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Describe the role of the ITCZ in transporting warm moisture-laden air from over the Indian Ocean to northern Australia. What is this weather system known as?

Question

Describe the role of the ITCZ in transporting warm moisture-laden air from over the Indian Ocean to northern Australia. What is this weather system known as?

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Solution

The Intertropical Convergence Zone (ITCZ) plays a crucial role in transporting warm, moisture-laden air from over the Indian Ocean to northern Australia. Here's how it works:

  1. The ITCZ is a belt of low pressure that circles the Earth near the equator. It's where the trade winds of the Northern and Southern Hemispheres come together.

  2. Warm, moist air from the Indian Ocean moves towards this low-pressure area. This is because air always flows from areas of high pressure (like over the ocean) to areas of low pressure (like the ITCZ).

  3. As this air moves, it carries with it a lot of moisture. When it reaches the ITCZ, the warm air rises. As it rises, it cools and the moisture condenses to form clouds and precipitation.

  4. The ITCZ moves with the seasons, so when it's summer in the Southern Hemisphere, the ITCZ is at its southernmost point. This is when it's over northern Australia, bringing with it the warm, moist air from the Indian Ocean.

This weather system is known as the monsoon. In particular, this is the Australian monsoon, which typically occurs from December to March. It's characterized by heavy rain and thunderstorms in northern Australia.

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