Computer program predicts, from readily available meteorological data, concentration and dosage fields downwind from ground-level and elevated sources of toxic fuel emissions. Mathematical model is applicable to hot plume rise from industrial stacks and should also be of interest to air pollution meteorologists

Bjorklund, J. R.

Cramer, H. E.

Dumbauld, R. K.

Record, F. A.

English

NASA Technical Reports Server

September 1975	 S	
. 	 B75-10198 
NASA TECH BRIEF 
Marshall Space Flight Center 
NASA Tech Briefs announce new technology derived from the U.S. space program. They are issued to encourage 
commercial application. Tech Briefs are available on a subscription basis from the National Technical Information 
Service, Springfield, Virginia 22151. Requests for individual copies or questions relating to the Tech Brief program may 
be directed to the Technology Utilization Office, NASA, Code KT, Washington, D.C. 20546. 
Handbook for Estimating Toxic Fuel Hazards 
The problem: 
A method is needed to predict, from readily-
available meteorological data, the concentration and 
dosage fields downwind from ground-level and 
elevated sources of toxic fuel emissions. 
The solution: 
A mathematical model has been made of the 
physical and positional characteristics of airborne 
substances. It includes the attributes of the atmos-
phere around the source of the substances. 
How it's done: 
The airborne source material is modeled by 
mathematical representations of concentration levels 
and distributions, dosage levels and distributions, 
height of the source cloud, decay coefficients, settling 
velocity, and positional parameters. Atmospheric 
conditions are modeled by mathematical representa-
tions of wind speed at various heights, cloud travel, 
standard deviation of azimuth wind angle, azimuth 
wind direction shear, standard deviation of wind 
deviation angle, and wind speed shear. Though
developed for toxic fuel emissions, the package is 
applicable to hot plume rise from industrial stacks 
and should also be of interest to air pollution 
meteorologists. 
Notes: 
1. The program is written in ASA FORTRAN V for 
the UNIVAC 1100-series machine but should exe-
cute under most high-level FORTRAN compilers. 
2. Inquiries concerning this program should be 
directed to: 
COSMIC 
112 Barrow Hall 
University of Georgia 
Athens, Georgia 30601 
Reference: MFS-21 114 
Source: R. K. Dumbauld, J. R. Bjorklund,
H. E. Cramer, and F. A. Record of

GCA Corp.
(MFS-21 114) 
Categories: 04 (Materials) 
09 (Mathematics and 
Computer Sciences) 
03 (Physical Sciences) 
This document was prepared under the sponsorship of the National 	 Government assumes any liability resulting from the use of the 
Aeronautics and Space Administration. Neither the United States 	 informaton contained in this document, or warrants that such use 
Government nor any person acting on behalf of the United States	 will be free from privately owned rights.
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Handbook for estimating toxic fuel hazards

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