This textbook is written for meteorology majors who require an initial introduction to the physical properties of the atmosphere and to the essential principles and real-world applications of atmospheric thermodynamics. These topics are supplemented by a sampling of techniques and technologies related to atmospheric measurements and observations. A unique tutorial, included as an appendix, teaches students how to attack physical problems symbolically, deferring numerical calculations until the final step in the solution. The author's objectives include not only covering the traditional core subject matter of an undergraduate thermodynamics course but also facilitating students transition from a purely abstract understanding of calculus and physics concepts to the confident application of both to the science of meteorology.