According to the World Meteorological Organization (WMO), thirteen of the warmest years on record have occurred in the last fifteen years."We reliable science, it clearly indicates that the world is warming and that this warming is caused by human activity,
— Said at the UN climate summit in Durban (South Africa), WMO Secretary-General Michel Jarraud, adding that policy makers should take note and another conclusion: — The concentration of greenhouse gases in the atmosphere reached a new high and very fast approaching, a corresponding increase in average global temperature 2-2,4? C ». Recall that, according to experts, increasing the threshold above dvuhgradusnogo can cause far-reaching and irreversible changes in the world.The recent flooding in Bangkok (photo I Prahin).2011 is likely to be crowned the decade (2002-2011), which will be a very hot, like 2001-2010. In fact, while it is the tenth from 1850, when he began accurate observations, despite La Ninyu, which became one of the most powerful in the last 60 years. It started in the second half of 2010 and continued until May 2011. The report noted that this phenomenon is happening every three to seven years, has led to a number of weather extremes, including drought in East Africa, the islands of the central equatorial Pacific and the southern United States. It also aggravated flooding in southern Africa, eastern Australia and southern Asia.Although La Niña and its meteorological counterpart of El Niño are not caused by climate change, increasing ocean temperatures due to global warming may affect their intensity and frequency, scientists warn.In most regions, the average surface temperature over land was above long-term averages. Temperatures in northern Russia from January to October in places higher than the average of 4? C. In Finland recorded the hottest summer in 200 years.
The area of Arctic sea ice shrank to the second after the 2007 minimum. Besides ice set a record for subtlety.
Report also lists the following weather extremes (some of which are associated with La Niney) 2011.East Africa.
In this region, where agriculture is almost entirely dependent on rain, severe drought that gripped many countries, lasted b? Most of the year. Particularly affected northern Kenya, west of Somalia and some areas of Ethiopia. According to the UN Office for the Coordination of Humanitarian Affairs, about 13 million people in need of emergency assistance. Since October, when at last the long-awaited rains, many of these areas are subject to devastating floods.East Asia.
Precipitation during the rainy season in 2011 were well above average. Stronger than all affected Thailand and Laos. In Thailand, Cambodia, Myanmar and killed about a thousand people. In Bangkok, the situation was exacerbated by a high tide for a few weeks, from mid-October. Damage is estimated at billions of dollars.North America. Is home to fourteen extremes, each of which caused damage to at least one billion dollars. A significant part of the Southern United States embraced an unprecedented drought. In Texas, the amount of rainfall for the first ten months of the year was 56% below normal (anti-record), and the temperature at 3? C exceeded the long-term rate. A number of the northern and central states, by contrast, hit unprecedented rains that led to severe flooding. The same area affected by Hurricane Irene in August and Tropical Storm Lee in September.Central and South America. In the mountains north of Rio de Janeiro in a few hours received more than 200 mm of precipitation. Killed at least 900 people. This is one of the worst natural disasters in the history of Brazil. In October floods hit Central America in Uyre (El Salvador) fell — my God! — 1513 mm. Also hit Guatemala, Honduras, Costa Rica and Nicaragua.South Asia. For the second consecutive year, Pakistan has overflowed flooding, although this time they were more localized than in 2010. In Sindh province recorded a record rainfall in the rainy season.Dmitry Tselikov
Prepared according to Discovery News.