Long‐term trends of surface air temperature in india

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Abstract
Salient features of the long‐term variation of surface air temperature for India as a whole and for different regions of the country have been presented. Temperature data at 73 fairly widespread stations, for the period 1901‐1982. have been used in the study. Seasonal and annual temperature anomaly series have been obtained for the different regions. Such series have also been obtained for latitude‐ and longitude‐wise classifications. The long‐term variation in the temperature has been evaluated by linear trend.The results indicate a slight but definite warming trend in the mean annual Indian temperatures. This warming is found to be mainly contributed by the post‐monsoon and winter seasons. West coast, interior peninsula, north central and north‐east regions of the country have shown pronounced warming in the mean annual temperatures. The post‐1940 cooling reported for the Northern Hemisphere is not conspicuous in the mean annual Indian temperature anomalies.