Global Physical Climatology, Third Edition delineates the science of climate and climate change that spans the atmosphere, oceans, and land surfaces. The book begins with a detailed introduction of the climate system and then introduces its physics, including the principles and processes that determine the structure and climate of the atmosphere, oceans, and land surfaces. More advanced sections apply the basic knowledge introduced earlier in the text in understanding natural variability of the climate in both the present and past, the sensitivity of climate to external forces, explanations for the ice ages, and the science of human-induced climate change. The physical principles and computer models necessary for understanding past climate and predicting future climate are also discussed. This book is recommended for upper division undergraduates and graduates in meteorology, atmospheric science, oceanography, and other environmental fields. It is also suitable for students with a background of at least one year of college physics and calculus as well as researchers in academia, government (military, NOAA, NWS), and policymakers.