How are climate change and the sea level rise affecting the very existence of many island nations? Discuss…

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How are climate change and the sea level rise affecting the very existence of many island nations? Discuss with examples.

Ghissu Editorial · Accepted Answer

Climate change and sea level rise threaten island nations through land loss, saltwater intrusion, storm surges and dying reefs, and ultimately their statehood and population. Sea level around Tuvalu rose about 15 cm in 30 years, 1.5 times the global average (NASA, 2023).

**Introduction**

Global mean sea level rose about 0.20 m between 1901 and 2018 (IPCC AR6), and the rate is accelerating. For atoll nations like Tuvalu, Kiribati and the Maldives this threatens their very existence, though small island states emit under 1% of global greenhouse gases (UN, 2024).

**How Rising Seas Erode Island Habitability**

1. **Land loss**: Sea level around Tuvalu rose about 15 cm in 30 years, 1.5 times the global average (NASA, 2023), and about 80% of the Maldives lies under a metre above the sea.
2. **Salty freshwater**: Seawater intrusion into atoll freshwater lenses kills Tuvalu's pulaka crops and leaves people dependent on rain tanks.
3. **Storms and reefs**: Higher seas let king tides and cyclones like Pam (2015) reach further inland, while bleached reefs threaten fisheries.

**Threats to Statehood, People and Economy**

SKETCH: iceberg | Island Existential Crisis
visible: Shoreline erosion, Coastal floods, Salty wells
hidden: Shrinking EEZ, Loss of statehood, Forced migration, Lost culture

1. **Statehood in doubt**: Since statehood assumes a defined territory, Tuvalu amended its constitution in 2023 to declare its statehood permanent and is building a "digital nation".
2. **Planned migration**: Kiribati bought land in Fiji in 2014, and Australia's Falepili Union (2023) offers 280 Tuvaluans a year a migration pathway.
3. **Legal fightback**: The Pacific Islands Forum's 2021 declaration freezes maritime zones, and Vanuatu won the ICJ advisory opinion of July 2025 on climate obligations.

**Conclusion**

Rising seas threaten island nations' land, water, food and legal existence, a stark climate injustice. Deep emission cuts, adaptation finance and India-backed initiatives like Infrastructure for Resilient Island States can help them survive with dignity.

How are climate change and the sea level rise affecting the very existence of many island nations? Discuss with examples.

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