Hurricanes every year become more dangerous threat. That is the conclusion of the study, which was conducted by the Australian National University in Canberra. In turn, the American experts, assessing the data, warn in half a century the strongest winds, "learn" to destroy almost all buildings in its path.
To this joyless for Humanity opening Australian researchers have, based on information obtained from seven satellites from 1985 to 2008. They analyzed the data, using one of five independent statistical evaluation methods, but in all cases the conclusions were the same. It turned out that 23 years of strong winds over the oceans is gaining speed.
Although in general the wind speed for more than two decades has not changed, the strongest winds this figure increased by about 0.5% each year, and the height of the biggest waves increased by 0.25-0.5% per year. The situation is particularly clear in the Southern Hemisphere. For example, off the coast of South Australia's largest waves increased from 5 to 6 m, and the most extreme winds were blowing at 10% stronger.
Realism of this picture, confirmed to RBC daily, and head of the Department of Meteorology and Climatology, Faculty of Geography MSU professor Alexander Kislov: "We have a mean climatological data by regions of the Earth. Wave height in the ocean is associated with a certain strength cyclones and other conditions. And if climate change is happening, then there began to penetrate more violent hurricanes. That's when we get in a given area increased wave height. Atmospheric conditions fluctuate, and he proved this effect. Say, in a region where never caught tropical storms, they suddenly start to come. "
However, according to Kislova does not mean global change, and the information itself on enhancing the frequency of hurricane events in the world are still not very reliable.
Meanwhile, an oceanographer at the University of Miami in Florida, Mark Donelan said that if the situation described by the Australian National University, and holds the fastest speed of the winds will continue to grow annually at the same rate, then it can lead to very bad consequences in 50 years.
According to him, by the time the destructive force of hurricanes fifth, the highest category on the Saffir-Simpson scale (it includes hurricane speeds over 70 m / s or 250 km / h) will increase so that the hurricane would destroy the already 90% buildings, minimizing the chances of survival of people in a natural disaster.