SAI (Systems Applications, Incorporated) Urban Airshed Model. Model
This magnetic tape contains the FORTRAN source code, sample input data, and sample output data for the SAI Urban Airshed Model (UAM). The UAM is a 3-dimensional gridded air-quality simulation model that is well suited for predicting the spatial and temporal distribution of photochemical pollutant concentrations in an urban area. The model is based on the equations of conservation of mass for a set of reactive pollutants in a turbulent-flow field. To solve these equations, the UAM uses numerical techniques set in a 3-D finite-difference grid array of cells, each about 1 to 10 kilometers wide and 10 to several hundred meters deep. As output, the model provides the calculated pollutant concentrations in each cell as a function of time. The chemical species of prime interest included in the UAM simulations are O3, NO, NO/sub 2/ and several organic compounds and classes of compounds. The UAM system contains at its core the Airshed Simulation Program that accesses input data consisting of 10 to 14 files, depending on the program options chosen. Each file is created by a separate data-preparation program. There are 17 programs in the entire UAM system. The services of a qualified dispersion meteorologist, a chemist, and a computer programmer will be necessary to implement and apply the UAM and to interpret the results. Software Description: The program is written in the FORTRAN programming language for implementation on a UNIVAC 1110 computer under the UNIVAC 110 0 operating system level 38R5A. Memory requirement is 80K.
- Research Organization:
- Environmental Protection Agency, Research Triangle Park, NC (USA). Div. of Meteorology
- OSTI ID:
- 6596867
- Report Number(s):
- PB-87-173217/XAB; EPA-600/8-85/077C
- Resource Relation:
- Other Information: Source tape is in the ASCII character set. This restricts preparation to 9 track, one-half inch tape only. Identify recording mode by specifying density only. Call NTIS Computer Products if you have questions. Price includes documentation, PB--85-191575, and PB--85-191567
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AIR POLLUTION
MATHEMATICAL MODELS
URBAN AREAS
MAGNETIC TAPES
NITROGEN DIOXIDE
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
SMOG
CHALCOGENIDES
CHEMICAL REACTIONS
MAGNETIC STORAGE DEVICES
MEMORY DEVICES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)