factors affecting climate

FACTORS AFFECTING CLIMATE

K.SUGUNA.RPGT GEO

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FACTORS1. LATITUDE2. ALTITUDE3. DISTANCE FROM THE SEA4. PRESSUR AND WIND SYSTEM5. RELIEF6. OCEAN CURRENTS

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LATITUDE

• DUE TO THE CURVATURE OF HE EARTH THE AMOUNT OF SOLAR ENERGY RECEIVED VARIES ACCORDING TO LATITUDE

• TEMPERATURE DECREASES FROM EQUATOR TO POLAR REGION• TROPICAL REGION-HOT• POLAR REGION –COLD• TEMPERATE REGION –MODERATE

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LATITUDETROPIC OF CANCER PASSES THROUGH THE CENTRE OF INDIA SOUTH INDIA EXPERIENCES TROPICAL CLIMATENORTH INDIA EXPERIENCES TEMPERATE CLIMATEGREEN LAND –POLAR CLIMATE

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ALTITUDE

• AS WE GO FROM SURFACE OF THE EARTH TO HIGHER ELEVATIONS ATMOSPHERIC TEMPERATURE DECREASES.

• NORMAL LAPSE RATE -1O C /165m HEIGHT • ATMOSPHERE GET HEATED FROM BELOW

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ALTITUDE• HILLY AREAS ARE COOLER THAN PLAIN AREAS• OOTY IS COOLER THAN COIM BATORE• BANGALORE IS COOLER THAN CHENNAI

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DISTANCE FROM THE SEA

• SEA EXERTS A MODERATING INFLUENCE ON CLIMATE• IF THE PLACE IS LOCATED AWAY FROM THE SEA THEN THE

MODERATING INFLUENCE OF THE SEA DECREASES

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DISTANCE FROM THE SEA• PLACES IN THE INTERIOR LOCATION

EXPERIENCES EXTREME CLIMATE • COASTAL AREAS EXPERIENCES EQUABLE

CLIMATE

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RELIEF• HEIGHT AND ASPECT OF THE RELIEF INFLUENCES THE

CLIMATE OF A REGION• MOUNTAINS ACT AS A CLIMATIC BARRIER• IT PREVENTS THE COLD/HOT WIND AND PROTECT THE

REGION• HIMALAYAS ACTS AS A CLIMATIC BARRIER

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RELIEF• IF THE MOSTURE LADEN WINDS BLOW PERPENDICULAR TO A

MOUNTAIN-• IT CAUSES OROGRAPHIC RAINFALL• WINDWARD SIDE RECEIVES MORE RAINFALL WHERE AS LEEWARD

SIDE REMAINS AS A RAINSHADOW REGION• WESTERN GHATS CAUSES OROGRAPHIC RAINFALL

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PRESSURE AND WIND SYSTEM

• AIR PRESSURE AFFECTS THE WIND SYSTEM• WIND AFFECTS THE RAINFALL OF A REGION• HUMID AIR GIVES RAINFALL• WIND FROM CONTINENT –DRY • WIND FROM OCEANS- WET

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OCEAN CURRENTS-

• MASS MOVEMENTS OF OCEAN WATER FROM ONE PART OF THE OCEAN TO ANOTHER PART.

• TWO TYPES:• WARM CURRENT• COLD CURRENT

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OCEAN CURRENTS-WARM CURRENT INCREASES THE TEMPERATURECOLD CURRENT –DECREASES THE TEMPERATURE

GULF STREAM INCREASES THE TEMPERATURE OF THE WESTERN COAST OF EUROPE

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factors affecting climate

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