The World Meteorological Organization (whose acronym in English is WMO) has identified an increase in the destruction of the ozone in the Arctic. The loss is considered unique but not unexpected. The main cause of destruction is high on the use of chemicals in aerosols, refrigerators and fire extinguishers. The ozone layer is what protects life on Earth from the harmful effects of ultraviolet rays.The increased amount of greenhouse gases they generate high temperatures on Earth's surface.Since late March, the region considered most affected by the destruction of the ozone layer extends between Greenland and Scandinavia. The measurements show that ozone loss occurs between 15 and 23 km above the ground. In the region, more than two thirds of ozone were destroyed so far.
According to scientists, the trend is that the ultraviolet radiation does not increase in the colder regions with same intensity as in tropical areas.Ultraviolet (UV-B) have been associated with the onset of skin cancer, cataracts and damage to the human immune system.
The study released Tuesday (5) reported that the destruction of stratospheric ozone is more intense in the polar regions, when temperatures drop below - 78 degrees Celsius (º C). "The loss of ozone from experience depends on the weather. The loss of ozone in 2011 shows that we must remain vigilant and keep a watchful eye on the situation in the Arctic in coming years," said the organization's secretary general, Michel Jarraud.
An international agreement, signed by several countries, defines a series of measures for the recovery of the ozone layer. The measures include initiatives to be implemented by 2060. Without the Montreal Protocol, according to experts, the destruction of the ozone layer could be more intense. According to experts, the slow recovery of the ozone layer is due to the fact that substances that deplete it remain in the atmosphere for decades.
The ozone layer is the stratosphere, which is the second highest coverage of the atmosphere. In Antarctica, the destruction of the ozone increases in the spring because of extremely low temperatures in the stratosphere. In the Arctic, the weather conditions vary more from one year to another, and the temperatures are warmer than those recorded in Antarctica. Arctic winters, according to scientists, have not lost in the ozone layer, while the cold temperatures in the Arctic stratosphere cause destruction.