Pune :. Delhi is one of the top 10 cities, including all major metropolitan areas, where the average annual temperature has increased significantly higher than other cities during the last four decades
A recent study by the Indian Institute of Tropical Meteorology (IITM) and the World Meteorological Organization in Geneva, Switzerland, listed Delhi along with Kolkata, Jaipur, Ahmedabad, Mumbai, Nagpur, Bangalore, Hyderabad, Chennai and Pune as cities with significant temperature rise 1971-2013. The largest increase in average temperature was in Jaipur (0.38 ° C), followed by Bangalore (0.23 ° C) and Nagpur (0.21 ° C). Delhi is one of the four cities on the list that showed a decrease in the average annual temperature 1901-1970, before the trend was reversed.
This indicates the growing urbanization has played a role in rising temperatures, IITM R & D Kothawale, who led the research said. The other cities are showing a similar trend Ahmedabad, Jaipur and Hyderabad.
The study showed that even hill stations like Srinagar, Shimla, Darjeeling and Kodaikanal had been an increase in the temperature genius in the past 40 years, until 2013. The maximum and minimum temperature in these hill stations are he had risen by 0.4 ° C and 0.22 ° C per decade.
Researchers used data from the average temperature, maximum and minimum seasonal and annual 36 meteorological stations since 1901.
Kothawale also said the average temperature of all coastal stations showed a significant upward trend.
Nine major cities -Kolkata, Jaipur, Ahmedabad, Surat, Mumbai, Pune, Nagpur, Bangalore and Chennai -showed significant increasing trends in the minimum temperature after 1971, while the maximum temperature during this period showed an increasing trend -Jaipur significant in six major cities, Mumbai, Nagpur, Bangalore, Hyderabad and Chennai.
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