New elevation data triple estimates of global vulnerability to sea-level rise and coastal flooding


Kulp, Scott A., and Benjamin H. Strauss

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Kulp, Scott A., and Benjamin H. Strauss. “New Elevation Data Triple Estimates of Global Vulnerability to Sea-Level Rise and Coastal Flooding.” Nature Communications 10, no. 1 (2019).


New elevation data show that by midcentury frequent coastal flooding will rise higher than areas currently home to hundreds of millions of people.Under high emissions, CoastalDEM indicates up to 630M people live on land below projected annual flood levels for 2100, and up to 340M for mid-century, versus roughly 250M at present. The authors estimate one billion people now occupy land less than 10m above current high tide lines, including 250M below 1m.

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