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RECORD NUMBER: 605 OF 869

Main Title RTDM 3.2: Rough Terrain Diffusion Model. EPA/ORD (Environmental Protection Agency/Office of Research and Development) Air Quality Simulation Model.
Author Mersch, J. ;
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC. Meteorology and Assessment Div.
Publisher 1 Aug 89
Year Published 1989
Report Number EPA/SW/DK-89/168;
Stock Number PB90-500372
Additional Subjects Models-Simulation ; Air pollution ; Atmospheric diffusion ; Terrain ; Plumes ; Diskettes ; Air quality ; Point sources ; Gaussian plume models ; Concentration(Composition) ; L=Fortran ; H=IBM 3090
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB90-500372 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 1 diskette
Abstract The rough terrain diffusion model (RTDM3.2) is a sequential Gaussian plume model designed to estimate ground-level concentrations in rough (or flat) terrain in the vicinity of one or more co-located point sources. It is designed for applications involving chemically stable atmospheric pollutants and is best suited for elevation of buoyant plume behavior within about 15 km from the source(s). RTDM has special algorithms to deal with plume behavior in complex terrain. Software Description: The software is written in the FORTRAN programming language for implementation on an IBM model 3090 computer. The model is distributed on a 5 1/4-inch IBM/PC-compatible diskette. Data is in compressed format but a dearchive utility is included.
Availability Notes The model is contained on 5 1/4-inch, double density (360K) diskettes, compatible with the IBM PC microcomputer, ready for uploading to an IBM 3090 computer. Price includes documentation, PB88-171467.
NTIS Title Notes Model-Simulation.
Category Codes 68A#; 91A; 43F; 62
NTIS Prices CP D01
Primary Description 600/09
Document Type NT
Cataloging Source NTIS/MT
Control Number 936222034
Origin NTIS
Type CAT