You are here:
1985 NAPAP EMISSIONS INVENTORY: DEVELOPMENT OF SPATIAL ALLOCATION FACTORS
Citation:
Modica, L. AND D. Dulleba. 1985 NAPAP EMISSIONS INVENTORY: DEVELOPMENT OF SPATIAL ALLOCATION FACTORS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/7-89/010b.
Description:
The report documents the development and application of spatial allocation factors for the 1985 National Acid Precipitation Assessment program(NAPAP) Emissions Inventory (Version 2). The 1985 annual inventory and related modelers' inventory represent the most comprehensive and highest quality emissions data avail- able. The inventory spans the 48 contiguous United States and lO Canadian provinces. Emissions data are included for 9175 plants and area source categories from 3073 counties in the U.S. and the l0 Canadian provinces. One application of the NAPAP inventory is to provide an emissions data input file for regional atmospheric models used to simulate the transport and transformation of acid deposition precursors and the patterns and magnitudes of deposition products. Annual emissions data were resolved into a consistent spatial grid pattern, into hourly values for l2 representative day types, and into 59 pollutant species for modeling applications. The report discusses the development of the spatial allocation factors that were used to distribute county and rovince level area source emissions estimates to a grid pattern defined by 1/6-degree latitude and 1/4-degree longitude covering the contiguous U.S. and Canada to 60 degrees north latitude. The report also documents the computer software used to formulate the spatial allocation factors.