Estimating natural emissions for EPA's regional oxidant model. Interim report, Jun 91-Nov 91

Technical Report · Tue Jan 01 04:00:00 EST 1991

OSTI ID:5702294

Pierce, T E; Novak, J H

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.

• Research Organization: National Oceanic and Atmospheric Administration, Research Triangle Park, NC (United States). Air Resources Lab.
• OSTI ID: 5702294
• Report Number(s): PB-92-129592/XAB
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ATMOSPHERIC CHEMISTRY
BIOMASS
CHALCOGENIDES
CHEMISTRY
COMPUTERIZED SIMULATION
ECOLOGICAL CONCENTRATION
ENERGY SOURCES
HOURLY VARIATIONS
HYDROCARBONS
NATIONAL ORGANIZATIONS
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL OXIDANTS
POLLUTION SOURCES
REGIONAL ANALYSIS
RENEWABLE ENERGY SOURCES
SIMULATION
THREE-DIMENSIONAL CALCULATIONS
US EPA
US ORGANIZATIONS
VARIATIONS