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A new study has examined how warming seawater intrudes between coastal ice sheets and the ground they rest on. The warm water melts cavities in the ice, allowing more water to flow in, expanding the cavities further in a feedback loop. This water then lubricates the collapse of ice into the ocean, pushing up sea levels.
The researchers used computer models to show that a "very small increase" in the temperature of the intruding water could lead to a "very big increase" in the loss of ice - the tipping point behaviour.
It is unknown how close the tipping point is, or whether it has already been crossed. However, the researchers said it could be triggered by temperature rises of just 10ths of a degree, and very likely by the rises expected in the coming decades.
Sea level rise is the greatest longterm impact of the climate crisis and is set to redraw the world map in the coming centuries. It has the potential to put scores of large cities, from New York City to Shanghai, below sea level and to affect billions of people.
هذه القصة مأخوذة من طبعة June 26, 2024 من The Guardian.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
بالفعل مشترك ? تسجيل الدخول
هذه القصة مأخوذة من طبعة June 26, 2024 من The Guardian.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
بالفعل مشترك? تسجيل الدخول
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