Factors affecting climate

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I Spell SSt inservice course KVGN

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Factors affecting climate

  1. 1. FACTORS AFFECTING CLIMATE K.SUGUNA.R PGT GEO
  2. 2. FACTORS 1. 2. 3. 4. 5. 6. LATITUDE ALTITUDE DISTANCE FROM THE SEA PRESSUR AND WIND SYSTEM RELIEF OCEAN CURRENTS
  3. 3. 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
  4. 4. LATITUDE TROPIC OF CANCER PASSES THROUGH THE CENTRE OF INDIA SOUTH INDIA EXPERIENCES TROPICAL CLIMATE NORTH INDIA EXPERIENCES TEMPERATE CLIMATE GREEN LAND –POLAR CLIMATE
  5. 5. 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
  6. 6. ALTITUDE • HILLY AREAS ARE COOLER THAN PLAIN AREAS • OOTY IS COOLER THAN COIM BATORE • BANGALORE IS COOLER THAN CHENNAI
  7. 7. 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
  8. 8. DISTANCE FROM THE SEA • PLACES IN THE INTERIOR LOCATION EXPERIENCES EXTREME CLIMATE • COASTAL AREAS EXPERIENCES EQUABLE CLIMATE
  9. 9. 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
  10. 10. RELIEF • • • • IF THE MOSTURE LADEN WINDS BLOW PERPENDICULAR TO A MOUNTAINIT CAUSES OROGRAPHIC RAINFALL WINDWARD SIDE RECEIVES MORE RAINFALL WHERE AS LEEWARD SIDE REMAINS AS A RAINSHADOW REGION WESTERN GHATS CAUSES OROGRAPHIC RAINFALL
  11. 11. 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
  12. 12. OCEAN CURRENTS•MASS MOVEMENTS OF OCEAN WATER FROM ONE PART OF THE OCEAN TO ANOTHER PART. •TWO TYPES: •WARM CURRENT •COLD CURRENT
  13. 13. OCEAN CURRENTSWARM CURRENT INCREASES THE TEMPERATURE COLD CURRENT –DECREASES THE TEMPERATURE GULF STREAM INCREASES THE TEMPERATURE OF THE WESTERN COAST OF EUROPE

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