write any five factor that affect the monsoon
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The differential heating and cooling of land and water-The difference in temperature over land and water creates a low-pressure over the land mass in India. This low pressure attracts winds from high pressure area.The shift of the position of Inter Tropical Convergence Zone-The equatorial Inter Tropical Convergence Zone, which is a low pressure belt of highly unstable weather, moves northward towards India. This shift is also a cause of the onset of monsoon in India.The presence of high pressure area east of Madagascar-The intense high pressure area that is formed of Madagascar, at approximately 20 degree south over the Indian Ocean causes the wind to flow towards the low pressure over the Indian land mass.The heating oh Tibetan Plateau-The Tibetan Plateau which gets intensely heated during summer, results its strong vertical air currents and the formation of low pressure over the plateau at about 9 Km above sea level.
The movement of the Westerly Jet Stream-The movement of the Westerly Jet Stream which lies north of the Himalayas creates western cyclonic disturbances, which influence the monsoon rain.
The factors which affect the intensity of monsoon are–
El Nino and La Nina Effects-These affects the latitudinal walker cell in the Pacific Ocean and rainfall pattern in the Asian region. During El Nino Year weak push to Monsoon winds towards India causes less rainfall and draught where as During La Nina years, the push is stronger and causes heavy rain and floods.Strengths of low pressure over Tibet and high pressure over Southern Indian Ocean- The strengths of low pressure over Tibetan plateau and high pressure over Southern Indian Ocean has always positive effect on Indian monsoon and have high rainfall. Opposite to it has weak monsoon and hence less rainfall.Somali Jet (Findlater Jet) and Somali Current (Findlater Current) – These effect the intensity of high pressure cell in the Southern Indian Ocean and flow of moisture laden winds to the subcontinent.Indian Ocean Dipole (IOD) –It is defined by the difference in sea surface temperature between two areas (or poles, hence a dipole) – a western pole in the Arabian Sea (western Indian Ocean) and an eastern pole in the eastern Indian Ocean south of Indonesia. The greater than average sea-surface temperatures in Arabian Sea responsible for greater precipitation in the western Indian Ocean region, and vice versa.
The movement of the Westerly Jet Stream-The movement of the Westerly Jet Stream which lies north of the Himalayas creates western cyclonic disturbances, which influence the monsoon rain.
The factors which affect the intensity of monsoon are–
El Nino and La Nina Effects-These affects the latitudinal walker cell in the Pacific Ocean and rainfall pattern in the Asian region. During El Nino Year weak push to Monsoon winds towards India causes less rainfall and draught where as During La Nina years, the push is stronger and causes heavy rain and floods.Strengths of low pressure over Tibet and high pressure over Southern Indian Ocean- The strengths of low pressure over Tibetan plateau and high pressure over Southern Indian Ocean has always positive effect on Indian monsoon and have high rainfall. Opposite to it has weak monsoon and hence less rainfall.Somali Jet (Findlater Jet) and Somali Current (Findlater Current) – These effect the intensity of high pressure cell in the Southern Indian Ocean and flow of moisture laden winds to the subcontinent.Indian Ocean Dipole (IOD) –It is defined by the difference in sea surface temperature between two areas (or poles, hence a dipole) – a western pole in the Arabian Sea (western Indian Ocean) and an eastern pole in the eastern Indian Ocean south of Indonesia. The greater than average sea-surface temperatures in Arabian Sea responsible for greater precipitation in the western Indian Ocean region, and vice versa.
AshishRanjan11:
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The factors which affect the intensity of monsoon are–
El Nino and La Nina Effects-These affects the latitudinal walker cell in the Pacific Ocean and rainfall pattern in the Asian region. During El Nino Year weak push to Monsoon winds towards India causes less rainfall and draught where as During La Nina years, the push is stronger and causes heavy rain and floods.Strengths of low pressure over Tibet and high pressure over Southern Indian Ocean- The strengths of low pressure over Tibetan plateau and high pressure over Southern Indian Ocean has always positive effect on Indian monsoon and have high rainfall. Opposite to it has weak monsoon and hence less rainfall.Somali Jet (Findlater Jet) and Somali Current (Findlater Current) – These effect the intensity of high pressure cell in the Southern Indian Ocean and flow of moisture laden winds to the subcontinent.Indian Ocean Dipole (IOD) –It is defined by the difference in sea surface temperature between two areas (or poles, hence a dipole) – a western pole in the Arabian Sea (western Indian Ocean) and an eastern pole in the eastern Indian Ocean south of Indonesia. The greater than average sea-surface temperatures in Arabian Sea responsible for greater precipitation in the western Indian Ocean region, and vice versa.
El Nino and La Nina Effects-These affects the latitudinal walker cell in the Pacific Ocean and rainfall pattern in the Asian region. During El Nino Year weak push to Monsoon winds towards India causes less rainfall and draught where as During La Nina years, the push is stronger and causes heavy rain and floods.Strengths of low pressure over Tibet and high pressure over Southern Indian Ocean- The strengths of low pressure over Tibetan plateau and high pressure over Southern Indian Ocean has always positive effect on Indian monsoon and have high rainfall. Opposite to it has weak monsoon and hence less rainfall.Somali Jet (Findlater Jet) and Somali Current (Findlater Current) – These effect the intensity of high pressure cell in the Southern Indian Ocean and flow of moisture laden winds to the subcontinent.Indian Ocean Dipole (IOD) –It is defined by the difference in sea surface temperature between two areas (or poles, hence a dipole) – a western pole in the Arabian Sea (western Indian Ocean) and an eastern pole in the eastern Indian Ocean south of Indonesia. The greater than average sea-surface temperatures in Arabian Sea responsible for greater precipitation in the western Indian Ocean region, and vice versa.
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