Citation:

Binkowski, F.S. AND J.K.S. Ching. MODELING FINE PARTICULATE MASS AND VISIBILITY USING THE EPA REGIONAL PARTICULATE MODEL. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/A-95/143 (NTIS PB96139100), 1996.

Description:

Particulate matter in the atmosphere can adversely impact air quality and human health, as well as significantly affect the environment. articles in the submicrometer size range, when inhaled, may pose certain health hazards. articles in this size range also scatter light, causing reduction in visibility, thus diminishing the recreational value of national parks and other remote locations, and influencing the radiative budget of the earth-atmosphere system. urrently, the state of knowledge of atmospheric aerosols points toward a consensus that much, if not most, non-primary submicrometer particles are formed from gas-t0-particle conversion process in the atmosphere (Finlayson-Pitts and Pitts, 1986; Seinfeld, 1986; Warneck, 1988, and Pandis et al., 1995). tudies of climate change and passage of the Clean Air Act Amendments (CAAA) of 1990 have created strong interest in the mathematical modeling of how stratospheric aerosols behave, and their relationship to both neutral and anthropogenic sources of aerosol The Regional Particulate Model (RPM) described in Binkowski and Shanker (1995) and Shanker and Binkowski (1994) is being developed as a tool to investigate these relationships. his model is based upon the Regional Acid Dispersion Model (RADM) (Chang et al., 1990) and includes chemistry in both the gas and squaws phase. he basic features of RPM (Binkowski and Shanker, 1995) are briefly summarized, and for the version of RPM reported here the extension to the inclusion of organic carbon and nitrate added to the sulfate, ammonium and water system originally considered is described below.

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