Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Development of a Simulation Model for Estimating Ground Level Concentrations of Photochemical Pollutants. Appendix F. Description of the Computer Program.
Author Reynold, Steven D. ;
CORP Author Systems Applications, Inc., Beverly Hills, Calif.
Year Published 1971
Report Number 71SAI-26; CPA-70-148; 0913;
Stock Number PB-206 414
Additional Subjects ( Air pollution ; Atmospheric models) ; ( Smog ; Atmospheric models) ; Urban areas ; Computer programming ; Mathematical models ; Meteorological data ; Sources ; Atmospheric composition ; Atmospheric motion ; Computerized simulation ; California ; Los Angeles(California)
Library Call Number Additional Info Location Last
NTIS  PB-206 414 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 27p
The purpose of the report is to describe in a general way the various facets of a computer program that comprise the urban airshed model. Emphasis was placed on the preparation of an efficient program and on insuring the applicability of the program in any urban airshed. An airshed is essentially defined by its terrain, meteorological, and source inputs. Since these parameters are all treated as input data to the program, no difficulty should be encountered in applying the program in a variety of urban airsheds. The most cumbersome aspect of program usage is the large effort required in the preparation of the meteorological input data. Two programs are used in the Los Angeles Basin simulation effort. The main program, the Atmospheric Pollution Simulation Program, calculates pollutant concentrations as a function of space and time using source and meteorological inputs. The structural and the operational aspects of this program are discussed. Aircraft emissions are treated as input to this program via magnetic tape. The computer program which generates this tape, The Aircraft Emissions Program, is also discussed.