COURSE SUMMARY CLASS IX + XI GEOGRAPHY NCERT ndia-I PRESENTED BY ARPITA PRAKASH INDIA : PHYSICAL ENVIRONMENT
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THE INDIAN MONSOON Some 'mpasctant au S pists ) Onet at the Monsoon i) Roi olones) and the and diitscibutim teaguumey monsaon sauna ii) Bsank ww ths Monsoon
SOUTHERN OSCILLATION (SO): and Indian 0cea souithu fanitic Oczam (H) dhene attru sunssa iwsyease, the asacijie w compasion to astarn indiam Ocranm
El Nino: This is a name given to the periodic development of a warm ocean current along the coast of Peru as a temporary replacement of the cold Peruvian current. 'El Nino' is a Spanish word meaning 'the child', and refers to the baby Christ, as this current starts flowing during Christmas. The presence of the El Nino leads to an increase in sea-surface temperatures and weakening of the trade winds in the region.
EL-Nino and the Indian Monsoon s once every three to seven years, bringing EI-Nino is a complex weather system that appear drought, floods and other weather extremes to different parts of the world. The system involves oceanic and atmospheric phenomena with the appearance of warm currents off the coast of Peru in the Eastern Pacific and affects weather in many places including India. EI-Nino is merely an extension of the warm equatorial current which gets replaced temporarily by cold Peruvian current or Humbolt current (locate these currents in your atlas). This current increases the temperature of water on the Peruvian coast by 10 C. This results in: (i) the distortion of equatorial atmospheric circulation; (ii) irregularities in the evaporation of sea water (iii) reduction in the amount of planktons which further reduces the number of fish in the sea. The word EI-Nino means Child Christ' because this current appears around chiristmas in December. December is a summer month in Peru (Southern Hemisphere) El-Nino is used in India for forecasting long range monsoon rainfall. In 1990-91, there was a wild El-Nino event and the onset of southwest monsoon was delayed over most parts of the country ranging from five to twelve days.
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n B easu to disestim amd And intensity at antall
Buoak inn, the Monsoon oueu thu klist Coast : daus en hun winds blaus pasualid to the caast
THE COLD WEATHER SEASON (WINTER) e un regia Liw N.plans) aR Cald Sonne Jamall (on amd Nadu coast) | blu High Pressue Nascthann Plai u on and to Sea. So ek mat Plan") | HP zone to in OUTH)
HE HO WEATHER SEASON SUMMER) dmaement ah sun Pemimitase India tem 1. Mauch - jane'. Sunnrnos mo nths , suong , hot, and duy aust pacsssuusra : dusina Ma . " PRE- MO N SOON SHOWERS u DUST STORMS" hauing iw Kosnala and Kasunataka and boe z e) mangas cool
68 E 72 76 809 HK 96 36 N INDIA MONSOONS ADVANCING N Srinagar PAKISTAN 32 32" Chandigarh CHINA (TIBET) 28 BHUTAN 15 July Jaipur Lucknow Patna A DNGLADA 24 ropic of Concor 1 Juno O Ahmadabad 15 June Bhopal Kolkatal Nagpur MYANMAR Bhubanesbwar 20 June Mumbl ARABIA N SEA BAY OF BENGAL Hyderabad 16 5 June Bangalore 12 Chennal 12 LAKSHADWEEP INDIA) ANDAMAN &NICOBAR ISLANDS INDIA) 8 N 0 200 400 INDIAN IT 400 600 km Thiruvananthapuram 76 RI LANKA I N D I A N OCE A N 8 N 72 E 84 88 92 E
68 E 72 76 80 84 88 92 96 E 36 N INDIA RETREATING MONSOONS 36 v 15 Sept. Srinagar 320 PAKISTAN 32 Chandigarh .> Chandigarh CHINA CTIBET) 28 . DELHI BHUTAN Jaipur 1 Sepl Lucknow Patna A RANGLADESIpa 15 Sept A BANGLADESH 24 - "J VJ \ TropicofCancer Ahmadabad Bhopal Kolkata - 20 Nagpur . MYANMAR Bhubaneshwar 20 Mumbai ARABIAN SEA BAY OF BENGAL Hyde 16 Bangalofe 12 Chennai 120 LAKSHADWEEP (INDIA) ANDAMAN & NICOBAR ISLANDS (INDIA) 0 200 400 600 km SRI LANKA) OCEAN INDIAN 8 N 72 E 760 76 84 88 92 E O
DISTRIBUTION OF RAINFALL atiat vaiations Areas low Hawngall
76 80 84 CE) Polau ueo Kappm's Schume TyR2 (>fe) Kumid winter uith Cotd 28 Hat Bwhw Cwg) 24 23% CAw) 20 Bshw) Tropical auvam steppe cimelz TA Ty pe (As) Amw Monsoon . Dry Senson with. She Kms. 250 500 Kms Projection: Lambert Conical Orthomorphic 84 92" 96" 100
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