Global And Regional Air Circulation Flashcards
At about what latitude is the polar jetstream at?
60°
Pacific high
Semi permanent high-pressure in the pacific ocean
Ferrell cell
Air flow from the Hadley and polar cells move to the mid latitudes
Polar cell
Rising air at mid latitude sinks near the north/south poles
Land breeze
Air from the land was onto the nearshore ocean
Mountain breeze
Cooling air from the mountain moves down slope
Bermuda high
Semi permanent high pressured in the Caribbean
Katabatic wind
Downslope wind that moves at very fast speeds
Monsoon
Wind pattern changes direction seasonally in South Asia
Dust devil
Whirlwind caused by strong solar heating and local wind
Santa Ana wind
Warm dry air funnels eastward through mountain canyons
Chinook wind
Warm dry air parcel that rapidly drops from the mountains
Aleutian low
Semi permanent low pressure in the gulf of Alaska
Hadley cell
Excessive heating in the tropics gives rising air moving toward the poles
Valleybreeze
Warming air from a valley moves upslope
Windshear
Turbulence formed by rapid change in wind direction and speed
Seabreeze
Air from the sea moves onto the shore
Subtropical jetstream
River an upper-level air between the ITZC and Ferrel cell
Polar jetstream
River of upper level air between the polar and Ferrel cell
When our land breeze is likely to occur?
Night
When are sea breezes likely to occur?
Day
Add about what latitude is the subtropical jetstream at?
30°
Columbia Gorge wind
Cold air flows east into the gorge
Siberian high
Permanent high-pressure over eastern Russia
What is the Columbia Gorge wind a sign of?
Cold weather
Icelandic low
Semi permanent low-pressure near Greenland
Eddy
A small volume of air that behaves differently from the larger flow in which it exists
Thermal circulations
Circulation is brought on by changes in air temperature
What causes a seabreeze?
Air over water remains cooler than air over land
How does the land breeze form?
The land cools more quickly than the water and the air above the land becomes cooler than the air over the water
Haboob
Sand storm
Intertropical convergence zone
The boundaries zone separating the northeast trade winds of the northern hemisphere from the southeast trade winds of the Southern Hemisphere
Trade winds
Winds that occupy most of the tropics and blow from the subtropical highs to the equatorial low
Westerlies
Dominant westerly winds that blow in the middle latitudes on the polarward side of the subtropical high-pressure area’s
Polar front
A semi permanent, semicontinuous front that separates tropical air masses from polar air masses
Sub polar low
A belt of low-pressure located between 50° and 70° latitude
About what latitude is the ITCZ located?
0°
What part of the atmosphere a jet streams found?
Tropopause