Cryosphere is a specific area of study under the umbrella of earth science. It is concerned with those sections of earth where water is available in solid form. This book focuses on some of the diverse geographic regions that fall under cryosphere like permafrosts, ice cover in sea and oceans, river and lake ice, etc. It strives to provide a fair idea about this field and to provide information on the current technologies and instruments used for measurements and observations. The core areas along with researches of this field presented herein will provide in-depth knowledge to the readers.