What is a system where winds reverse direction & Cause seasons of wet & dry weather in places like India?

What is a system where winds reverse direction & Cause seasons of wet & dry weather in places like India?

A monsoon is a seasonal change in the direction of the prevailing, or strongest, winds of a region. Monsoons cause wet and dry seasons throughout much of the tropics.

What is a wind that reverse its direction from season to season?

Monsoon, a major wind system that seasonally reverses its direction—such as one that blows for approximately six months from the northeast and six months from the southwest. The most prominent monsoons occur in South Asia, Africa, Australia, and the Pacific coast of Central America.

Which winds are responsible for the rainy season?

Southwest monsoon winds are highly responsible for the rainfall experienced over the greater part of the India. The southwest monsoon is about four months in which an enormous number of thunderstorms rules the India’s weather. In fact, it is earth’s greater productive wet season.

What are seasonally reversing tropical winds called?

Monsoon: A large-scale, seasonally-reversing surface wind circulation in the tropics accompanied by large amplitude seasonal changes in precipitation.

What are the positive and negative effects of monsoons?

Monsoons can have both negative and positive effects. Flooding caused by monsoon rains can destroy property and crops (SF Fig. However, seasonal monsoon rains can also provide freshwater for drinking and crop irrigation.

What are the negative effects of monsoons?

Summer monsoons can bring heavy rains that destroy homes, damage infrastructure, wash away crops and destroy Water, Sanitation and Hygiene (WASH) infrastructure. During winter monsoons, dry weather can lead to drought and crop failures from lack of moisture.

What are the two types of seasonal winds?

Example of seasonal winds

• Planetary Winds: The winds blowing throughout the year from one latitude to another in response to latitudinal differences in air pressure are called “planetary or prevailing winds”.
• Trade Winds:
• The Westerlies:
• Periodic Winds:
• Local Winds:

What is the main cause of wind movement?

Wind is caused by a difference in pressure from one area to another area on the surface of the Earth. Air naturally moves from high to low pressure, and when it does so, it is called wind. Generally, we can say that the cause of the wind is the uneven heating of the Earth’s surface by the Sun.

What would happen if the monsoons are weak in a year?

When the summer monsoon is late or weak, the regions economy suffers. Fewer people can grow their own food, and large agribusinesses do not have produce to sell. Governments must import food. Electricity becomes more expensive, sometimes limiting development to large businesses and wealthy individuals.

How is rainfall carried by the winds?

In a high-pressure area, weather is generally fair and winds typically light. LOW PRESSURE: When air warms, its molecules scatter. The air becomes lighter and rises. As the warm air is forced upward, water vapor condenses into clouds and rain, which can sometimes be heavy along the front.

What is the full form of ITC Z?

The Intertropical Convergence Zone, or ITCZ, is the region that circles the Earth, near the equator, where the trade winds of the Northern and Southern Hemispheres come together.

How do seasonal winds affect climate?

Prevailing winds bring air from one type of climate to another. For example, warm winds that travel over water tend to collect moisture as they travel; the water vapor in the air will condense as it moves into colder climates, which is why temperate coastal areas often receive heavy rainfall.

Why are winter monsoon winds less powerful than summer winds?

These winds start in the air above Mongolia and northwestern China. Winter monsoons are less powerful than summer monsoons in Southeast Asia, in part because the Himalaya Mountains prevent much of the wind and moisture of the monsoons from reaching the coast.

How does rain change from dry season to wet season?

As water vapor in towering thunderstorm clouds condenses into rain, it releases heat into the atmosphere, beginning the process of overturning the atmosphere and reversing the monsoon. These satellite images show the progress from dry season to wet season.

When do the winds change in the Amazon rainforest?

Between January and July the prevailing winds over the equatorial Amazon flip from blowing north to south in January to blowing south to north in July.

Where does the North American Monsoon usually end?

Finally, it reaches its end on the Indian coast of Africa. Monsoon winds exist in other parts of the world, too. The North American monsoon happens once a year, usually in the middle of summer. Warm, moist air from the Gulf of California blows northeast, while warm, moist air from the Gulf of Mexico blows northwest.