Global And Regional Air Circulation Flashcards

1
Q

At about what latitude is the polar jetstream at?

A

60°

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2
Q

Pacific high

A

Semi permanent high-pressure in the pacific ocean

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3
Q

Ferrell cell

A

Air flow from the Hadley and polar cells move to the mid latitudes

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4
Q

Polar cell

A

Rising air at mid latitude sinks near the north/south poles

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5
Q

Land breeze

A

Air from the land was onto the nearshore ocean

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6
Q

Mountain breeze

A

Cooling air from the mountain moves down slope

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7
Q

Bermuda high

A

Semi permanent high pressured in the Caribbean

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8
Q

Katabatic wind

A

Downslope wind that moves at very fast speeds

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9
Q

Monsoon

A

Wind pattern changes direction seasonally in South Asia

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10
Q

Dust devil

A

Whirlwind caused by strong solar heating and local wind

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11
Q

Santa Ana wind

A

Warm dry air funnels eastward through mountain canyons

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12
Q

Chinook wind

A

Warm dry air parcel that rapidly drops from the mountains

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13
Q

Aleutian low

A

Semi permanent low pressure in the gulf of Alaska

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14
Q

Hadley cell

A

Excessive heating in the tropics gives rising air moving toward the poles

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15
Q

Valleybreeze

A

Warming air from a valley moves upslope

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16
Q

Windshear

A

Turbulence formed by rapid change in wind direction and speed

17
Q

Seabreeze

A

Air from the sea moves onto the shore

18
Q

Subtropical jetstream

A

River an upper-level air between the ITZC and Ferrel cell

19
Q

Polar jetstream

A

River of upper level air between the polar and Ferrel cell

20
Q

When our land breeze is likely to occur?

A

Night

21
Q

When are sea breezes likely to occur?

A

Day

22
Q

Add about what latitude is the subtropical jetstream at?

A

30°

23
Q

Columbia Gorge wind

A

Cold air flows east into the gorge

24
Q

Siberian high

A

Permanent high-pressure over eastern Russia

25
Q

What is the Columbia Gorge wind a sign of?

A

Cold weather

26
Q

Icelandic low

A

Semi permanent low-pressure near Greenland

27
Q

Eddy

A

A small volume of air that behaves differently from the larger flow in which it exists

28
Q

Thermal circulations

A

Circulation is brought on by changes in air temperature

29
Q

What causes a seabreeze?

A

Air over water remains cooler than air over land

30
Q

How does the land breeze form?

A

The land cools more quickly than the water and the air above the land becomes cooler than the air over the water

31
Q

Haboob

A

Sand storm

32
Q

Intertropical convergence zone

A

The boundaries zone separating the northeast trade winds of the northern hemisphere from the southeast trade winds of the Southern Hemisphere

33
Q

Trade winds

A

Winds that occupy most of the tropics and blow from the subtropical highs to the equatorial low

34
Q

Westerlies

A

Dominant westerly winds that blow in the middle latitudes on the polarward side of the subtropical high-pressure area’s

35
Q

Polar front

A

A semi permanent, semicontinuous front that separates tropical air masses from polar air masses

36
Q

Sub polar low

A

A belt of low-pressure located between 50° and 70° latitude

37
Q

About what latitude is the ITCZ located?

A

38
Q

What part of the atmosphere a jet streams found?

A

Tropopause