Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title User's Guide for RAM: Volume II Data Preparation and Listings /
Author Turner, D. Bruce,
Other Authors
Author Title of a Work
Novak, Joan Hrenko.
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC.
Publisher U.S. Environmental Protection Agency, Meteorology and Assessment Division, Environmental Sciences Research Laboratory,
Year Published 1978
Report Number EPA 600/8-78-016B
Stock Number PB-294 792
OCLC Number 32076804
Subjects Air quality--Computer programs--Handbooks, manuals, etc. ; Air--Pollution--Computer programs--Handbooks, manuals, etc.
Additional Subjects Air pollution ; Programming manuals ; Atmospheric diffusion ; Concentration(Composition) ; Urban areas ; Air flow ; Plumes ; Mathematical models ; Computer programs ; Fortran ; Gaussian plume models ; Air quality ; Point sources ; Nonpoint sources ; RAM model ; RAMQ computer program ; RAMMET computer program ; RAM computer program ; RAMF computer program ; RAMR computer program ; RAMFR computer program ; CUMF computer program ; RAMBLK computer program
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600/8-78/016b Headquarters Library/Washington,DC 06/04/2013
EJBD  EPA 600-8-78-016b Headquarters Library/Washington,DC 01/23/2014
EMBD  EPA/600/8-78/016B NRMRL/GWERD Library/Ada,OK 03/03/1995
ESAD  EPA 600-8-78-016B Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-294 792 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation 232 pages
The information presented in this user's guide is directed to air pollution scientists having an interest in applying air quality simulation models. RAM is a method of estimating short-term dispersion using the Gaussian steady-state model. These algorithms can be used for estimating air quality concentrations of relatively nonreactive pollutants for averaging times from an hour to a day from point and area sources. The algorithms are applicable for locations with level or gently rolling terrain where a single wind vector for each hour is a good approximation to the flow over the source area considered. Calculations are performed for each hour. Hourly meteorological data required are wind direction, wind speed, temperature, stability class, and mixing height. Emission information required of point sources consists of source coordinates, emission rate, physical height, stack diameter, stack gas exit velocity, and stack gas temperature. Emission information required of area sources consists of southwest corner coordinates, source side length, total area emission rate and effective area source-height. Computation time is kept to a minimum by the manner in which concentrations from area sources are estimated using a narrow plume hypothesis and using the area source squares as given rather than breaking down all sources into an area of uniform elements. Options are available to the user to allow use of three different types of receptor locations: (1) those whose coordinates are input by the user, (2) those whose coordinates are determined by the model and are downwind of significant point and area sources where maxima are likely to occur, and (3) those whose coordinates are determined by the model to give good area coverage of a specific portion of the region. Computation time is also decreased by keeping the number of receptors to a minimum. Volume II presents RAM example outputs, typical run streams, variable glossaries, and Fortran source codes.
Distributed to depository libraries in microfiche. Shipping list no.: 92-1333-M.