Earth's climate: past, present, future

Our planet's climate is changing all the time of its existence. Countless past changes were local in nature, affecting only a certain continent or hemisphere, but occasionally the case of global things, each time bringing substantial "amendments" to the evolution of terrestrial organic life.

For example, everyone knows that the Ice Age has transformed the planet into a riotous blooming ice desert. However, for some reason, have little to say that the name "Ice Age" was given only to the most recent cold snap in the world, what happened in the time between 1.7 million and 10,000 years ago, as it is more or less understood by scientists. Before him, the same as at least six times the planet was covered with ice, and six times, a period of thaw, called "interglacial". It turns out that for his "life" Earth many times freezes and thaws again. Curiously, scientists still do not understand what causes icing.

Nothing is too

To the above can be treated as "works of the past," days ", but that from a scientific point of view, 10 000 years — a trifling amount of time in the history of the planet. This means that to happen dramatic climate change may, at any time. More recently, in the XIV-XIX centuries on earth has happened relative cooling, called the "Little Ice Age" or "Maunder minimum" after the English astronomer Edward Maunder, who discovered decline in solar activity during the period. It was then left in Greenland last people in Europe for the first time in the history of ice-covered channels in the Netherlands, the Thames in London and the Seine in Paris. Some researchers, by the way, believe that if a lower average temperature on the planet has played a role in the delay of the Gulf Stream in 1310's, but the essence remains the same — the climatic changes can occur at any time and in any desired scale. This suggests that we are living in the "interglacial" time and the future bleak.

Warming …

Realizing it better than others, scientists around the world in recent years have started talking about global climate change, the consequences of which are unpredictable and irreversible. Our staff monavista.ru also not remained indifferent to the actual problem, and tried to link short-term weather events recurring in recent years, causing fires, storms, floods, with long-term trends. By analysis of publicly available sources, it was found that in the last decade sverhobilnye abnormal snowfalls and extreme rainfall substantially increase their power and began to occur several times more frequently than similar weather events in the second half of the twentieth century. As we know, an increase in precipitation in the world is directly related to global warming, another question, how much it is global.

Or cooling …

Working with documents related to climate change, which included reports by the UN and the IPCC in 2011 on this issue, we have managed to find some interesting evidence that we will not global warming, but a deep chill. Based on the direct link between the cyclical solar luminosity and temperature on Earth, many scientists argue that we are at the beginning of the Ice Age. Since the mid 90's of the last century, the luminosity of the sun began to decline, and the Earth to cool, which actively continues today and will accelerate in the future. But how then to explain the obvious signs of warming, you ask? Proponents of the theory of global cooling, agreeing with the followers of warming that the Earth is like a frying pan, heated by the sun. However, I believe that our planet in the near future, "boil" as on the stove, but instead begins to cool, as the next cycle of solar activity has passed and the current signs of warming, it is just the last "return" of the earth received her heat. Indirect confirmation of this can be a cooling of the upper layers of the oceans.

Apocalypse postponed

Apparently, the climate in the near future will happen, but what — is unknown. The thing is that the climate of our planet depends on the huge number of factors. These include the water temperature of the oceans, air flows in the different layers of Earth's atmosphere and the concentration of different gases in it, different temperature strong sea currents, the processes taking place in the biosphere, etc. etc. Predict climate change, taking into account all the circumstances affecting it very, very difficult. As a consolation to our readers monavista.ru can say with confidence that a global apocalypse with ultra-high temperatures and frozen oceans will not. We are inclined to believe that after all in 2050 is waiting for a "Little Ice Age", with a decrease in temperature of the planet by several degrees. However, history has shown that even these small changes can become a cause of crop failures, epidemics and high mortality over large areas. Together let's hope that Russia together with all mankind, and get over it.

Source: monavista.ru

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