November 24, 2016 13:30
This winter will see frequent sudden cold spells amid the mounting ravages of climate change, the Korea Meteorological Administration said on Wednesday.
The ice in the Barents and Kara Seas has shrunk to record lows in October and November, which indirectly affects the development of the Siberian anticyclone that brings the winter chill to the Korean Peninsula.
Also in October, record expanses of Eurasia were covered with snow, and the lower the temperature near the ground, the stronger the Siberian anticyclone.
When the sea ice dwindles, so does the polar vortex, a large area of low pressure and cold air surrounding both of the Earth's poles, boosting chances of cold air from the North Pole making its way south.
Also a weak La Niña will likely continue this winter, and as ocean temperatures turn unusually cold in the Equatorial Pacific, winter temperatures here tend to fall below average.
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