The United Nations Development Programme (UNDP) on Tuesday released alarming new data indicating a significant increase in coastal flooding risks.

Over the past two decades, sea level rise has already increased the flood risk for 14 million people in coastal areas. This risk is expected to grow nearly fivefold by 2100, affecting nearly 73 million people.

The UNDP, in collaboration with the Climate Impact Lab (CIL), unveiled this data through the Human Climate Horizons platform.

This tool provides detailed mapping of flood susceptibility, highlighting the areas where homes and infrastructure are most at risk due to sea-level rise. The data suggests a doubling of flood risk exposure in coastal cities by the end of the century.

Notably, regions in Latin America, Africa, and Southeast Asia are facing severe threats of permanent inundation. This could have dramatic implications for human development, with low-lying areas in various Small Island Developing States at particular risk.

Under the most severe global warming projections, around 160,000 square kilometers of coastal land could be underwater by 2100. This scenario would affect major coastal cities in countries like Ecuador, India, and Vietnam. However, significant emission reductions could save about half of this at-risk land from inundation, according to the report.

Continue reading on Xinhua…

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Climate Impact Lab
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