Global Wind Patterns

air circulation

reasons for this in the lower atmosphere:
- uneven heating of the earths surface by sun
- rotation of earth in its axis
- properties of air, water, and land

ocean currents

- prevailing winds
- earths rotation
- redistribution of heat from the sun
- surface currents and deep currents

rises

- warm air _____

more

warm air holds ____ moisture than cold

expands and cools

rising air does this

cool

this air cant hold as much h20 vapor (condenses -> rain)

sink

after cooling and expanding, air does this

Coriolis effect

direction of objects traveling through the atm. due to spin of earth

low

air @ 30 moves back to ____ pressure of equator

east to west

wind between 0-30 moves from _____ because earth is spinning w->e

west to east

wind between 30-60 moves _____ because earth spins faster at 30 than 60

out

air moves ___ from 30 to 0 and 60 due to high pressure at 30 and low pressure at 0 and 60

low

air rising at the equator = ____ pressure

high

air sinking down at 30 = ___ pressure

clockwise

the ocean current is ___ in the northern hemisphere

counterclockwise

the ocean current is ____ in the southern hemisphere

eastern trade

0 - 30 winds blow east to west

westerlies

30 - 60 winds blows west to east