Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title User's guide for RAM /
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 Environmental Protection Agency, Office of Research and Development, Environmental Sciences Research Laboratory ; For sale by the National Technical Information Service,
Year Published 1978
Report Number EPA-600/8-78-016a; EPA-600/8-78-016b
Stock Number PB294791
OCLC Number 04377595
ISBN pbk.
Subjects Gaussian processes--Computer programs. ; Air--Pollution--Mathematical models. ; Air--Pollution--Handbooks, manuals, etc. ; Algorithms.
Additional Subjects Air pollution ; Atmospheric diffusion ; Concentration(Composition) ; Urban areas ; Terrain ; Wind velocity ; Atmospheric temperature ; Turbulence ; Air flow ; Mathematical models ; Plumes ; Algorithms ; Computer programming ; Gaussian plume models ; Air quality ; RAM model ; Point sources ; Nonpoint sources
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EIAD  EPA-600/8-78-016a-b Region 2 Library/New York,NY 03/28/1998 DISPERSAL
EJAD  EPA 600/8-78-015 Region 3 Library/Philadelphia, PA 10/01/1993
EJBD ARCHIVE EPA 600/8-78-016a Headquarters Library/Washington,DC 06/04/2013
EJBD  EPA 600-8-78-016a c.1 Headquarters Library/Washington,DC 01/23/2014
EKBD  EPA-600/8-78-016a-b Research Triangle Park Library/RTP, NC 02/27/2004
EMBD  EPA/600/8-78/016A NRMRL/GWERD Library/Ada,OK 02/17/1995
ESAD  EPA 600-8-78-016A Region 10 Library/Seattle,WA 06/01/2016
NTIS  PB-294 791 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation v. ; 28 cm.
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 I considers the use and capabilities of RAM, its basis, the organization of the computer program, and data requirements.
Issued Nov. 1978. Includes bibliographical references (p. 52-53).
Contents Notes
v. l. Algorithm description and use -- v. II. Data preparation and listings.