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E-Mail IMAGE: The up to 200 m long, 15 m wide and 2 m deep sorted stone strips on the southern Sanetti Plateau (ca. 3,900 m a.s.l.) were probably formed during the. view more Credit: Heinz Veit As the driver of global atmospheric and ocean circulation, the tropics play a central role in understanding past and future climate change. Both global climate simulations and worldwide ocean temperature reconstructions indicate that the cooling in the tropics during the last cold period, which began about 115,000 years ago, was much weaker than in the temperate zone and the polar regions. The extent to which this general statement also applies to the tropical high mountains of Eastern Africa and elsewhere is, however, doubted on the basis of palaeoclimatic, geological and ecological studies at high elevations. ....
New model more accurately predicts how massive glaciers melt Statistical models of the topography of glacier beds will lead to more accurate predictions of heat flow and subsequent ice melt for decades to come By Lisa Ercolano / Published Feb 23, 2021 New research by a team that included a Johns Hopkins engineer promises to enable more accurate ice-flow predictions, helping scientists better forecast how melting glaciers will contribute to rising sea levels, which have been linked to coastal and wetland flooding and destructive erosion around the world. Journal of Geophysical Research: Earth Surface, Harihar Rajaram and the team offer a new method of estimating how heat flows upwards from the Earth to beds of ice sheets in Greenland and Antarctica, affecting their viscosity and rates of movement. ....
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