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CLIMATE OF INDIA

CLIMATE OF INDIA. Subject: Geography For Class: IX. CONTENTS OF THE LESSON. Part-I. Climatic Diversity of India. Part-II. Factors Affecting Climate of India. Rhythm of Seasons. Part-III. Part-IV. Distribution of Rainfall. Change of Climate. Part-V.

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CLIMATE OF INDIA

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  1. CLIMATE OF INDIA Subject: Geography For Class: IX

  2. CONTENTS OF THE LESSON Part-I Climatic Diversity of India Part-II Factors Affecting Climate of India Rhythm of Seasons Part-III Part-IV Distribution of Rainfall Change of Climate Part-V Please click on the box to navigate to the pages

  3. Why does weather change spatially & temporally? Let us examine…

  4. Drass -450C in December night Tawang 190C in June 550C temperature in June Thar desert Diurnal range of temperature 300C Jaisalmer receives 9cm rainfall Cherrapunji & Mawsynram have 1080cm rain Tiruvanantapuram & Chennai 200C in December night Kerala Diurnal range of temperature 80C MONSOON REGIME IS THE UNITY OF INDIA

  5. MORE DIVERSITIES………………….. • Churu in Rajasthan records a temperature of 50°C or more on a June day. • Snow fall over the Himalayas. • Most parts of India receives rainfall during June to September. • Tura of Meghalaya receives rainfall in a single day is equal to the total rainfall of Ten years in Jaisalmer of Rajastan. • It is 19°C in Tawang (Arunachal Pradesh) on the same day. • Only rainfall over rest of India. • Tamilnadu coast remains dry during these months. • Very low rainfall in North west Himalayas and western Rajastan which is equal to 10cm per year. MONSOON REGIME IS THE UNITY OF INDIA

  6. FACTORS AFFECTING INDIAN CLIMATE FAQ RELATED TO LOCATION & RELIEF RELATED TO AIR PRESSURE & WIND • Latitude Surface pressure & wind • Altitude Upper air circulation • Relief Western cyclones • Distance from Sea • The Himalayan Mt. • Distribution of Land & water

  7. EQUATORIAL REGION LATITUDE FAQ TROPIC OF CANCER High range of Temp High Temp Low range

  8. THE HIMALAYAS- CLIMATIC BARRIER Cold Wave Cold Wave Cold Wave Cold Wave Monsoon Wind Monsoon Wind Monsoon Wind Monsoon Wind

  9. DISTRIBUTION OF LAND & WATER FAQ HIGH PRESSURE IN WINTER LOW PRESSURE IN SUMMER ARABIAN SEA BAY OF BENGAL INDIAN OCEAN

  10. SIMLA DELHI KOLKOTA MUMBAI CHENNAI DISTANCE FROM SEA Coastal areas have equable climate where as Interior parts have extreme climate.

  11. AGRA 160C in Jan DARJILING 40C in January ALTITUDE FAQ Temperature decreased from low to high altitude HIGH ALTITUDE Decrease in Temperature LOW ALTITUDE

  12. RELIEF FAQ Receives high rainfall Western Ghat Mt. Monsoon Wind Receives low rainfall Monsoon Wind Monsoon Wind

  13. SUB TROPICAL LOW PRESSURE SUB TROPICAL HIGH PRESSURE INTER TROPICAL CONVERGENCE ZONE SUB TROPICAL HIGH PRESSURE SUB TROPICAL LOW PRESSURE SURFACE WIND POLAR HIGH NORTH-EAST TRADE WIND SOUTH-EAST TRADE WIND POLAR HIGH

  14. JET STREAM IN WINTER TIBET

  15. JET STREAM IN SUMMER

  16. WESTERN DISTURBANCE Mediterranean sea

  17. EL-NINO EFFECTS FAQ 1990 Delay in Monsoon Equatorial Warm Current Peru El-Nino Homboldt Cold Current

  18. SOUTHERN OSCILLATION Darwin Tahiti

  19. RHYTHM OF SEASONS HOT WEATHER RETREATING MONSOON COLD WEATHER SOUTH WEST MONSOON Let us discuss each of them individually

  20. Tropical Cyclone COLD WEATHER SEASON • It extends from December to February. • Vertical sun rays shift towards southern hemisphere. • North India experiences intense cold where as this season is not well defined in south India. • Light wind blow makes this season pleasant in south India. • Occasional tropical cyclone visit eastern coast in this season. Rhythm of Seasons

  21. TEMPERATURE- JANUARY 100C` 150C 200C 200C 200C 250C 200C 250C Rhythm of Seasons

  22. PRESSURE- JANUARY 1018 HIGH PRESSURE 1019 1018 1018 1017 1016 1015 1014 Rhythm of Seasons

  23. WIND DIRECTION- WINTER Northern Plain Ganga Delta Bay of Bengal Rhythm of Seasons

  24. WINTER RAINFALL RAINFALL DUE TO WESTERN DISTURBANCES RAINFALL DUE TO NORTH EAST WIND Rhythm of Seasons

  25. May 480C April 380C March 300C HOT WEATHER SEASON • It extends from March to May. • Vertical sun rays shift towards Northern hemisphere. • Temperature rises gradually from south to north. • Highest Temperature experiences in Karnataka in March, Madhya Pradesh in April and Rajastan in May. Rhythm of Seasons

