foehn winds

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Foehn WindsFoehn Winds

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ContentsContents

• Introduction.Introduction.

• How is it formed?How is it formed?

• Where is it found?Where is it found?

• Graphs.Graphs.

• Interesting Facts.Interesting Facts.

• End!End!

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Introduction.Introduction.

• The Foehn winds The Foehn winds are dry, hot winds are dry, hot winds that originate in a that originate in a

area of high area of high altitude.altitude.

• They blow down They blow down the leeward side or the leeward side or the northern side the northern side

of a slope.of a slope.

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How it is formed?How it is formed?

• A foehn wind occurs when a deep A foehn wind occurs when a deep layer of prevailing wind is forced over layer of prevailing wind is forced over

a mountain range.a mountain range.

• As the wind descends to lower levels As the wind descends to lower levels on the leeward side of the mountains on the leeward side of the mountains

the air heats as it comes under the air heats as it comes under greater atmospheric pressure creating greater atmospheric pressure creating

strong gusty warm and dry winds.strong gusty warm and dry winds.

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Where is it found?Where is it found?

• It is found mainly in Central Europe It is found mainly in Central Europe around the Alps and in regions around the Alps and in regions higher up.higher up.

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Graph.Graph.

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Interesting Facts.Interesting Facts.• Regionally, these winds are known as Regionally, these winds are known as

“Zonda winds" in Argentina.“Zonda winds" in Argentina.

• “ “Chinook winds" in the Rocky Chinook winds" in the Rocky Mountains.Mountains.

• "Diablo winds" in the San Francisco "Diablo winds" in the San Francisco Bay Area.Bay Area.

• "Santa Ana winds" in Southern "Santa Ana winds" in Southern California.California.

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