The atmosphere behaves like a giant thermal engine in which disorganized energy is transformed into organized kinetic energy by the uneven absorption of solar radiation. The last one drives the circulation of the atmosphere by temperature differences between the polar and equatorial regions. Thermodynamics of the Atmosphere: Basic Physics and Applications to Earth's Science book provides the physical basis for understanding the climate system: ideal gases, thermodynamics laws, the effects of gravity, the water in the atmosphere, cloud drops, mixtures, and thermal radiation.