Friday, September 25, 2009

UV Radiation Increasing in Antarctica and Tropical Regions

Climate change is more than just the emission of green house gases and melting of Arctic sea ice. Scientists have come up with regional manifestations of climate change and have stated that this problem will not only change the atmospheric circulation but also increase the ozone flux from the upper atmosphere to the lower.

UV radiation is all set to increase at the ground level with the depletion of the ozone layer. It was recently discovered by the physicists at the University of Toronto that the changes in the ozone layer will bring down the UV radiation in northern high latitude regions like northern Canada, Scandinavia and Siberia but increase in Antarctica and tropical regions. Increase in the flux of ozone has resulted in disparity in the amount of UV radiation reaching different regions. While the amount of radiation might decrease 9% over northern high latitude regions, it is expected to increase by 20% over southern high latitudes during summer and spring season by the end of this century.

Increased ultraviolet rays will result in more cases of eye cataract, skin cancer and damage to the immune system in humans as well as animals. If you thought decrease in the amount of UV radiation in some regions will solve problems, think again. Decreased radiation will have adverse effects on the production of vitamin D for people who live in regions where sunlight is very limited. Scientists have stated that ultraviolet rays and air quality will affect ecosystem and human beings to a great extent in the coming years. The present need is to make sure that our activities don’t cause further damage to the ozone layer because as it keeps on reducing, the earth’s surface will get more exposed to shorter UV wavelengths of the sun’s radiation. This radiation will cause more damage to living things.

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Sunil said...

Cool post!!!!

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