TREWARTHA'S CLASSIFICATION OF INDIAN CLIMATE
G.T. Trewartha modified the climatic classification of Koppen in 1954. His classification of climate is empirical, based on the temperature and precipitation data. He also used English alphabets as the symbols to show the different types of climate. His scheme, applied to India, divides the country into four major climatic regions which are further sub divided into seven meso-climatic divisions (Fig. 4.24(a)).
