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SO WHERE WOULD ONE FIND A MONSOON
CLIMATE?
· COASTAL REGIONS
· BETWEEN 5 AND 2O° NORTH AND SOUTH OF THE EQUATOR
· BETWEEN THE ITCZ AND A ZONE OF SUBTROPICAL HIGH PRESSURE…read more

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CHARACTERISTICS
· HOT TEMPERATURES (18 ­ 30°C ALL YEAR ROUND)
· THESE VARY BY ABOUT 10°C FROM WINTER TO SUMMER
· HIGH AMOUNTS OF RAINFALL (3000MM/YEAR) ­ THE MAJORITY FALLS IN THE
WET SEASON AND LITTLE FALLS IN THE DRY SEASON
· WINDS CHANGE DIRECTION WITH THE SEASONS ­ IN THE WET SEASONS THEY
BLOW TOWARDS THE LAND AND IN THE SUMMER THEY BLOW AWAY FROM THE
LAND…read more

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FACTORS CONTROLLING THE SOUTH EAST
ASIA MONSOON
1. PRESSURE DIFFERENCES CAUSED BY EXTREME HEATING AND COOLING OF
LARGE LAND MASSES IN RELATION TO THE SMALLER HEAT CHANGES OVER
NEARBY SEA AREAS ­ THESE DIFFERENCES DETERMINE THE STRENGTH
AND DIRECTION OF ASSOCIATED WINDS
2. THE NORTHWARDS MOVEMENT OF THE ITCZ DURING THE NORTHERN
HEMISPHERE SUMMER
3. THE MOUNTAIN BARRIER OF THE HIMALAYAS (MANY PEAKS OVER 8,000M),
WHICH IS HIGH ENOUGH TO INFLUENCE THE GENERAL ATMOSPHERIC
CONDITIONS IN THE REGION…read more

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SOMEWHERE WITH A MONSOON CLIMATE ­
CHITTAGONG, BANGLADESH
· TEMPERATURES VARY FROM 19.9°C
­ 28.4°C
· RAINFALL IS 2796MM A YEAR
· IN JANUARY THERE IS 6MM
· IN JULY THERE IS 818MM…read more

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THE SUMMER (SOUTH-WEST) MONSOON
· THE ITCZ MOVES NORTH BECAUSE OF A SHIFT OF THE OVERHEAD SUN TOWARDS THE TROPIC OF
CANCER
· THE INTENSE HEATING OF NORTH INDIA, PAKISTAN AND CENTRAL ASIA PRODUCES A LARGE AREA
OF LOW PRESSURE (WITH HIGH PRESSURE OVER THE OCEAN) ­ THIS FORCES WINDS FROM THE
OCEAN TO THE LAND AND SINCE THE OCEAN IS WARMER THAN THE LAND (COOLS MORE SLOWLY),
THE WINDS ARE WARM AND BRING HIGH TEMPERATURES
· THE HIGHEST TEMPERATURES ARE JUST BEFORE THE RAIN ARRIVES (THE CLOUDS BLOCK
INCOMING SOLAR RADIATION)
· AS THE WARM AIR RISES, IT DRAWS IN WARM, MOIST EQUATORIAL MARITIME AND TROPICAL
MARITIME AIR FROM THE INDIAN OCEAN AND THIS IS DIVERTED NORTH-EAST BY THE CORIOLIS
FORCE
· APPROACHING THE WESTERN GHATS AND THE SOUTH HIMALAYAS, THERE IS SUBSTANTIAL
RAINFALL (13,000MM IN CHERRAPUNJI) ­ THIS IS FROM THE OROGRAPHIC AND CONVECTIONAL
UPLIFT OF MOIST AIR
· IN SRI LANKA IT ARRIVES BY 10TH MAY, BUT IT DOESN'T REACH PAKISTAN UNTIL 5TH JULY…read more

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