Table of Contents - The Atmospheric Studies Group at TRC

Section 9: CALPUFF
Table 9-33 (Continued)
BCON.DAT File Inputs
Variable Type Description Sample
Values
(Input Group 3a - Air-Mass Definiton)
AIRMASS
character
*12
Air-mass name, used to coordinate inputs
urban
IAM integer Air-mass index, used to store properties 1
HTBC(IAM) real array Top of layer for air-mass type 1500.
CONBC
(1 to NSPECBC,
IAM)
real array Concentration of each species for Air-mass type .1, .11., .34,
.52,.6
(Input Group 3b - Variable Air-Mass Concentration Factors)
AIRMASS
character
*12
Air-mass name, used to coordinate inputs
urban
IVARY integer Type of scale factor variation (diurnal, monthly, etc.)
0 = Constant
1 = Diurnal cycle
(24 scaling factors: hours 1-24)
2 = Monthly cycle
(12 scaling factors: months 1-12)
3 = Hour & Season
(4 groups of 24 hourly scaling factors,
where first group is DEC-JAN-FEB)
4 = Speed & Stab.
(6 groups of 6 scaling factors, where
first group is Stability Class A,
and the 6 speed classes have upper
bounds (m/s) defined in Group 12)
5 = Temperature
(12 scaling factors, where temperature
classes have upper bounds (C) of:
0, 5, 10, 15, 20, 25, 30, 35, 40,
45, 50, 50+)
2
QFAC real array Array of concentration scaling factors for this air-mass -
and the species indicated
The variables in Input Group 3b are entered for the number of air-mass / species combination indicated by
9-209