Passing along the metadata in the US EPA's CMAQ model relevant to CRACMM, which Havala Pye (who visited NOAA/NCAR last week) passed on to us:
I can work on assimilating the CRACMM metadata in a specific format you want for linking to MICM. Also, I am familiar with the following files in CMAQ, so feel free to reach out with any questions you have after reviewing the following files containing relevant metadata.
The CRACMM metadata resides across several locations in the CMAQ GitHub repository:
(Note: aerosol species may have I, J, K (Aitken, Accumulation, and Coarse modes) on the end for their size mode(s) or may not be in the code.)
Reactions with rates (includes heterogenous reactions with a rate that is labeled with a string e.g., ! GLY and MGLY uptake
GLY = AGLYJ # 1.0~;
MGLY = AGLYJ # 1.0~;): https://github.com/USEPA/CMAQ/blob/main/CCTM/src/MECHS/cracmm1_aq/mech_cracmm1_aq.def
Heterogenous rate formulas (match up with string in previous file i.e. "HETERO" keyword: KHETERO, e.g., KHETERO( :,:,:,: ) ! heterogeneous rx rates,
! [ppm**(RXN Order-1)*min]**-1 ) are here: https://github.com/USEPA/CMAQ/blob/main/CCTM/src/aero/aero6/AEROSOL_CHEMISTRY.F
Gas-phase species molecular weights and names of dry dep and wet dep surrogates: https://github.com/USEPA/CMAQ/blob/main/CCTM/src/MECHS/cracmm1_aq/GC_cracmm1_aq.nml
Aerosol species molecular weights (and deposition surrogates which are “mass” and a class for wet dep; note species may exist in Aitken, Accumulation, or Coarse (I,J,K) modes based on Trye(T)/False(F) flag) https://github.com/USEPA/CMAQ/blob/main/CCTM/src/MECHS/cracmm1_aq/AE_cracmm1_aq.nml
Henry’s law coefficients starting at line 174 (the “subname” in this file maps to the “WET-SCAV SURR” in the GC_cracmm1_aq.nml) : https://github.com/USEPA/CMAQ/blob/main/CCTM/src/cloud/acm_ae6/hlconst.F
SOA volatilities, OM:OC, O:C, etc starting at line 113: https://github.com/USEPA/CMAQ/blob/main/CCTM/src/aero/aero6/SOA_DEFN.F
Aerosol densities, charge, and other properties starting at line 240 here: https://github.com/USEPA/CMAQ/blob/main/CCTM/src/aero/aero6/AERO_DATA.F
Dry deposition properties such as relative rate of reaction, f0, molar volume, mass accommodation coeff for STAGE( Surface Tiled Aerosol and Gas Exchange (STAGE) is the dry deposition scheme used in CMAQ with CRACMM) treatment for gas-phase species: https://github.com/USEPA/CMAQ/blob/main/CCTM/src/depv/stage/CMAQ_Control_STAGE.nml
Thanks
Quazi
dwfncar
commented
8 months ago
Hi Matt and David,
Passing along the metadata in the US EPA's CMAQ model relevant to CRACMM, which Havala Pye (who visited NOAA/NCAR last week) passed on to us:
I can work on assimilating the CRACMM metadata in a specific format you want for linking to MICM. Also, I am familiar with the following files in CMAQ, so feel free to reach out with any questions you have after reviewing the following files containing relevant metadata.
The CRACMM metadata resides across several locations in the CMAQ GitHub repository:
(Note: aerosol species may have I, J, K (Aitken, Accumulation, and Coarse modes) on the end for their size mode(s) or may not be in the code.)
Reactions with rates (includes heterogenous reactions with a rate that is labeled with a string e.g., ! GLY and MGLY uptake