Table of Contents - The Atmospheric Studies Group at TRC

Section 9: CALPUFF
Table 9-3 (Continued)
Control File Inputs - Input Group 3
Species List
Species-groups can be used to allow mass distributions of particles to be source-specific. In the example
provided in Table 9-2, we have defined six particle-sizes as individual species:
! CSPEC = SO2 ! !END!
! CSPEC = NOX ! !END!
! CSPEC = PMSIZE1 ! !END!
! CSPEC = PMSIZE2 ! !END!
! CSPEC = PMSIZE3 ! !END!
! CSPEC = PMSIZE4 ! !END!
! CSPEC = PMSIZE5 ! !END!
! CSPEC = PMSIZE6 ! !END!
Dry
OUTPUT GROUP
SPECIES MODELED EMITTED DEPOSITED NUMBER
NAME (0=NO, 1=YES) (0=NO, 1=YES) (0=NO, (0=NONE,
(Limit: 12 1=COMPUTED-GAS 1=1st CGRUP,
Characters 2=COMPUTED-PARTICLE 2=2nd CGRUP,
in length) 3=USER-SPECIFIED) 3= etc.)
! SO2 = 1, 1, 1, 0 !
! NOX = 1, 0, 2, 0 !
! PMSIZE1 = 1, 1, 2, 1 !
! PMSIZE2 = 1, 1, 2, 1 !
! PMSIZE3 = 1, 1, 2, 1 !
! PMSIZE4 = 1, 1, 2, 1 !
! PMSIZE5 = 1, 1, 2, 1 !
! PMSIZE6 = 1, 1, 2, 1 !
!END!
This allows each size to be modeled separately, each with its own mass emission rate and deposition
velocity. Several sources in the run could have been given different emission rates for these "species",
thereby producing unique mass distributions for their particulate emissions. Prior to reporting any
concentrations or deposition fluxes for these individual "species", however, they must be summed to
provide the total particulate concentration or deposition flux. This is done through "grouping":
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Subgroup (3b)
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! CGRUP = PM10 ! !END!
9-65