Wind Patterns Flashcards
What is another name for the Intertropical Convergence Zone?
Doldrums
Between what latitudes do the doldrums occur?
5 degrees N to 5 degrees S
How are the winds in the Intertropical Convergence Zone characterized?
Calm
Between what latitudes do the Trade winds occur?
0 degrees to 30 degrees, N and S
Between what latitudes do the Westerlies occur?
30 degrees to 60 degrees, N and S
What wind current was named because it aided ships in long ocean journeys?
Trade winds
Is it warm or cold air that rises around the equator?
warm
What wind current blows irregularly east and north?
Polar Easterlies
What wind current is found between 60 to 90 degrees N.?
Polar Easterlies
Hadley Cells are?
Convection currents that cycle warm air from the equator to 30 degrees N. or S.
Where do Ferrel cells exist?
30 to 60 degrees N. and S. latitude
Where do Polar cells exist?
60 to 90 degrees N. and S. latitude
A column of cool, dense air moves _____ the surface and creates _____ pressure.
toward, high
The descending air at 30 degrees N. and S. latitude creates high pressure zones called what?
subtropical highs
Descending air at the poles that create high pressure regions are called?
polar highs
A column of warm, low density air goes ____ from the surface and creates ____ pressure.
away, low
The band of low pressure at the equator is called:
equatorial low
The bands of low pressure at 60 degrees N and S is called:
subpolar low
The Polar front is?
The prevailing westerlies meeting the polar easterlies and polar westerlies at 60 degrees N. or S.
What is the Jet Stream?
A narrow, fast moving, easterly flowing air mass, which exists above the mid-latitudes just below the top of the troposphere
Tropical cyclones are huge rotating masses of ____ pressure.
low
Hurricanes are measured on what scale?
Saffir-Simpson Scale
What wind current is found between 60 to 90 degrees S.?
Polar Westerlies
