Hello,
I was looking through the cmaq-12us1-cracmm2-modeling-platform-2022 data repository in the CMAS ware house (https://dataverse.unc.edu/dataset.xhtml?persistentId=doi:10.15139/S3/BDLBTW) and I noticed that the 2022 CMAQ_Control_DESID_cracmmv2.nml file has several differences compared to the default one available on the CMAQv5.5 GitHub page (both files included below). For example, the 2022 file shows a 1:1 mapping of VROC and AROC emitted species to themselves with no change in species name. In comparison, the original file has a 1:1 mapping of ROC to VROC species. What exactly are the differences between these methods?
Additionally, I noticed that the default file applies POA volatility profiles to PMN species, while the 2022 version does not (screenshots below). I know one of the main changes from cracmmv1 to cracmmv2 is that POA volatility profiles are now applied upstream and shouldn’t be applied in DESID. If using cracmmv2 speciated emissions in CMAQ, does it matter if this section is included or not? Any clarification is appreciated. Thanks!
screenshot from the 2022 file:
it
screenshots from the default file:
CMAQ_Control_DESID_cracmm2_2022r1.txt (18.6 KB)
CMAQ_Control_DESID_cracmm2.txt (42.3 KB)