Record Display for the EPA National Library Catalog
RECORD NUMBER: 1 OF 11| Main Title | Ambient Air Hydroxyl Radical Concentrations: Measurements and Model Predictions. | |||||||||||
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| Author | Altshuller, A. P. ; | |||||||||||
| CORP Author | Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. | |||||||||||
| Publisher | cMay 89 | |||||||||||
| Year Published | 1989 | |||||||||||
| Report Number | EPA/600/J-89/098; | |||||||||||
| Stock Number | PB90-117086 | |||||||||||
| Additional Subjects | Mathematical models ; Gas analysis ; Sampling ; Concentration(Composition) ; Urban areas ; Rural areas ; Clouds(Meteorology) ; Trends ; Troposphere ; Photochemical reactions ; Carbon monoxide ; Ultraviolet radiation ; Reprints ; Hydroxyl radicals ; Atmospheric chemistry ; Laser induced fluorescence ; Chloroform/methyl ; Chemical reaction mechanisms | |||||||||||
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| Collation | 7p | |||||||||||
| Abstract | 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. (Copyright (c) 1989, Air and Waste Management Association.) |