Sea Level Rise
A new study shows that channels beneath Antarctic ice shelves can trap warm ocean water and accelerate melting from below. Researchers focused on the Fimbulisen Ice Shelf in East Antarctica and found that this process may make even cold regions more vulnerable. The findings suggest current climate models could underestimate future sea level rise.
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Building on March research revealing sea levels underestimated by nearly a foot in many coastal areas—affecting 80 million people below sea level—a new study maps accelerated land subsidence across 40 major river deltas. Subsidence often exceeds sea level rise tenfold, heightening flood risks for megacities from Shanghai to Jakarta.
Scientists have recorded the Hektoria glacier on the Antarctic Peninsula retreating 25 kilometres in just 15 months, the quickest in modern history. This rapid collapse, up to 10 times faster than previous records, raises concerns for other glaciers and global sea level rise. The event began in early 2022 with the disintegration of stabilizing ice.
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Scientists have found that global sea levels are climbing more quickly than at any time in the past 4,000 years, posing severe risks to China's major coastal cities. The rapid rise, driven by warming oceans and melting ice, combines with land subsidence from human activities like groundwater pumping. Cities such as Shanghai are implementing measures to stabilize the ground amid these threats.