Bering Strait as a temperature stabilizer Scientists prove
Group of climate scientists after analyzing computer simulations revealed that the strait that separates North America and Russia can become a stabilizer in global temperatures. This is possible because when the temperature in the Arctic strait dry, and the water from the melting ice of the Arctic can not get to the Pacific Ocean, and is returned to the Arctic Ocean. From there, the cold water masses fall into the Atlantic with no obstacles in the way of nature, and influence miridionalnuyu circulation of the Atlantic Ocean (AMOC) and the temperature of the air above it.
Satellite image of the Bering Strait
The study began with the fact that the temperature in the northern hemisphere during the last ice age was of a large range of values. In Greenland a few years, the temperature falls, then dropped immediately to 10 ° C. This happened because the polar ice has increased dramatically, and in the ocean water level fell. In this regard, the ice shallow Bering Strait, and the water from the Arctic could not freely flow into the Pacific Ocean.
Researchers tested their theory on a computer simulator, specifying the conditions when the Bering Strait is covered with water, as it is now, and when there is no water. Indeed, as between North America and Eurasia in place Strait land bridge from there, the water is retained in the Arctic, and later pushed into the Atlantic Ocean. Such an influx of cold Arctic water creates some climatic problems as disrupted AMOC, carrying warm ocean water from the south to the north, and the cold of the north to the south. Usually in the AMOC cold water is cold, allowing it to fall down and miss the warm water to the north from the south. But if, instead of the usual salt water into the Atlantic gets fresh water from glaciers thawed, it will not "drown" in the presence of salt, though, and warm southern waters. AMOS system will stop, leading to a dramatic change in temperature, as in the case of Greenland, 80-11 thousand years ago.
If the Bering Strait operates normally, and fresh cold water freely flows into the Pacific Ocean, while the global temperature has remained relatively stable. Fortunately, in terms of global warming and rising sea levels constant, fed by the glaciers of the same we hardly be a sudden jump in temperature due to the violation of Amos, as the Bering Strait is unlikely to suddenly dry.