.The Global Cryosphere Past, Present, and Future This is the first textbook to address all the components of the Earth’s cryosphere – all forms of snow and ice, both terrestrial and marine. It provides a concise but comprehensive summary of cryospheric processes for courses at upper undergraduate and graduate level in environmental science, geography, geology, glaciology, hydrology, water resource engineering, and ocean sciences. It also provides a superb up-to-date summary of cryospheric processes for researchers from a range of sciences. In recent years, studies have shown that the Earth is undergoing potentially rapid changes in all cryospheric components, including Arctic sea ice.