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U.S. Department of Energy
Office of Scientific and Technical Information

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