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Hydroxyl and peroxy radicals in polluted tropospheric air
Author(s) -
Hov Øystein,
Isaksen Ivar S. A.
Publication year - 1979
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl006i003p00219
Subject(s) - troposphere , ozone , radical , sulfate , atmospheric sciences , environmental science , environmental chemistry , air pollution , tropospheric ozone , diurnal temperature variation , pollutant , gas phase , atmospheric chemistry , range (aeronautics) , meteorology , chemistry , materials science , physics , organic chemistry , composite material
Model calculations show that hydroxyl is a rather conservative specie with respect to abundance and diurnal variation. Calculated maximum concentrations range from about 6×10 −5 to 4×10 −4 ppb for winter and summer, clear and clouded sky, temperatures ranging from 0 to 25°C and pollutant emissions ranging from average values for Western industrialized countries to urban areas. Peroxy radicals show a much stronger variability in concentration partly due to their strong dependence on NO. Gas phase sulfate conversion rates up to 3% hr −1 are calculated. Sulfate and ozone are efficiently generated in moderately polluted air.