  26. TEMPERATURE- JULY 250C 200C 300C 250C 200C 300C 300C Rhythm of Seasons

  27. PRESSURE- JULY 997 998 999 1000 1001 1003 1002 1004 1005 1006 1007 Rhythm of Seasons

  28. BARDOLI CHHEERHA LOO KALBAISAKHI MANGO SHOWER BLOSSOM SHOWER STORMS IN HOT WEATHER SEASON FAQ Rhythm of Seasons

  29. SOUTH WEST MONSOON SEASON • It extends from June to September. • Intense heating in north west India creates low pressure region. • Low pressure attract the wind from the surrounding region. • After having rains for a few days sometime monsoon fails to occur for one or more weeks is known as break in the monsoon. HIGH TEMPERATURE LOW PRESSURE Rhythm of Seasons

  30. MONSOON WIND Arabian sea Branch Bay of Bengal Branch INTER TROPICAL CONVERGENCE ZONE EQUATOR SE Trade SE Trade SE Trade SE Trade Rhythm of Seasons

  31. ONSET OF SW MONSOON 15th June 15th July 1st July 10th June 5th June 1st June Rhythm of Seasons

  32. RETREATING MONSOON SEASON • It extends from October to November • Vertical sun rays start shifting towards Northern hemisphere. • Low pressure region shift from northern parts of India towards south. • Owing to the conditions of high temperature and humidity, the weather becomes rather oppressive. This is commonly known as the ‘October heat’ LOW PRESSURE Rhythm of Seasons

  33. WITHDRAWAL OF MONSOON 15th Sept. 7th Sept. 30th Sept. 7th October 15th October Rhythm of Seasons

  34. DISTRIBUTION OF RAINFALL > 200cm 100-200cm 50-100 cm < 50cm

  35. VARIABILITY OF RAINFALL • The variability of rainfall is computed with the help of the following formula: C.V.= Standard Deviation/ Mean * 100 • Variability of less than 25% exist in Western coasts, Western Ghats, northeastern peninsula, eastern plain of the Ganga, northern India, Uttaranchal, SW J & K & HP. • Variability of more then 50% found in Western Rajastan, J & K and interior parts of Deccan. • Region with high rainfall has less variability.

  36. IMPACT OF GLOBAL WORMING FLOOD FOREST FIRE SPREAD OF TROPICAL DISEASES SINKING COAST SEA LEVEL RISE MELTING OF ICE INCREASE INGREEN HOUSE GASES RISE IN TEMPERATURE TSUNAMI & EARTHQUAKE EXCESSIVE SUN STROKE FOOD SCARCITY LOSS OF BIODIVERSITY CLIMATE CHANGE

  37. SOME INTERESTING FACTS • Temperature increased by 0.60C in 20th century. • Eleven out of twelve hottest years are within 1995 to 2006. • Annual rate of increase of CO2 is 1.9ppm after 1995. • Concentration of methane increased from 700ppb in 1750 to 1745ppb at present and Nitrous Oxide from 270ppb to 314ppb where as CFC increased from zero to 533ppb. • Rising of temperature to 30C will lead to melting of all ice on earth surface and sea level rise upto 15 feet. • Existence of large cities like Venis, Bankok, Sanghai, Kolkota and Dhaka will be in danger. FAQ

  38. KOLKOTA MUMBAI CHENNAI CLIMATE CHANGE & INDIA • India has long coast line and rise of sea level will submerge large area. • A population of 7.1 million living in coastal areas will be affected. • Production of crops like wheat, rice etc will decrease. • The natural disasters like cyclone, floods and drought will increase in frequency as well as intensity.

  39. WHAT CAN BE DONE??? • Switch off the light, fan, TV and other energy using gadgets when they are not in use. • Do not use those equipments that pollute or consume more energy. • create public awareness. • use renewable energy resources like solar, wind, biomass etc. • International conferences like Earth Summit, 1992, Kyoto protocol, Copenhegen summit, 2009 are some steps to bring consensus for crusade against Climate Change.

  40. TEST YOUR KNOWLEDGE • Name the factors affecting climate of India . • What is meant by El-nino? • Why the south western part of peninsular India receives high rainfall? • Name the important green house gases. • How altitude affects climate? • How distance from sea affect climate? • What is meant by mango shower? • What is meant by Inter Tropical Convergence Zone? Answer Answer Answer Answer Answer Answer Answer Answer

  41. EVALUATION RUBRIC Evaluate the classroom presentation of other groups and assign marks.

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