Warmer climate — colder than the Arctic? Scientists have shown
For modeling of climate change, scientists use data flow Eemianskogo interglacial period, which began 125,000 years ago after Saalianskogo icing. However, researchers in Germany have found evidence showing that such use is inappropriate and delivers more erroneous data, as the current period is fundamentally different from the previous one.
Average sea surface temperatures in the Norwegian Sea severnoyAtlantike. The figure clearly observed the transfer of heat to high latitudes.
Despite the fact that, as now, in a period of warming Eemiansky Greenland lost much of its centuries-old glacial reserves, perhaps even more so than now, and the sea level rose significantly, the events concerning the Arctic and the Arctic Ocean, have evolved quite differently .
In today's world atmospheric circulation delivers huge portions of heat in the northern latitudes of the planet. A striking example is the well-known Gulf Stream and the North Atlantic during the northern extension, bringing warm weather to the north, not only in Europe but also in the Arctic. Recent years, observations have shown that the amount of heat has increased dramatically, and the ice began to melt in the Arctic faster and on a permanent basis. Previously, it was assumed that the same thing happened 125,000 years ago, that is in the period of summer Arctic Eemiansky was virtually no ice.
However, after studying samples of ancient sediments, taken west of the Irish islands in the Atlantic and east of. Jan Mayen in the Arctic. The high temperatures of the previous warming was confirmed in samples from the Atlantic. As for the Arctic, and there in Eemianskuyu era was much colder than expected, especially when compared to current levels.
This may indicate a weaker Atlantic currents at that time due to a more severe icing period preceding the warming in comparison with our ice age. So, in the Arctic Eemianskuyu era was ice is stronger than it is now, and the Atlantic warmed infill warm southern currents. To form the current models of climate change, scientists have to take this into account in order to receive a true simulation results.