Atmospheric science explores Earth's atmosphere and its physical processes, encompassing meteorology, aeronomy, and climatology. Meteorology focuses on weather forecasting and includes atmospheric chemistry and physics. Climatology examines atmospheric changes and variations, while aeronomy investigates the upper atmosphere, particularly dissociation and ionization. This textbook offers a comprehensive overview of these sub-fields and the latest technological advancements, providing an in-depth understanding of current atmospheric science.