Record Display for the EPA National Library Catalog


Main Title Estimating Natural Emissions for EPA's Regional Oxidant Model.
Author Pierce, T. E. ; Novak., J. H. ;
CORP Author National Oceanic and Atmospheric Administration, Research Triangle Park, NC. Air Resources Lab.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher 1991
Year Published 1991
Report Number EPA/600/D-91/286;
Stock Number PB92-129592
Additional Subjects Natural emissions ; Air pollution sources ; Photochemical reactions ; Mathematical models ; Atmospheric chemistry ; Study estimates ; Three-dimensional calculations ; Nitrogen oxides ; Concentration(Composition) ; Non-methane hydrocarbons ; Vegetation ; Biomass ; Regional Oxidant Model ; Eastern Region(United States)
Library Call Number Additional Info Location Last
NTIS  PB92-129592 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 14p
The paper documents the methodology used to estimate natural sources of nitrogen oxide (NOx) and nonmethane hydrocarbon (NMHC) emissions in the Regional Oxidant Model (ROM). The ROM is a three-dimensional photochemical grid model designed to simulate hourly concentrations of ozone and related chemical species. The current operational version of the model accepts anthropogenic and natural emissions on a grid cell resolution of 1/6 deg latitude by 1/4 deg longitude (approximately 18.5 km by 18.5 km). Sources that are simulated include NO emissions from lightning and soil microbial activity, and NMHC emissions from vegetation. Estimates made for the eastern United States indicate that biogenic NMHC emissions are larger than anthropogenic NMHC emissions. Natural sources of NO, however, are less than one-tenth the size of anthropogenic NOx emissions.