Sensitivity of the Industrial Source Complex model to input parameters

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:422989

Schwede, D B ^[1]; Paumier, J O ^[2]

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1. National Oceanic and Atmospheric Administration, Research Triangle Park, NC (United States)
2. Pacific Environmental Services, Inc., Research Triangle Park, NC (United States)

In recognition of the need for a state-of-the-science model for estimating pollutant concentrations, as well as dry and wet deposition of these pollutants, the US Environmental Protection Agency (USEPA) released a new version of the Industrial Source Complex-Short Term model (ISCST2). This new version, ISCST3, integrates the algorithms for modeling simple terrain found in ISCST2 and the algorithms found in the COMPLEX I model, a USEPA screening-level model for complex terrain applications. In addition, the model includes a newly developed algorithm for modeling dry deposition of particulates, algorithms for modeling wet deposition, and a new algorithm for modeling area sources. The model is described in an updated user`s guide (USEPA, 1995). In this paper the authors examine the sensitivity of predicted concentrations, dry deposition fluxes and wet deposition fluxes to input parameters related to deposition of particles. They consider the effects of dry and wet plume depletion, the shape of the particle size distribution, the resolution of the particle size distribution, the particle density, scavenging coefficients, and the use of gridded terrain data. The results reported here should be considered preliminary until the analysis can be repeated using alternate data sets.

• OSTI ID: 422989
• Report Number(s): CONF-960127--
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
ENVIRONMENTAL TRANSPORT
I CODES
PARTICULATES
PLUMES
POLLUTION SOURCES
SENSITIVITY ANALYSIS