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U.S. Department of Energy
Office of Scientific and Technical Information

LONGZ air diffusion model (for microcomputers). Model-Simulation

Technical Report ·
OSTI ID:270102
LONGZ is designed to calculate the long-term pollutant concentration produced at a large number of receptors by emissions from multiple stack, building, and area sources. LONGZ uses statistical wind summaries to calculate long-term (seasonal or annual) average concentrations. The model is applicable in areas of both flat and complex terrain, including areas where terrain elevations exceed stack-top elevations. The program requires random-access mass storage capability. SHORTZ is designed to calculate the short-term pollutant concentration produced at a large number of receptors by emissions from multiple stack, building, and area sources. It uses sequential short term (usually hourly) meteorological inputs to calculate concentrations for averaging times ranging from 1 hour to 1 year. The model is applicable in areas of both flat and complex terrain, including areas where terrain elevations exceed stack-top elevations. The program requires random-access mass storage capability. An associated compatible meteorological data processor is METZ.
Research Organization:
Environmental Protection Agency, Washington, DC (United States)
OSTI ID:
270102
Report Number(s):
PB--96-501994/XAB
Country of Publication:
United States
Language:
English