Whereas climate is defined as the long-term prevalent weather conditions of area, determined by latitude, position relative to oceans or continents, altitude etc., Climatology is the study of Climates. Since the number of combinations of different climatic controls is very large, every location on the earth's surface has a distinctive climate. As such climatic classification is a device by which the multiplicity of atmospheric conditions upon the earth is meaningfully organised. The present work, in two volumes and encyclopaedic in nature, gives a vivid account of climatology on our planet earth. A dependable source of information, this will prove useful to students, teachers, researchers, scientists, besides the activists in the field concerned.