More details on mapping from MOZART-4 to CB05

Table below lists the mapping from MOZART-4 to CMAQ cb05tucl_ae6_aq speciation profile developed by Tai et al. (2008).


cb05tucl_ae6_aq MOZART-4
NO NO
NO2 NO2
CO CO
FORM CH2O
ALD2 CH3CHO
ALDx GLYALD
ETOH C2H5OH
MEOH CH3OH
ETHA C2H6
PAR C3H6 + 1.7*BIGENE + 5.0*BIGALK + 1.5*C3H8 +3.0*CH3COCH3 + 4.0*MEK + 1.0*C2H2 + 3.0*HYAC
ETH C2H4
OLE C3H6 + BIGENE
ISOP ISOP
   
   
cb05tucl_ae6_aq MOZART-4
TERP C10H16
TOL 0.3*TOLUENE
XYL 0.1*TOLUENE
SO2 SO2
NH3 NH3
BENZENE 0.6*TOLUENE
NR C2H2 + 1.5*C3H8 + 0.5*TOLUENE + 0.3*BIGENE
CH4 CH4
POC OC
PEC BC
PMOTHR PM25 - OC - BC
PMC PM10 – PM25


   



The computed vertical layer fraction (LFRAC) for one model grid cell having the largest emission is shown in figure below. The fraction of emission on the surface (Lay1F) is small (0.01) without considering the smoke smoldering effect. Pouliot et al. (2005) estimated the smoldering effect as:

        BEsize = 0.0703 ×ln(acres) + 0.3
        Sfract = 1 - BEsize

Where BEsize is buoyancy efficiency as a function of fire size, acres is fire size in the unit of acres, and Sfract the smoldering fraction. In the above example, the new Lay1F is 0.27, which is consistent with the values from Tai et al. (2008).



An example of vertical layer fraction (LFRAC) for one model grid cell with non-zero FINN emission.