Regional scale Lagrangian nonlinear chemistry model for acid deposition

Conference · Sun Jan 01 04:00:00 EST 1984

OSTI ID:6804309

Kleinman, L I

A receptor oriented Lagrangian photochemical model was applied to the problem of determining the change in wet deposition of SO/sub 4//sup -2/ and NO/sub 3//sup -/ caused by a decrease in emissions of SO/sub 2/, NO/sub x/, or reactive hydrocarbons (HC). Boundary layer concentrations of acidic substances, HNO/sub 3/ and SO/sub 4//sup -2/, acid precursors, SO/sub 2/ and NO/sub x/, and oxidants were calculated for different emission conditions. The response of a precipitating system to the ambient concentration changes so produced was then qualitatively determined based upon several simplifying assumptions regarding the fate of S- and N- pollutants in clouds. Calculations were performed for a fair weather period in July 1978 and results compared with air quality monitoring data collected at the SURE (Sulfate Regional Experiment) station in Duncan Falls, Ohio. For one of the days studied, the fractional change in wet deposition of SO/sub 4//sup -2/ and NO/sub 3//sup -/ was determined for factor of two decreases in SO/sub 2/, NO/sub x/, and HC emissions. 10 references, 2 figures, 3 tables.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6804309
• Report Number(s): BNL-35123; CONF-841059-11; ON: DE84016442
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
ATMOSPHERIC CHEMISTRY
CHALCOGENIDES
CHEMISTRY
CONTROL
ENVIRONMENTAL IMPACTS
MATHEMATICAL MODELS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
PRECIPITATION SCAVENGING
SEPARATION PROCESSES
SULFATES
SULFUR COMPOUNDS
WASHOUT