Melting of the Antarctic ice sheet will cause sea level rises of about two and a half metres around the world, even if the goals of the Paris agreement are met, research has shown. The melting is likely to take place over a long period, beyond the end of this century, but is almost certain to be irreversible, because of the way in which the ice cap is likely to melt, the new model reveals. Even if temperatures were to fall again after rising by 2C 3. The Antarctic ice sheet has existed in roughly its current form for about 34m years, but its future form will be decided in our lifetimes , according to Levermann. Temperatures of more than 20C were recorded for the first time in the Antarctic earlier this year. The committed sea level rise from Antarctica even at 2C represents an existential threat to entire nation states.
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Explainer: How climate change is accelerating sea level rise
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Singapore faces 'twin challenges' from climate change, says minister
Sea level rise SLR is one of the most severe impacts of climate change, with rising waters threatening to inundate small-island nations and coastal regions by the end of the century. At the same time, SLR is one of the impacts with the largest uncertainties, with different studies projecting widely different ranges over the 21st century. However, a number of studies published in the years since then suggest that the worst-case projections for SLR could be much higher — up to 2m or more this century. In this explainer, Carbon Brief examines estimates of historical sea level rise and the evidence that rates are accelerating. It explores the drivers of historical and future sea level rise, including thermal expansion of water, melting glaciers and melting ice sheets.
This indicator describes how sea level has changed over time. The indicator describes two types of sea level changes: absolute and relative. This figure shows average absolute sea level change, which refers to the height of the ocean surface, regardless of whether nearby land is rising or falling.