360° UPSC Mains Analysis

Jaishankar to address annual high-level UNGA session on September 26

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Flora & Fauna

Heritiera fomes (Sundari tree)
Status: Endangered
Threat: Increased soil and water salinity due to sea-level rise, which triggers 'top-dying' disease and reduces its distribution in the Sundarbans.
Acropora cervicornis (Staghorn coral)
Status: Critically Endangered
Threat: Vulnerable to ocean warming, marine heatwaves, and acidification, leading to widespread bleaching and structural collapse of reef ecosystems.

Ecology Impact

The existential threat of sea-level rise highlighted in the UNGA session directly impacts fragile coastal ecosystems, such as the Sundarbans Ramsar Site, by causing habitat fragmentation and coastal erosion. Increased tidal inundation and saltwater intrusion degrade these critical buffer zones, threatening coastal biodiversity. In India, managing these impacts is governed by the Coastal Regulation Zone (CRZ) Notification, 2019, issued under the Environment (Protection) Act, 1986, to conserve fragile marine environments.

Science & Tech Angle

The scientific monitoring of sea-level rise relies on satellite altimetry missions, such as the Sentinel-6 Michael Freilich satellite, which measure sea surface height with millimeter-level precision. Additionally, understanding ocean warming involves tracking thermal expansion and thermodynamic changes using global networks of autonomous profiling floats like the Argo program.

Climate Change Link

The UNGA high-level meeting on climate action and just transition directly addresses the global imperative to limit warming to 1.5°C under the Paris Agreement (2015). Mitigating greenhouse gas emissions is crucial to slowing thermal expansion and ice-sheet melt, which drive the sea-level rise discussed at the summit.

Sustainable Development

The discussions align with SDG 13 (Climate Action) and SDG 14 (Life Below Water) by addressing marine and coastal vulnerabilities. Furthermore, the focus on a 'just transition' supports SDG 8 (Decent Work and Economic Growth) and SDG 10 (Reduced Inequalities) by ensuring that the shift to a green economy does not disproportionately burden developing nations.

International Frameworks

Paris Agreement (2015)
Sets the global target to limit global warming to well below 2°C, preferably 1.5°C, which is vital to preventing catastrophic sea-level rise.
Ramsar Convention on Wetlands (1971)
Provides the framework for the conservation and wise use of wetlands, including coastal mangroves threatened by rising sea levels.
United Nations Framework Convention on Climate Change (UNFCCC, 1992)
The parent treaty of the Paris Agreement, facilitating international negotiations on climate action and just transition pathways.

Sources consulted

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