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Main Title

Regional-Urban Scale Modeling of Fine Particulates Using the U.S. EPA Models-3 Community Multiscale Air Quality Modeling System.

Author

Ching, J. K. S. ; Binkowski, F. S. ;

CORP Author

Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab.

Publisher

1997

Year Published

1997

Report Number

EPA/600/A-97/052;

Stock Number

PB97-192561

Additional Subjects

Particulates ; Urban areas ; Three-dimensional models ; Aerosols ; Particles ; Polycyclic aromatic hydrocarbons ; Ozone ; Acid rain ; Photochemical reactions ; Air pollution dispersion ; Environmental transport ; Temporal distribution ; Spatial distribution ; Computer models ; Community Multi-Scale Air Quality Model ; Models-3 modeling system ; Semivolatile organic compounds ; NAAQS(National Ambient Air Quality Standards)

Internet Access

Description	Access URL
	https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=P100P6SC.PDF

Holdings

Library	Call Number	Additional Info	Location	Last Modified	Checkout Status
NTIS	PB97-192561	Some EPA libraries have a fiche copy filed under the call number shown.		07/26/2022

Collation

12p

Abstract

The authors describe the U.S. Environmental Protection Agency's new modeling framework, Models-3, and its first version for air quality called the Community Multiscale Air Quality (CMAQ) model. Models-3/CMAQ is a new generation, state-of-science, comprehensive air quality modeling framework. With a 'one atmosphere' paradigm, it is designed to be capable of addressing holistically and inclusively, the major air quality issues such as photochemical smog, particulate matter, airborne toxics, and Air Quality Related Values (AQRVs) including acidic, nutrient and toxic deposition, as well as visibility. For particulate matter (PM), number and size distributed sulfate, nitrate, organic and aerosol-bound water are predicted on three dimensional grid cells for domains encompassing regional and urban scales. The fundamental features of the aerosol formulations include a bimodal size distribution of particles in the sub-micron range, and aerosols that are internally well mixed. Size dependent dry deposition parameterization, aqueous phase aerosol dynamics, and nucleations are included among the various major atmospheric processes modeled. Considerations for extensions and applications of Models-3/CMAQ are discussed.

Supplementary Notes