TNPSC Thervupettagam

Assessment Report 6

November 30 , 2025 13 hrs 0 min 10 0
  • The post-IPCC AR6 (Assessment Report 6) update is a peer-reviewed scientific study.
  • It provides the latest assessment of India’s observed and projected climate changes.
  • It builds on the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6) by using new observational data and advanced climate models specific to India.
  • The report notes that India’s average temperature increased by nearly 0.9°C during 2015–2024 compared to the period 1901–1930.
  • The hottest day of the year in Western and Northeast India has warmed by 1.5–2°C since the 1950s, leading to more frequent and intense heatwaves.
  • Southwest monsoon rainfall has become erratic, with a decline in the Indo-Gangetic plains and the Northeast.
  • Extreme rainfall events have intensified in central India and coastal Gujarat.
  • The tropical Indian Ocean is warming at 0.12°C per decade.
  • This warming is causing marine heatwaves to increase from 20 days per year in recent decades to nearly 200 days by 2050, threatening coral reefs and fisheries.
  • The Hindu Kush Himalaya glaciers, known as Asia’s “water towers,” are melting rapidly.
  • Glacier volume is projected to reduce by 30–50% by 2100 under 1.5–2°C of global warming.
  • Arabian Sea tropical cyclones have become stronger, with maximum cyclone intensity increasing by 40% in recent decades.

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