb emissions through the namelist (via changing the EMIS_FAC value) or by preprocessing your emission files with combine (https://github.com/USEPA/CMAQ/tree/5.2.1/POST/combine). The combine approach will be a little more transparent in terms of what is modified, but will require storage of additional inputs.
In CMAQ v5.3, this type of task will be even easier with an emission control file.
Thanks Havala for your answer!
I am glad that EPA is going to include an emission control file.
I dig into CMAQ scripts (opconc.F), and I found that VDEMIS is in this order for the CB05/AERO6 mechanism:
1 ( 1) NO2
2 ( 2) NO
3 ( 3) O
4 ( 4) O3
5 ( 5) NO3
6 ( 6) O1D
7 ( 7) OH
8 ( 8) HO2
9 ( 9) N2O5
10 ( 10) HNO3
11 ( 11) HONO
12 ( 12) PNA
13 ( 13) H2O2
14 ( 14) XO2
15 ( 15) XO2N
16 ( 16) NTR
17 ( 17) ROOH
18 ( 18) FORM
19 ( 19) ALD2
20 ( 20) ALDX
21 ( 21) PAR
22 ( 22) CO
23 ( 23) MEO2
24 ( 24) MEPX
25 ( 25) MEOH
26 ( 26) HCO3
27 ( 27) FACD
28 ( 28) C2O3
29 ( 29) PAN
30 ( 30) PACD
31 ( 31) AACD
32 ( 32) CXO3
33 ( 33) PANX
34 ( 34) ROR
35 ( 35) OLE
36 ( 36) ETH
37 ( 37) IOLE
38 ( 38) TOL
39 ( 39) CRES
40 ( 40) TO2
41 ( 41) TOLRO2
42 ( 42) OPEN
43 ( 43) MGLY
44 ( 44) CRO
45 ( 45) CAT1
46 ( 46) CRON
47 ( 47) CRNO
48 ( 48) CRN2
49 ( 49) CRPX
50 ( 50) OPO3
51 ( 51) CAO2
52 ( 52) OPAN
53 ( 53) XYLMN
54 ( 54) XYLRO2
55 ( 55) NAPH
56 ( 56) PAHRO2
57 ( 57) ISOP
58 ( 58) ISPD
59 ( 59) TERP
60 ( 60) SO2
61 ( 61) SULF
62 ( 62) ETOH
63 ( 63) ETHA
64 ( 64) CL2
65 ( 65) CL
66 ( 66) HOCL
67 ( 67) CLO
68 ( 68) FMCL
69 ( 69) HCL
70 ( 70) CLNO2
71 ( 71) BENZENE
72 ( 72) BENZRO2
73 ( 73) SESQ
74 ( 74) SOAALK
75 ( 75) H2NO3PIJ
76 ( 76) H2NO3PK
77 ( 77) VLVPO1
78 ( 78) VSVPO1
79 ( 79) VSVPO2
80 ( 80) VSVPO3
81 ( 81) VIVPO1
82 ( 82) VLVOO1
83 ( 83) VLVOO2
84 ( 84) VSVOO1
85 ( 85) VSVOO2
86 ( 86) VSVOO3
87 ( 87) PCVOC
Amir