Amazon lowland withers

The year 2010 was abnormally hot, not only for the European part of Russia, or, as shown by recent studies, such as Greenland. A group of researchers from Brazil and the UK, led by Dr. Simon Lewis (Simon L. Lewis) from the University of Leeds found that the summer of 2010 was the driest in the last 100 years for the Amazon forest. Event of global scale as the authors note, the implications of this major drought should feel the entire planet. The fact that the forests of the valley of Amazon — the world's largest absorber of carbon dioxide. Perhaps the second most power after the oceans. As explained by Dr. Lewis, the drought killed the plants, which absorb carbon dioxide through photosynthesis. Means more of this greenhouse gas in the atmosphere is. That is what most bothers scientists. Dry trees can also become an additional source of carbon dioxide as the carbon dioxide emitted by rotting. "Two severe droughts followed one after the other within five years — a serious threat to the Amazon forest. If this trend continues, these ecosystems have reached a point where they are out of carbon sinks will become a source of the greenhouse gas, "- says Dr. Lewis. Scientists compared the satellite data on the number of precipitation in the Amazon lowlands in 2010 and 2005. Their calculations showed that in the 2005 drought covered 37% of the lowland, and in 2010 suffered from a lack of rainfall to 57% of the territory. While in 2005, only one stood out "epicenter" drought — the south-west lowlands in 2010, these "epicenter" was several. According to Dr. Lewis, many climate models predict that the future of drought in the region will be repeated more often. One reason for this — the temperature increase of the surface waters of the Pacific Ocean. In those years, when the index of El Niño Southern Oscillation, or increases in the Amazon falls less rainfall. Influence on rainfall is high and the temperature of the surface waters of the Atlantic. Their arguments lead scientists in the article «The 2010 Amazon drought», published in the latest issue of the journal Science.

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