Transcript warm, dry air

monsoons
seasonal wind that dominates the
climate of South Asia
wet monsoon
-------------------------------------------------------- Tropic of Cancer
warm, dry air
LOW PRESSURE AREA
cool, moist air
HIGH PRESSURE AREA
• In May and June, the suns rays hit
the Tropic of Cancer.
• Air over the land is warm, causing
it to rise – LOW PRESSURE
AREA.
• The air over the water is cool –
HIGH PRESSURE AREA.
• High pressure areas always replace
low pressure areas.
• Cool, moist air from the sea flows
across the land, bringing rain.
dry monsoon
cool, dry air
HIGH PRESSURE
AREA
warm air
-------------------------------------------------------- Tropic of Capricorn
LOW PRESSURE
AREA
• In October, the suns rays hit the
Tropic of Capricorn.
• The air over the water is warm –
LOW PRESSURE AREA.
• Cool air sinks from the mountains
– HIGH PRESSURE AREA.
• Cool, dry air from the land flows
across the subcontinent toward the
sea; no rain.
importance: key to farmers
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plant seeds in dry land
plants take root before the rains come
rains too late – plants die
too much rain – plants wash away