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Which of the following local winds is also called the doctor wind? (A) Harmattan (B) Sirocco (C) Foehn (D) Chinook
In the hot and humid regions of West Africa, the air can often feel heavy and uncomfortable. When the Harmattan blows during the winter months, it brings a dry, parched air mass from the desert. Even though it carries some dust, people call it the "doctor" because it makes the environment feel muchRead more
In the hot and humid regions of West Africa, the air can often feel heavy and uncomfortable. When the Harmattan blows during the winter months, it brings a dry, parched air mass from the desert. Even though it carries some dust, people call it the “doctor” because it makes the environment feel much fresher. High humidity often allows diseases and mosquitoes to thrive, so the arrival of this dry wind is seen as a healing event that improves public health and comfort. It is a great example of a wind that is welcomed by the local people.
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See lessWhich of the following local winds provides relief from the humid weather to the people of the Guinea coast in Africa?
The Guinea coast of Africa is famous for its tropical climate, which means it is almost always very damp and hot. The Harmattan wind changes this by bringing air that has very little water in it. As this dry wind moves in from the north, it soaks up the excess moisture in the air. This "drying out"Read more
The Guinea coast of Africa is famous for its tropical climate, which means it is almost always very damp and hot. The Harmattan wind changes this by bringing air that has very little water in it. As this dry wind moves in from the north, it soaks up the excess moisture in the air. This “drying out” effect is what provides the relief. Students should remember that while the wind is dusty, its ability to lower humidity is why it is so famous in this specific part of Africa for changing the daily weather for the better.
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See lessWhich of the following warm local winds causes considerable damage to fruit orchards in California? (A) Norther (B) Chinook (C) Zonda (D) Santana
Santa Ana winds are a major weather concern in California. These winds happen when high pressure builds up over the Great Basin desert. As the air moves toward the lower pressure of the Pacific Ocean, it is squeezed through narrow canyons, which makes it move faster. Because the air is falling fromRead more
Santa Ana winds are a major weather concern in California. These winds happen when high pressure builds up over the Great Basin desert. As the air moves toward the lower pressure of the Pacific Ocean, it is squeezed through narrow canyons, which makes it move faster. Because the air is falling from high deserts to the low coast, it gets very hot and extremely dry. These “devil winds” can suck all the moisture out of lemon and orange trees and their high speeds can even knock fruit right off the branches, causing millions of dollars in losses.
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See lessWhich of the following local winds flows from the mountainous region of Central Europe towards the Adriatic coast of Yugoslavia?
The Bora is one of the most powerful cold winds in the world. It is common in the winter when the air over the snowy mountains of Central Europe becomes very heavy and cold. This air eventually "falls" down the slopes toward the warmer Adriatic Sea. Because it is moving downhill, it gains a lot of sRead more
The Bora is one of the most powerful cold winds in the world. It is common in the winter when the air over the snowy mountains of Central Europe becomes very heavy and cold. This air eventually “falls” down the slopes toward the warmer Adriatic Sea. Because it is moving downhill, it gains a lot of speed, sometimes reaching over 200 km/h. It is a very dry wind that brings freezing temperatures to the coast. In some coastal towns, the wind is so strong that people have to use handrails along the streets just to stay upright!
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See lessWesterly winds are winds that blow: (A) In different directions depending on the season (B) Between 30°-60° North and South latitudes of the equator (C) Over the polar regions (D) From land to sea at night and from sea to land during the day
The Westerlies are a key part of the Earth's global wind system. They blow from the subtropical high-pressure belts (around 30°) toward the subpolar low-pressure belts (around 60°). Because of the Coriolis effect caused by the Earth's rotation, these winds are tilted so that they always blow from thRead more
The Westerlies are a key part of the Earth’s global wind system. They blow from the subtropical high-pressure belts (around 30°) toward the subpolar low-pressure belts (around 60°). Because of the Coriolis effect caused by the Earth’s rotation, these winds are tilted so that they always blow from the west. This is why airplanes flying from West to East (like from New York to London) usually travel much faster than those flying the opposite way! These winds are the primary reason why weather usually moves from west to east in temperate regions of the world.
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