WINDS. DIFFERENCES IN AIR PRESSURE. UNEQUAL HEATING OF AIR. LOCAL WINDS. LAND BREEZE SEA BREEZE MONSOON. MONSOONS . SEASONAL WINDS. CARRIES WARM MOIST AIR. GLOBAL WINDS UNEQUAL HEATING EQUALS GLOBAL PATTERN OF AIR CIRCULATION. CORIOLIS EFFECT.
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UNEQUAL HEATING OF AIR
CARRIES WARM MOIST AIR
GLOBAL PATTERN OF AIR
SHIFT IN WIND DIRECTION DUE TO EARTH’S ROTATION
As air moves from high to low pressure in the northern hemisphere, it is deflected to the right by the Coriolis force. In the southern hemisphere, air moving from high to low pressure is deflected to the left by the Coriolis force.
CALM SURFACE WINDS AT EQUATOR (0 degrees latitude)
AIR MOVING BACK TO THE EQUATOR FORMING A BELT OF WARM, STEADY WINDS
30 degrees North and South of Equator
Warm air cools and sink; clear skies; winds are calm
40-60 degrees Latitude (West to East)
COLDBUT WEAK WINDS EAST TO WEST
“rivers of air"
ABOVE 12 KMS
180-350 Km/Hr (speed)