Summer sea ice loss in the Kara Sea region of the Arctic may be triggering extreme monsoon rainfall events in central India in the month of September, a new paper has suggested.
The research, led by the National Centre for Polar and Ocean Research under the ministry of earth sciences, has found that the frequency of extreme rainfall events (daily rainfall >150 mm) in central India in September displayed a consistently increasing trend with declining summer sea ice extent during the Early Twentieth Century Warming (ETCW, 1920–1940) period and recent warming since the 1980s.
The trend was found to be stronger in the recent warming period after the 1980s, the paper, ‘A possible relation between Arctic sea ice and late season Indian Summer Monsoon Rainfall extremes’, said.
Since the beginning of the satellite records in 1979, the Arctic Sea Ice Extent (SIE) has been declining at a rate of about 4.4% per decade in annual mean, the paper published in the journal Nature on June 22 said.
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