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Main Title National acid precipitation assessment program emission inventory allocation factors /
Author Sellars, F. M. ; Fitzgerald, T. E. ; Lennon, J. M. ; Maiocco, L. J. ; Monzione, N. M.
Other Authors
Author Title of a Work
Sellars, F. M.
CORP Author GCA Corp., Bedford, MA. GCA Technology Div.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher GPO,
Year Published 1985
Report Number EPA/600/7-85/035; GCA-TR-84-171-G; EPA-68-02-3698
Stock Number PB86-104247
Subjects Volatile organic compounds ; Acid-forming emissions--United States--Computer simulation ; Nitrogen dioxide ; Lagrange equations ; Acid rain--United States ; Air quality management--United States--Data processing ; Sulphur dioxide
Additional Subjects Air pollution control ; Assessments ; Nitrogen oxides ; Photochemistry ; Sources ; Combustion products ; Allocation models ; Information systems ; Emission factors ; Acid rain ; National Acid Precipitation Assessment Program ; Emission inventories ; Computer applications ; Regional model data handling system ; Volatile organic compounds ; Eulerian acid deposition model
Library Call Number Additional Info Location Last
NTIS  PB86-104247 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation x, 170 pages : illustrations
The report describes the processes, assumptions, and data sources used in developing the National Acid Precipitation Assessment Program (NAPAP) temporal, spatial, and species allocation factors. The processing of the NAPAP emissions inventory through the Regional Model Data Handling System (RMDHS) and the specifications for a new NAPAP data handling system are also detailed. The Eulerian acid deposition model being developed for use in the NAPAP required more resolved emissions data than are available in the NAPAP emissions inventory. The NAPAP inventory, which separately covers annual emissions from point and county-wide area sources, had to be apportioned to reflect hourly emissions with area source emissions assigned to grid squares. Hourly emissions of volatile organic compounds (VOCs) then had to be allocated into photochemical reactivity classes and nitrogen oxides (NOx) emissions had to be separated into NO and NO2.
"EPA.600/7-85/035." "September 1985." "EPA Contract No. 68-02-3698." Microfiche.