This course provides a comprehensive understanding of atmospheric chemistry, focusing on the chemical composition and sources of atmospheric gases. Topics include photochemistry, reaction mechanisms, and the role of greenhouse gases in global warming. Students will explore ozone chemistry, aerosols, acid-base reactions, and acid rain. The course also covers tropospheric chemistry, offering insights into the chemical processes that shape our atmosphere. By the end of the course, learners will gain a solid foundation in atmospheric chemistry and its impact on environmental processes.