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LATEST NEWS UPDATES | 2015 to be India’s hottest year ever, says IMD -Neha Madaan

2015 to be India’s hottest year ever, says IMD -Neha Madaan

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published Published on Dec 4, 2015   modified Modified on Dec 4, 2015
-The Times of India

PUNE: This year is not only in line to be the hottest on record globally but also in India. The country has lived through its hottest September, October and November this year, reveals India Meteorological Department's data going back to 1901.

The countrywide mean temperature in November this year was 1.25 degrees C above normal, the highest-ever for the month since record keeping began. The mean minimum and maximum temperatures in the country this October were also above normal in varying degrees, which too were the highest rise for the month.

"The maximum and mean temperatures in India in September this year were the highest in the last 115 years, 1.25 and 1 degree C, respectively, above normal," Arvind Kumar Srivastava, director of IMD's National Climate Centre, told TOI.

"In October again, the maximum, minimum and mean temperatures in the country were the highest — at 1.35, 1.09, and 1.22 degrees C, respectively, above normal. For November, the mean temperature in India was higher than normal by 1.25 degrees C, another record for that month," Srivastava said.

Last month, the World Meteorological Organisation had announced that 2015 was on course to be the hottest year on record globally. These calculations are based on mean temperatures from different places around the world. Obviously, all regions of the earth have not been uniformly warm this year. Some may have been cooler than normal.

IMD's data shows India has followed the global trend, Srivastava said.

Indian Institute of Tropical Meteorology, Pune (IITM) scientist Roxy Mathew Koll said long climate trends show that global temperatures have been rising continuously since 1997. "The year 1997 had a full blown El Nino event like 2015. A strong El Nino sources out a lot of heat from the ocean, which leads to a rise in temperatures. Almost 90% of the extra heat from greenhouse gases has been passed off to the oceans over the years, with less than 10% passed on to the atmosphere, land and ice combined," he said.

Koll said the El Nino in 1997 was very strong and the one in 2015 has almost reached the same magnitude. "One interesting bit about El Nino this year is that its life-cycle is longer than the one experienced in 1997," he added.

D Sivananda Pai, head of IMD's Long Range Forecasting Division, said models suggest that sea surface temperatures in the east-central tropical Pacific Ocean, where El Nino occurs, are likely to exceed 2 degrees Celsius above average, potentially placing this El Nino event among the four strongest since 1950 (1972-73, 1982-83 and 1997-98). "Since the Pacific is a big region, warming there has led to a rise in the global temperature," he said.


The Times of India, 4 December, 2015, http://timesofindia.indiatimes.com/home/environment/global-warming/2015-to-be-Indias-hottest-year-ever-says-IMD/articleshow/50034819.cms


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