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Ultraviolet absorption spectrum of methylhydroperoxide vapor
Author(s) -
Molina M. J.,
Arguello G.
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/gl006i012p00953
Subject(s) - photodissociation , troposphere , ultraviolet , solar zenith angle , zenith , water vapor , wavelength , absorption (acoustics) , ozone , absorption spectroscopy , materials science , photochemistry , atmospheric sciences , optics , physics , chemistry , meteorology
The ultraviolet absorption cross sections of methylhydroperoxide, CH 3 OOH, have been measured over the wavelength range 210 nm to 350 nm at 294 K. We conclude that solar photolysis is a dominant sink for tropospheric CH 3 OOH. For midlatitudes the photodissociation rate is estimated to be ∼4.3 × 10 −6 s −1 for 0°, 3.7 × 10 −6 s −1 for 30°, and 1.0 × 10 −6 s −1 for 70° zenith angle.