Three Quarter of World’s Small Islands like Tahiti, home to 16 Million People, Will be More Arid by Mid Century

Source: The Guardian

Climate change could aggravate water shortages in three-quarters of world’s small islands by 2050, researchers warn.

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Tahiti Island, French Polynesia. Three-quarters of the world’s small islands are set to get more arid by mid-century. Photograph: DEA / C. DANI-I. JESKE / UIG / R

Climbing sea levels bedevil low-lying islands.

But a hotter planet brings a less obvious menace: drought.

Three-quarters of the world’s small islands, home to 16 million people, are set to get more arid by mid-century, according to a study published in journal Nature Climate Change on Monday.

Warmer temperatures will evaporate more water than they replenish in rainfall, the survey of 80 island groups found.

Among the most severely affected are the Lesser Antilles in the Caribbean including St Lucia and Grenada, French Polynesia – the subject of paintings by impressionist Paul Gauguin – and the Robinson Crusoe Islands in the south Pacific.

Islands in the tropics like the Marshall Islands and Kiribati will experience more rainfall this century, however.

Many islands already face acute water scarcity due to limited catchment areas and demand from growing populations.

But precise forecasts for these small archipelago and atoll nations are in short supply, as they do not typically register in global climate models.

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