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Monsoon

Monsoon. Southwest Monsoon. Occurrence?. When? Southwestern summer monsoons occur from June to September. Occurrence?. Why & How? The Thar Desert and adjoining areas of the northern and central Indian subcontinent heats up considerably during the hot summers

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Monsoon

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  1. Monsoon Southwest Monsoon

  2. Occurrence? • When? • Southwestern summer monsoons occur from June to September.

  3. Occurrence? • Why & How? • The Thar Desert and adjoining areas of the northern and central Indian subcontinent heats up considerably during the hot summers • causes a low pressure area over the northern and central Indian subcontinent. • To fill this void, the moisture-laden winds from the Indian Ocean rush in to the subcontinent.

  4. Occurrence? • These winds, rich in moisture, are drawn towards the Himalayas, creating winds blowing storm clouds towards the subcontinent. • The Himalayas act like a high wall, blocking the winds from passing into Central Asia, thus forcing them to rise. • With the gain in altitude of the clouds, the temperature drops and precipitation occurs. Some areas of the subcontinent receive up to 10,000 mm (390 in) of rain annually.

  5. Formation

  6. Direction of wind • The wind direction during the Southwest monsoon season in the Northern Hemisphere of the Indian Ocean during the months of May to October.

  7. Extent of Monsoon • The influence of the Southwest Monsoon is felt as far north as in China's Xinjiang. It is estimated that about 70% of all precipitation in the central part of the Tian Shan Mountains falls during the three summer months, when the region is under the monsoon influence; about 70% of that is directly of "cyclonic" (i.e., monsoon-driven) origin (as opposed to "local convection")

  8. Thank You! Done by: Zhang Yiran Jonathan Jiang Wang Yiwei He Hao Wei

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