Main Title |
User's Guide to the Texas Climatological Model. |
CORP Author |
Texas Air Control Board, Austin.;Environmental Protection Agency, Washington, DC. |
Year Published |
1980 |
Report Number |
EPA/DF-81/001B; |
Stock Number |
PB81-164626 |
Additional Subjects |
Air pollution ;
Atmospheric diffusion ;
Mathematical models ;
Manuals ;
Plumes ;
Concentration(Composition) ;
UNAMAP models ;
Texas Climatological Model ;
Air quality ;
User manuals ;
Gaussian plume models ;
Point sources ;
Area sources
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB81-164626 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
186p |
Abstract |
The Texas Climatological Model Version 2 (TCM-2) (Part of the UNAMAP version 4 collection) is a Fortran computer program designed to predict ground-level, long-term concentrations of atmospheric pollutants. The Model uses techniques that require much less computer time than most climatological models. Predictions are based upon the steady-state Gaussian plume hypothesis, Briggs plume rise formulations, Pasquill-Gifford dispersion coefficient approximations, and exponential pollutant decay. Long-term ground-level concentrations may be determined for one or two pollutants. Any number of point sources and area sources may be input to the model. Long-term meteorological conditions are input by a meteorological joint frequency function which gives the probability of occurrence for each of 576 different cases. Five scenarios of meteorological data and source emission inventories may be input to the model for one run. Plume rise is calculated by the most representative of six different methods and optionally can use only final rise. An option allows the simulation of dispersion found in urban areas. TCM-2 is well suited for, but not limited to, the following applications: Stack parameter design studies; Fuel conversion studies; Monitoring network design; Control strategy evaluation for SIP; Evaluation of the impact of new sources or source modifications for permit application review; Control technology evaluation; and Prevention of significant deterioration. |
Supplementary Notes |
For system on magnetic tape, see PB81-164600. |
NTIS Title Notes |
Final rept. |
PUB Date Free Form |
Aug 80 |
Category Codes |
13B; 4A; 68A; 55B |
NTIS Prices |
PC A09/MF A01 |
Primary Description |
100/00 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
323793098 |
Origin |
NTIS |
Type |
CAT |