CACGP Symposium on Tropospheric Chemistry contains papers presented at the Symposium on "e;"e;Tropospheric Chemistry with Emphasis on Sulphur and Nitrogen Cycles and the Chemistry of Clouds and Precipitation"e;"e;. Organized into 24 chapters, this book begins with a discussion on the trace gas and aerosol measurements at a remote site in the northeast U.S.; satellite measurements of aerosol mass and transport; and measurements of reactive nitrogen compounds in the free troposphere. Subsequent chapters explore kinetic study of reactions of some organic sulfur compounds with OH radicals; analysis of precipitation collected on a sequential basis; and measurements of the chemical composition of stratiform clouds. The book also discusses sulfur isotope ratio studies in a geothermal region; the oxidation of isoprene in the troposphere; a 2-D model of global aerosol transport; and theoretical studies of intermediates in sulfur oxidation cycle.