NO_2 -> NO+O(~3P) photolysis frequencies determined from spectroradiometric measurements of solar actinic UV radiation: comparison with chemical actinometer measurements

摘要

The UV photodissociation of atmospheric trace gases like O_3,NO_2,HCHO,H_2O_2,etc.are key-processes in atmospheric chemistry.THey lead to primary production of free radicals like OH and HO_2,and to a large extent determine the partitioning of NO and NO_2 thus contributing to and ocntrolling the rate of local chemical ozone porduction in the troposphere.Reliable photolysis frequency data therefore are of critical importance for the correct interpretation of atmospheric field experiments.