The ozone hole increases in 2008 compared to 2007
The European Space Agency warns that the ozone hole, located over Antarctica, is greater this year than in 2007, both in size and in ozone loss. Despite this, it is not as big as it was in 2006.
Ozone is the atmospheric layer located about 25 kilometers above the earth’s surface. This layer acts as a filter for the sun’s rays that fall on the Earth in the form of ultraviolet rays. These rays are known to cause skin cancer in humans and harm marine life.
This year, the region of the affected ozone layer, which is located above the South Pole, has reached 27 million square kilometers, two million square kilometers more than last year. In 2006, the extension of the hole reached a record figure: 29 million square kilometers.
Annual variations in the size of the ozone hole depend on weather conditions. This year’s high temperatures have caused higher than normal temperatures in the Antarctic stratosphere, which has favored the enlargement of said hole.
Scientists are studying the problem in depth to try to find out when the lost ozone will be recovered, and if this will be possible in an environment in which more and more greenhouse gases are being emitted.
More information at Ensa. Source: Trends 21