Table of Contents - The Atmospheric Studies Group at TRC

Section 9: CALPUFF
Table 9-32 (Continued)
Boundary Condition File (BCON.DAT)
INPUT GROUP: 5 -- Air-Mass Types (Arbitrary time variation)
--------------
Use this Input Group to describe temporal variations in all air-mass
properties for air-mass types NOT given in Input Group 3.
-------------
Subgroup (5a)
-------------
a
AIR-MASS DEFINITION
--------------------
Type
No.
------
! AIRMASS = regional !
! X = 2 ! !END!
--------
a
Data for each air-mass type are treated as a separate input subgroup
and therefore must end with an input group terminator.
The TYPE is an INTEGER from 1 to NTYPEBC1+NTYPEBC2, with no duplications;
used for mapping air-mass types to boundary of computational grid.
-------------
Subgroup (5b)
-------------
EXPLICIT TIME-VARYING AIR-MASS PROPERTIES
------------------------------------------
Records following the final group terminator below provide the
layer-top and concentration(s) for each air-mass type identified
in Subgroup (5a), for the simulation period identified below.
The concentration for each species listed in Input Group 2 must
be provided in order, for each air-mass.
Simulation Period
-----------------
The date is a combined year and Julian day (YYYYJJJ).
The hour is identified by the time at the END of the hour (00-23 LST).
Starting date : (IBDAT) -- No default ! IBDAT = 1988189 !
Starting hour : (IBHH) -- No default ! IBHH = 01 !
Ending date : (IEDAT) -- No default ! IEDAT = 1988190 !
Ending hour : (IEHH) -- No default ! IEHH = 00 !
Data Record Structure
---------------------
The first record of each time period defines the range of hours
for which the concentration data are valid by listing the beginning
date(YYYYJJJ) and hour(HH), and the ending date and hour. The hour
is denoted by the time at the end of the hour (00-23 LST).
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