The ozone layer remains unclear

First article in a series of two on the Montreal Protocol on ozone and stratospheric
Washington - Since the signing on September 16, 1987, by representatives of 24 countries of the Montreal Protocol on Substances that Deplete the Ozone Layer, this agreement helps reduce more and more production than a hundred substances that destroy ozone in the stratosphere and limiting employment.
Ratified by 191 countries, it has reduced considerably the production of these substances, which rose from 1.8 million tons in 1987 to 83,000 tons at the end of 2008.Because of the widespread application of the Protocol and the development of substitutes less harmful, the ozone layer, which protects our planet in the stratosphere against ultraviolet rays of the sun, has not declined since 1998 to Above the greater part of the earth. It is anticipated that it could become as dense as before 1980 to a date between 2050 and 2075.This recovery, particularly in regard to the hole in the ozone, which occurs in spring over Antarctica, depends on the continued application of the protocol and also, according to scientists, effects of climate change.
According to the deputy director of the National Center for Atmospheric Research of the USA, which reports to the Systems Laboratory Earth and solar, it was not so matter of fact when climate forecasts about the hole in the ozone layer."Now, he said, we know that while the climate is changing, there is a change in temperature in the stratosphere, which has a cooling effect while the surface warms. The water content of the stratosphere could change. Hence, the link between the problem relating to ozone and the problem on the climate becomes important and could accelerate or delay recovery of the ozone layer.

{mosgoogle center}In the stratosphere
Discovered in laboratory experiments to the years 1850, ozone (O3) is a natural gas that is present in the atmosphere. Approximately 10% of ozone are in the troposphere, located at a distance of 10 to 16 km from the Earth. The rest is in the stratosphere is above the troposphere up to 50 km altitude.
Ozone is favorable or unfavorable to life on earth according to its location in the atmosphere. In the troposphere, the increase in the amount of ozone caused by chemical pollutants may warm the surface, reduce crop yields and forest growth and decrease in humans the ability of the lungs causing chest pain, 'irritation and coughing.
Ozone is formed in the atmosphere during a series of chemical phenomena caused by the sun.
In the stratosphere, sunlight causes the breakdown of a molecule of oxygen (O2) into two atoms of oxygen (O). Each atom of oxygen combines with a molecule of oxygen to produce ozone (O + O2 = 03). These reactions occur when sunlight is present in the stratosphere, ozone production is offset by its destruction of natural gas and gas man in the stratosphere.
The results
In 2007, some 310 specialists from various countries have made public a report on the scientific evaluation of the depletion of the ozone layer, under the auspices of the World Meteorological Organization and Programme of the UN Environment .
In this report, they state: "With the implementation of the Montreal Protocol, the abundance of gases that deplete the ozone layer has begun to decline in recent years. If all countries around the world continue to comply with the provisions of the Montreal Protocol, this decrease will continue throughout the twenty-first century.

Monday, 28 April 2008
First article in a series of two on the Montreal Protocol on ozone and stratospheric Washington - Since the signing on September 16, 1987, by representatives of 24 countries of the Montreal Protocol on Substances that Deplete the Ozone Layer, this agreement helps reduce more and more production than a hundred substances that destroy ozone in the stratosphere and limiting employment. Ratified by 191 countries, it has reduced considerably the production of these substances, which rose from 1.8 million tons in 1987 to 83,000 tons at the end of 2008.Because of the widespread application of the Protocol and the development of substitutes less harmful, the ozone layer, which protects our planet in the stratosphere against ultraviolet rays of the sun, has not declined since 1998 to Above the greater part of the earth. It is anticipated that it could become as dense as before 1980 to a date between 2050 and 2075.This recovery, particularly in regard to the hole in the ozone, which occurs in spring over Antarctica, depends on the continued application of the protocol and also, according to scientists, effects of climate change. According to the deputy director of the National Center for Atmospheric Research of the USA, which reports to the Systems Laboratory Earth and solar, it was not so matter of fact when climate forecasts about the hole in the ozone layer."Now, he said, we know that while the climate is changing, there is a change in temperature in the stratosphere, which has a cooling effect while the surface warms. The water content of the stratosphere could change. Hence, the link between the problem relating to ozone and the problem on the climate becomes important and could accelerate or delay recovery of the ozone layer. {mosgoogle center}In the stratosphere Discovered in laboratory experiments to the years 1850, ozone (O3) is a natural gas that is present in the atmosphere. Approximately 10% of ozone are in the troposphere, located at a distance of 10 to 16 km from the Earth. The rest is in the stratosphere is above the troposphere up to 50 km altitude. Ozone is favorable or unfavorable to life on earth according to its location in the atmosphere. In the troposphere, the increase in the amount of ozone caused by chemical pollutants may warm the surface, reduce crop yields and forest growth and decrease in humans the ability of the lungs causing chest pain, 'irritation and coughing. Ozone is formed in the atmosphere during a series of chemical phenomena caused by the sun. In the stratosphere, sunlight causes the breakdown of a molecule of oxygen (O2) into two atoms of oxygen (O). Each atom of oxygen combines with a molecule of oxygen to produce ozone (O + O2 = 03). These reactions occur when sunlight is present in the stratosphere, ozone production is offset by its destruction of natural gas and gas man in the stratosphere. The results In 2007, some 310 specialists from various countries have made public a report on the scientific evaluation of the depletion of the ozone layer, under the auspices of the World Meteorological Organization and Programme of the UN Environment . In this report, they state: "With the implementation of the Montreal Protocol, the abundance of gases that deplete the ozone layer has begun to decline in recent years. If all countries around the world continue to comply with the provisions of the Montreal Protocol, this decrease will continue throughout the twenty-first century.
Last Updated ( Thursday, 03 July 2008 )