Atmospheric Physics is the science of applying physics to the study of the atmosphere. Atmospheric physicists attempt to model Earth's atmosphere and the atmospheres of the other planets using fluid flow equations, chemical models and descriptions of the energy transfer processes in the atmosphere (as well as how these tie in to other systems such as the oceans).

It has close links to meteorology and climatology and also covers the design and construction of instruments for studying the atmosphere and the interpretation of the data they provide, including remote sensing instruments.