From UPSC perspective, the following things are important :
Prelims level: UN World Water Development Report, 2025
Why in the News?
On March 21, 2025, the United Nations marked the first-ever World Day for Glaciers, and in conjunction, the United Nations World Water Development Report issued a disturbing warning about the rapid loss of glaciers.
Key Highlights of the Report:
- Hindu Kush Himalayas (HKH) Glacier Loss: Glaciers are melting 65% faster (2011-2020) than the previous decade, with up to 50% shrinkage by 2100 if global temperatures rise by 1.5-2°C.
- WMO’s Climate Report: The 2024 climate year was the warmest in 175 years, reinforcing the link between rising temperatures and accelerated glacier melt.
- Unprecedented Glacier Mass Loss: Over 9,000 billion tonnes of ice lost since 1975, with 450 gigatons lost in 2024 alone.
- Rising Sea Levels: Melting glaciers contribute to sea level rise, displacing 200,000 to 300,000 people annually and increasing coastal flooding risks.
- Increased Wildfires and Dust Storms: Rising wildfires and dust storms accelerate glacier melt by darkening their surfaces.
- Permafrost Thawing: Thawing permafrost releases carbon and nutrients, worsening climate change and increasing landslide risks.
- Declining Snow Cover: A 7.79% global decline in persistent snow cover from 1979-2022 affects water resources.
About World Glaciers Day
- March 21, 2025, marked the first-ever World Day for Glaciers, aimed at raising awareness about glaciers and the risks posed by their loss due to climate change.
- It was declared by the UN in its resolution A/RES/77/158 along with the International Year of Glaciers 2025.
- The day calls for governments, organizations, and individuals to reduce greenhouse gas emissions and adopt sustainable water management practices.
| [UPSC 2019] Consider the following statements:
1. Global warming might trigger the release of methane gas from these deposits. 2. Large deposits of ‘methane hydrate’ are found in Arctic Tundra and under the seafloor. 3. Methane in atmosphere oxidizes to carbon dioxide after a decade or two. Select the correct answer using the code given below. (a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3 |
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