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The ozone layer in the Arctic

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Monday, 28 April 2008

While all media preoccupant of stratospheric ozone hole in Antarctica who just beat all records, is that the stratospheric ozone of the Arctic bears do not really better.Experience on atmospheric chemistry (ACE) conducted aboard the new Canadian scientific satellite SCISAT take measurements of the ozone layer in Canada, particularly in the Arctic. Scientists are concerned about ozone depletion in the Canadian Arctic where large losses of about 45% were observed at the end of 90 years.  A report published recently by Environment Canada and reports of recent findings Canadian scientists showed that the phenomena of ozone depletion in the Arctic could worsen during the next ten to twenty years despite the measures taken to Internationally to reduce the quantities of chemicals that destroy ozone.  Losses increasingly important ozone in the Arctic could be damaging to the fragile Northern agencies. They could also lead to a thinning of the ozone layer above the southern part of Canada as ozone is redistributed in order to offset losses in the Far North.During the next ten to twenty years, the phenomena of impoverishment may even become as frequent and as serious as in Antarctica.  Other recent results  The ozone depletion continues above the rest of Canada where values have decreased by about 6% on average since the end of 70 years, with greater losses of about 8 to 10% spring.The new satellite will help Canadian scientist to take measurements of the ozone layer from space.Because of the depletion of the ozone layer, UV to the origin of sunburn increased by 7% on average in Canada, with peaks reaching between 10 and 12% in the spring. These increased levels, which should remain higher than normal during the next thirty to forty years, will have repercussions on the health of human beings, crops, forests and marine ecosystems and freshwater.  Verification of measures taken by the satellite in the Arctic.   In 1987, Canada became the first country to address the issue of ozone in the Arctic, following the discovery of the "hole" over Antarctica. The loss of Arctic ozone is highest in winter, during which research should be conducted in the permanent darkness and temperatures regularly fall to -40 degrees Celsius. To help scientists to work in a hostile environment, Environment Canada has built a scientific laboratory of ozone in Eureka, on Ellesmere Island, a remote weather station located less than 1 000 km from the North Pole. Inaugurated in 1993, the laboratory has enabled researchers to conduct intensive research on ozone above the Arctic, and it has now become an international centre for research. Search Canadian ozone Canada has made a significant contribution to the study of ozone on a global scale, both in monitoring ozone levels in conducting research on the causes and effects of the destruction of this layer the atmosphere.  Environment Canada scientists have also developed the spectrophotometer Brewer, a study of ozone on the cutting edge of technology. Recognized as the most accurate in the world to measure ozone, it is now used in over 35 countries. Environment Canada operates a Canada-wide network of monitoring stations that have ceased to observe the ozone layer over thirty years. The first recordings, made before that human activities have had a significant influence on the ozone layer, are essential to understanding the changes taking place today. Canadian scientists use a variety of instruments to study the ozone layer, including research balloons at high altitude, satellites and measuring instruments on the ground.

Last Updated ( Thursday, 03 July 2008 )

 

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