Table of Contents - The Atmospheric Studies Group at TRC

Section 9: CALPUFF
BCKNH3(12) real Monthly background ammonia concentration in ppb
(Used only if MCHEM = 1 or 3, or if MCHEM = 6 or 7
and MNH3 =0)
RNITE1 real Nighttime SO 2 loss rate in percent/hour
(Used only if MCHEM = 1, 6, or 7)
RNITE2 real Nighttime NO x loss rate in percent/hour
(Used only if MCHEM = 1)
12*10.
0.2
2.0
Table 9-3 (Continued)
CALPUFF Control File Inputs - Input Group 11
Chemistry Parameters
Variable Type Description Default Value
RNITE3 real Nighttime HNO 3 formation rate in percent/hour
(Used only if MCHEM =1)
MH2O2 integer Control variable for the input of hourly ozone data
used in the chemical transformation module
(Used only if MCHEM = 6 or 7 and MAQCHEM =1)
0 = use a monthly background H 2 O 2 value
1 = use H 2 O 2 concentrations from
the H2O2.DAT data file
2.0
1
BCKH2O2(12)
Real
array
Monthly background H 2 O 2 concentration in ppb
(Used only if MAQCHEM=1 and MH2O2 or if
(MH2O2=1 and all hourly H 2 O 2 data are missing))
12*1.
BCKPMF(12) real array Data for Secondary Organic Aerosol (SOA) (Used
only if MCHEM=4 or 7). For MCHEM = 4 SOA
uses monthly values of fine particulate concentration
in ug/m 3
for Clean Continental (default)
for Clean Marine (surface) (12*0.5)
for Urban – low biogenic (controls present) (12*30)
for Urban – high biogenic (controls present) (12*60)
Regional Plume (12*20)
Urban – (no controls present) (12*100)
12*1
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