TNPSC Current Affairs May 2017
Normal monsoon: No El nino threat this year.
Indian Meteorological Department has said that there will be “normal Monsoon” this year and bring 100 % rain instead of 96 % predicted earlier because threat to the monsoon from an El Nino may have receded.
About El Nino and its effect in Indian Monsoon:
- El Nino is an warm ocean current which appears around once every 3-5 years around region in the Pacific Ocean along Peru and other neighbouring Latin American countries during December.
- It is quite warmer than other ocean current which cause rise in water temperature around the region.
- Due to high temperature, low pressure has formed in the area. Wind always blows towards low pressure area.
- Monsoon winds responsible for the rains in Indian subcontinent, always move towards the low pressure area created in Indian Subcontinent and gives heavy Rainfall.
- But during El nino effect the rain bearing monsoon wind will split and fill the low pressure area in both Indian subcontinent and pacific area, which caused the shortage of rainfall.
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