Sea-level extremes quadrupled since 1900, new study in Nature reveals
GS3Economy · S&T · Environment · Security· Climate change & international agreements· Prelims·
Why in news
A study in Nature reveals that human-driven sea-level rise has quadrupled the frequency of coastal sea-level extremes since 1900, increasing flood risks.
Background
The study analyzed over a century of tide gauge data and climate model simulations. It found that human-induced warming became the primary driver of increased flood risk globally since the 1960s.
Facts for Prelims
- FactFrequency of coastal sea-level extremes has quadrupled since 1900.
- FactHuman-induced warming became the primary factor for increased flood risk since the 1960s.
- S&TTide gauge data and climate model simulations were used to identify the shift in flood frequency.
For Mains
Q. Discuss how human-induced sea-level rise poses a threat to coastal infrastructure and the socio-economic stability of vulnerable coastal populations in India.
Dimensions to cover in your answer
- Infrastructure vulnerability: High cost of retrofitting coastal cities against increased frequency of 1-in-100-year flood events.
- Socio-economic displacement: Risk of climate-induced migration from low-lying coastal regions and saline intrusion into agricultural lands.
- Policy-planning gap: Need for dynamic coastal zone management that accounts for accelerated sea-level rise rather than historical averages.
Keywords: Anthropogenic warming · Coastal vulnerability · Climate adaptation · Sea-level rise · Flood frequency
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This note is generated automatically from SatyaDheesh's news feed and mapped to the UPSC CSE syllabus. Check facts against the original report or PIB before using them in an answer.