New Tropospheric OH Measurements

Abstract

New field measurements of atmospheric OH radicals by laser long-path absorption spectroscopy are reported: In the Black Forest, diurnal profiles of OH radical concentrations ranging up to 8.7 × 106 cm−3 have been observed during June 1984. Simultaneous measurements of other trace gases, photolysis frequencies, and meteorologic parameters were also made to allow comparison of observed OH levels with model calculations.