The Koppen's climate classification system is the most widely used system for classifying the world's climates which was created by Wladimir Koppen, a German botanist and climatologist. The Koppen system recognises five major climatic types; each type is designated by a capital letter, A, B, C, D and E. Here 'A' stands for Tropical Moist climate, 'B' for Dry climate, 'C' for Moist Mid-Latitude climate with Mild Winters, 'D' for Moist Mid-Latitude climates with Cold Winters and 'E' stands for the Polar climate. Cwg is monsoon with dry winter that is predominantly experienced in Ganga plain, eastern Rajasthan, northern Madhya Pradesh and most of the North-eastern part of our country.