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Sea level rise from melting glaciers and ice sheets caused by climate warming above pre-industrial levels


University of California, Irvine, 949-824-5011, Irvine, California, 92697, USA

The ice sheets in Greenland and Antarctica, combined with the glaciers and ice caps around the World, are contributing faster and sooner than expected to global sea level rise. Half a century observations, physical models, and paleoclimate records suggest that sea level rise will exceed 1 meter this century, but more extreme rates of sea level rise are not to be excluded. I review the current state of knowledge on ice sheet and glacier mass balance, its driving physical mechanisms, their impacts on future sea level rise, and whether the most vulnerable sectors of Antarctica and Greenland have passed, or will soon pass, a point of no return. In several sectors of Greenland and Antarctica, I conclude that multimeter sea level rise is inevitable but the rate of sea level rise will depend on how urgently we keep climate warming under control and subsequently bring the climate system back toward pre-industrial levels. To reduce the ncertainties of projection of rapid rates of sea level rise in the coming century, significant research investments will be required, orders of agnitude lower than the cost of adaptation to sea level rise, to obtain critical observations and develop more reliable atmosphere-ocean-ice coupled models.

Keywords: climate change, ice sheets, glaciers, sea level, tipping points, instability, impacts
DOI: 10.3367/UFNe.2021.11.039106
Citation: Rignot E "Sea level rise from melting glaciers and ice sheets caused by climate warming above pre-industrial levels" Phys. Usp., accepted

Received: 15th, October 2021, 22nd, November 2021

: Rignot E «Sea level rise from melting glaciers and ice sheets caused by climate warming above pre-industrial levels» ,  ; DOI: 10.3367/UFNr.2021.11.039106

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