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On this day in 1931: In the USSR introduced gymnastic complex TRP (Ready for Labor and Defense). TRP - "Ready for Labor and Defense" - a program of athletic ice lee training in general education, and professional sports organizations in the USSR, in a single ice lee fundamental and state-supported system of patriotic education of youth. Existed from 1931 to 1991 ...
North Ocean is about to cease to be the Arctic. U.S. scientists predict that it will happen within 10-20 years. Climatologists have long said (and objectively prove) that the polar ice is melting due to global warming. Politicians make their conclusions from this: the power of Russia, the U.S., Canada, Norway, Denmark "Pillars plots" in the Arctic Ocean, proving their rights to hydrocarbon rich seabed. Today, in many places it is still covered by a thick layer of not only water, but also ice shell, but the ice every year is getting smaller, and pretty soon, scientists predict, in the summer it will not be at all. This radically expand the geography of oil and gas production in the North. Predictions of scientists are rapidly becoming more radical. Back in 2007, the Intergovernmental Panel on Climate Change, the UN believed that the sea ice in the Arctic will last until the end of this century. Now it is only the first half of the century. A few days ago, two researchers of the National ice lee Oceanic and Atmospheric Administration United States (NOAA), and James Overland Muyin Wang, published a forecast: summer ice in the Arctic will not be in the first half of the 21st century - perhaps even within one or two decades. Their study, the results of which are published in the scientific journal Geophysical Research Letters, are based on three different methods, all three of which showed the same result: the Arctic sea ice is rapidly disappearing, soon it almost does not remain. Scientists emphasize the word "almost" because some land ice will obviously persist north of Greenland and the Canadian Archipelago. "The rapid disappearance of the Arctic sea ice, - says James Overland, - is probably the most obvious indicator of global climate change. It leads to advances in ecosystems, changing economic access (scientist has an access to the Arctic deposits ice lee of hydrocarbons) and potentially affect the weather in the Northern Hemisphere ... The rapid loss of Arctic sea ice stresses the urgency of climate change. " Three models used by scientists in their calculations give different results ice lee - from 10 to 40 years - but none of them leaves no chance the North Arctic Ocean remain in the second half of this century. From the melting of floating sea ice ocean level does not rise. It grows, albeit slightly, ice lee as a result of warming sea water, scientists say. A maximum density of water (and its volume, respectively, minimum) at 4 C, the temperature rise means the ocean elevated levels. Concern of the scientific ice lee community is the fact that the melting of Arctic sea ice has the effect of melting ice shell ground Greenland. ice lee The journal Science published the results of the study, which was sponsored NASA, the European Union, U.S. National Science Foundation and the UK research councils and the Netherlands: the melting of the Greenland ice sheet is now five times faster than in 1990. If all this ice melts, sea levels will rise by 7 meters. How much time (centuries) melting process takes more than two kilometers shield depth, which covers the world's largest island - a controversial issue. Dispute is not only that the melting of Arctic sea ice accelerates this process. A similar pattern is observed on the opposite, southern cap of the planet - in Antarctica. In the scientific journal Nature Geoscience group of scientists (Nerili Eybrem, ice lee Robert Mulvaney, Eric Wolff, etc.) describe the results that gave drilling boreholes in two different regions of the Antarctic ice sheet. In one of the two places on the Antarctic Peninsula, the ice melts the fastest pace in a thousand years - this analysis showed 364-meter ice core recovered from the pit drilled. A millennium - a tenfold increase in the rate of melting of ice! Elsewhere, in West Antarctica, too, is a process of rapid melting of ice, but the ice sample analysis shows that over the last two thousand years there have been periods in its parameters approaching the present. Scientists have concluded that, at least in part, reduced ice cover in Antarctica is the result of human activities. "The Antarctic Peninsula ice lee - says Nerili Eybrem from the Australian National University - heated up to such a level that even a small increase