• Researchers have found that winter temperatures in the northwestern Himalayas have risen on an average 0.65 degree Celsius over a period of 25 years from 1991 — higher than the global average rise of 0.44 degree Celsius.
• During this period, total winter precipitation has increased with greater rainfall and lesser snowfall.
• Rising temperatures have led to an increase in the frequency of avalanches since 1970, posing a threat to the road that provides access to the newly built Rohtang tunnel.

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