Himalayan and the Tibetan Highlands: Importance in South-West Monsoon Development.

As far as the development of monsoon concerned, the South-West monsoon's develops under jet-stream conditions and the Himalaya and the Tibetan highlands play a vital role. In hot season of April-May, the landmass of Indian sub-continent gets heated by the sun rays, which decreases pressure and increases temperature of the land in comparison to the water bodies of the Indian Ocean and Arab Sagar.

About 5000 mitre above the Tibetan Plateau and Himalayan ranges in North in India, wind heats up and moves up. Sometimes hot air colls down and some regions see the pre-monsoon rain, while in some regions around the equator; the jet-stream came down and hit the wind of the Indian Ocean Northward. Resultantly the Indian Ocean wind moves towards low air pressure in the north-West side. Thus an air circle is created between the Tibetan plateau and the Indian Ocean. In India this ocean wind is called south-west monsoon. In short the Himalaya and the Tibetan Plateau are highlands.

So they help in getting much heat and so decreasing pressure. Then, they prevent the humid air blowing from water bodies, thus, they give rainfall in India. The highlands help in getting rainfalls for a longer period also.

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