Understanding the characteristics of idian mansoon

Mansoon depend sun energy, how much water vapour, movement of  cloud. The Indian mansoon is actually depended upon following important atmospheric phenomenon Inter tropical convergence zone(ITCZ), jet stream, Indian Ocean dipole, madden Julian oscillation, Equitorial Indian Ocean dipole (EQUINOO) the phenomena of al-nino and la-nina. ITCZ is a low pressure belt which in circle the earth generally near equator and where the trade winds of northern and southern Hemisphere come to get her. Summer season Indian and tibetan plateau, low pressure area,mascarene high Corriolis force. Due to pressure belt of ITCZ Indian subcontinent attract the high pressure wind from mascarene high. This phenomena is known as propagation of South West monsoon. As South West mansoon proceeds ITCZ keep on shifting towards the tropic of cancer this leads to engulfing of mansoon in hole india. When ITCZ during the last phase of mansoon start shifting toward equator our tropic of Capricorn it leads to North East mansoon our reteating mansoon in a nexal shifting of ITCZ has a huge impact of India mansoon pattern. Indian Southwest and north East mansoon- high pressure wind From( mascarene high), Corriolis force, temperature difference land mass and ocean. Jet stream- river of wind West to East, jet stream are narrow bend of strong winds that generally blow from West to East across the globe. Earth rottate corriolis force. Due to complete change in behaviour of jet stream it is going to have an impact on indias rainfall pattern our mansoon pattern. Indian Ocean dipole means difference the temperature of the Indian Ocean region. Difference in the temperature of Western Indian ocean and eastern Indian ocean is known as Indian Ocean dipole. Negative Indian ocean dipole (IOD) eastern Indian ocean more warm and more rainfall others positive Indian ocean- western Indian ocean more warm and more rainfall. La-nina means adequate amount of rainfall, al-nino means heat waves. The impact of change in mansoon patern- due to continuous heating of the Arabian sea area the Indian subcontinent is witnessing the unprecedented Rainfall. Which is harmful for coastal community, fisheries industry as well as cropping pattern in Western coastal area. Arabian sea warming cause- prasence of aerosols ( black carban) anthropogenic activities emission, green house gases trap. Carban sink - mother earth carban absorption capacity reduced, rice yield - spikeless sterlity, triple dip la-nina- whenever la- nina brings surplus rainfall in the northern hemisphere. Provide this surplus rainfall is for three successive mansoon session. Madden Julian oscillation play important role movement eastward cluster of clouds. Due to this movement their would be enhance rainfall and suppress rainfall in the indo Pacific region.                                 Written by - Aman Vikal

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