INDIA'S CHANGING MONSOON PATTERNS
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'Decoding india's changing monsoon patterns: A tehsil level assessment '' report released by CEEW
- The report by council on energy, environment and water (CEEW) analyses meteorological data from 1982 to 2022, recorded by india meteorological department.
Key findings:-
- climate change projections indicate a 10-14% surge in southwest monsoon rainfall in india by the end of the 21st century.
- trends over past decade (2012-22):
- southwest monsoon
- more than half tehsil experienced a rise in frequency of heavy rainfall, partcularly in high GDP states like maharashtra, tamil nadu, gujarat, and karnataka.
- indo-gangetic plains and northeast reported an increase in dry days.
- Northeast monsoon:-there were no significant changes in the frequency and intensity of very heavy rainfall events, dry days,or moderate rainfall days.
Recommendations:-to enhance resilience against shifting monsoon patterns prioritize localised decision - making through.
- mapping monsoon performance at more localised level.
- currently, IMD provides informations at country,zonal,states,meteorological sub-division,and district scales
- Development of district - level climate action plans incorporating tehsil - level climate risk assessments.
- Invest in automatic weather stations and community - based recordings.
Monsoon in india:-
- southwest monsoon (june to september): arises because of the formations of an intense low - pressure system over the tibetan plateau and contributes around 75% of india's rainfall.
- Northeast monsoon (october to december):-arises due to high-pressure cells that are formed over the siberian and tibetan plateaus and contributes about 11% of india's annual rainfall.
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