Paleoclimate perspectives of 21st-23rd centuries, IPCC projections and tipping points

Andrew Glikson
Earth and paleo-climate scientist
Australian National University

According to NOAA (2018) Arctic surface air temperatures continue to warm at twice the rate relative to the rest of the globe, leading to a loss of 95 percent of its oldest ice over the past three decades. Arctic air temperatures for 2014-18 have exceeded all previous records since 1900 and are driving broad changes within the Arctic as well he sub-Arctic through weakening of the jet stream which separates the Arctic from warmer climate zones. The recent freezing storms in North America represent penetration of cold air masses through a weakening and increasingly undulating jet stream barrier. This weakening also allows warm air masses to move northward, further warming the Arctic and driving further ice melting. The freezing storms in North America are cheering those who refuse to discriminate between the climate and the weather.” Read more . . .

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