Global Warming

Approach of the next glacial age can be held at least on half-million years by burning energy sources excavated by human. To this optimistic conclusion led a recent study of the group of British scientists from the University of Southampton.

The researchers attempted to understand, on the basis of mathematical simulation, how the constantly increasing level of carbon dioxide can influence on the chemical processes in the World Ocean. As is known, World Ocean partially absorbs CO2 from the atmosphere, which increases its acidity. This, in turn, contributes to the dissolution of calcium carbonate into rocks, formed by sea organisms, and it’s more increasing the carbon contents in the oceans. As a result, the ability of ocean to absorb carbon dioxide is reduced.

The mathematical model of the described processes, which was consecutively developed by oceanologists from the University of Southampton, allowed them to draw the conclusion that the carbon-dioxide content in the atmosphere will not return to “preindustrial” level, when men will end to burn hydrocarbons. Moreover, if we use to the end all known fossilized minerals, then there is not any value with what speed we burn them. To burn them at the current level or even more moderately, the result will be the same - the offensive of glacial period will become not possible in the nearest 500 thousand years.

Glacial periods appear every 100 thousand years, as a result of the periodic changes in the rotation of orbit of the Earth. Changes in that how the sunlight falls on the surface of planet, contribute to the formation of extensive snowy caps, involving the climate of planet in prolonged glacial period. But a main role in such climatic changes not plays only variations in the intensity of sunlight, but the level of atmospheric CO2 is not less important.

For today the mankind has burnt, in the form of mineral fuel, nearby 300 Gt of carbon (1 Gt = 1 000 000 000 tons). The work of scientists allows predicting that if we bring this number to 1000 Gt then the next glacial age will not come. And the combustion of all reserves of hydrocarbon fuel will compel a planet to miss successively five periods of permafrost and a cold.

Scientists have long ago assumed that a quantity of carbon dioxide in the Earth’s atmosphere can increase in the very short time. And actually volumes of ??2 have strongly increased in last years, strengthening global warming. However, the matter in the fact is that the scientific workers did not consider the fact that the concentration of carbon dioxide in the waters of World Ocean exceeds six times the content of the same substance in the atmosphere.

In the process of transforming the carbon dioxide into oxygen, the part of the carbon dioxide is absorbed by ocean, but part nevertheless returns to the atmosphere. Accordingly to statistics, waters of World Ocean absorb up to 50% of emissions of ??2. Researchers declare that the ability of ocean to retain carbon dioxide considerably deteriorated recently, so, for example, in the time of the glacial period the possibility of absorption were considerably higher than today.

Even if now carry out the comparative analysis of the possibilities of World ocean it occurs that the absorption of CO2 is improved with the approximation to terrestrial poles, where the temperature of water lower. In the connection with this, the scientists declare, that the warming up of waters of World Ocean on several degrees will make the irreversible changes in the process of transforming the carbon dioxide into oxygen.

The disappearance of dinosaurs on the Earth cannot be explained by a falling of the meteorite Authors of a new hypothesis accuse global warming of destruction of giants.Dinosaurs have disappeared approximately 250 million years ago - they were joined to approximately 90% of forms of the living beings, which occupied our planet at that moment. Paleontologists from The University of Southern California came to the conclusion that the process of disappearance began 10 million years before the catastrophe, which is considered as the main reason for the loss of terrible pangolins. Moreover began to die not ground-based essences (which would be logical, if meteorite was the reason for their destruction), but the creation, which lived in depths of ocean – followed by the marine animals, that dwelled in the continental shelf and on coral reefs.

Consequently, dinosaurs were ruined by something which arrived from the ocean depths. It is supposed, that the real murderer became hydrogen sulfide. This became possible as a result of the process of global warming. Warming has begun afterward the turns of the colossal volcanic eruptions, which ejected into the atmosphere an enormous quantity of “greenhouse” gases - carbonic acid dioxide and methane. The heated ocean partially lost the ability to retain oxygen and that led to the circulation of hydrogen sulfide. This gas was produced by the bacteria lived in the ocean depths, and gradually rose to the surface.

As a result a large quantity of hydrogen sulfide was rejected into the atmosphere. As a consequence, many living beings (including dinosaurs) perished by the poisoning or by the action of harmful radiation (since hydrogen sulfide also damaged the ozone layer, which protects the Earth from different rays, which emanate from space - for example, from the ultraviolet emission).