Reasons of excessive cold in north india during winter season
Answers
Answer:
Explanation:
Cold wave conditions form due to lack of western disturbances which are are extratropical storms that mostly appear during the winter months. They are called extratropical storms because they originate outside the tropics. They originate somewhere near the mediterranean sea and the Atlantic Ocean and are laden with moisture. Western disturbances create precipitation and bring down day temperatures, but night temperatures remain steady.
They change the wind patterns in the northern parts of India. Presence of an active western disturbance cold winds from the Himalayas continue to blow in to the northern parts of India thereby allowing the prevailing cold conditions to continue and intensify.
Once the western disturbances pass, day temperatures increase but night temperatures dip significantly. Parts of the plains of north-west, central and west India encounter cold wave, fog and ground frost conditions etc.
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