Ambient air hydroxyl radical concentrations: Measurements and model predictions
Technical Report
·
OSTI ID:5032727
The review critically examines the limited number of recent near-surface measurements of hydroxyl radicals in urban and rural areas. Predictions of average tropospheric, hemispheric, and/or zonal concentrations of hydroxyl radicals derived from methylchloroform and carbon monoxide concentrations and models are discussed. The limitations of one- and two-dimensional model predictions of zonal and seasonal hydroxyl concentrations received detailed consideration. Of special concern on a regional scale are cloud cover effects on the penetration of ultraviolet radiation below 320 micrometers which is critical to the subsequent reactions forming hydroxyl radicals.
- Research Organization:
- Environmental Protection Agency, Research Triangle Park, NC (USA). Atmospheric Sciences Research Lab.
- OSTI ID:
- 5032727
- Report Number(s):
- PB-90-117086/XAB; EPA--600/J-89/098
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION
AIR POLLUTION MONITORING
ATMOSPHERIC CHEMISTRY
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
CLOUDS
EARTH ATMOSPHERE
ELECTROMAGNETIC RADIATION
FLUORESCENCE
GAS ANALYSIS
HYDROXYL RADICALS
KINETICS
LUMINESCENCE
MATHEMATICAL MODELS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
POLLUTION
RADIATIONS
RADICALS
REACTION KINETICS
RURAL AREAS
SAMPLING
TROPOSPHERE
ULTRAVIOLET RADIATION
URBAN AREAS
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION
AIR POLLUTION MONITORING
ATMOSPHERIC CHEMISTRY
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
CLOUDS
EARTH ATMOSPHERE
ELECTROMAGNETIC RADIATION
FLUORESCENCE
GAS ANALYSIS
HYDROXYL RADICALS
KINETICS
LUMINESCENCE
MATHEMATICAL MODELS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
POLLUTION
RADIATIONS
RADICALS
REACTION KINETICS
RURAL AREAS
SAMPLING
TROPOSPHERE
ULTRAVIOLET RADIATION
URBAN AREAS