Ozone layer showing 'signs of recovery', UN says - BBC News
If it's accurate, it underlines the potential power of international agreement."CO2 still problematicThe good news on ozone comes in the wake of bad news on the gases fuelling climate change. The largest hole in the ozone layer appears over Antarctica "We have to be a bit cautious, but this does look on the face of it like some very good news," he told BBC News
Whales and other fishes have plankton as their main food, and if plankton die because of these UV rays, whales will start dying too, because they will not have anything to eat. THE OZONE HOLE ON ANIMALS AND PLANTS UV rays can go through water and end up killing small water animals or plants, called 'plankton' which form the base of the food chain in oceans and seas
Press Release - Increasing Antarctic sea ice extent linked to the ozone hole - British Antarctic Survey
The effects of the ozone hole propagate down through the atmosphere during the summer and autumn so that the greatest increase in surface winds over the Southern Ocean has been during the autumn. In contrast, East Antarctic has shown little change or even a small cooling around the coast, which is consistent with the small increase in sea ice extent off the coast
The Ozone Hole
Another story goes that the TOMS satellite data didn't show the dramatic loss of ozone because the software processing the raw ozone data from the satellite was programmed to treat very low values of ozone as bad readings! Later analysis of the raw data when the results from the British Antarctic Survey team were published, confirmed their results and showed that the loss was rapid and large-scale; over most of the Antarctica continent. CFC's are a common industrial product, used in refrigeration systems, air conditioners, aerosols, solvents and in the production of some types of packaging
Polar stratospheric clouds (PSCs), which form during periods of very low temperatures, chemically alter normally-inert CFCs and related chemicals to destroy ozone in the presence of sunlight, effectively putting a hole in earth's protective ozone blanket. Antarctic atmospheric data going back to 1957 showed an alarming decline in ozone values over Antarctica each spring - effectively a hole in the ozone layer
Ozone Layer and Causes of Ozone Depletion - Conserve Energy Future
Causes of Ozone Layer Depletion During the last several decades, human activities have resulted in considerable reduction in the ozone layer of the atmosphere. The problem with the Ozone-Depleting Substances (ODS) is that they are not washed back in the form of rain on the earth and in-fact remain in the atmosphere for quite a long time
World of Change: Antarctic Ozone Hole : Feature Articles
On the other hand, because of the impact of greenhouse gas warming, the ozone layer over the tropics and mid-southern latitudes may not recover for more than a century, and perhaps not ever. Models suggest that the concentration of chlorine and other ozone-depleting substances in the stratosphere will not return to pre-1980 levels until the middle decades of this century
Hole in the Earth's ozone layer Is finally closing up, NASA says - AOL.com
Flag Share Share Reply 0 rate up pasquamar May 15 2015 at 1:34 PM Please think about CFC's before you post, because some of these posts are pitiful.We finally did something right to this little blue marble we all live on. "With this new information, we can look into the future and say with confidence that ozone holes will be consistently smaller than 8 million square miles by 2040," Susan Strahan, a senior research scientist at NASA Goddard Space Flight Center, said in a video about the study
The Antarctic Ozone Hole
If there is a hole in the ozone layer then this means that more harmful ultra-violet rays get through than are good for us or many other life forms, plant or animal. They are a group of chemically similar gases used in refrigeration systems, air conditioners, aerosols, solvents and in the production of some types of packaging
Discovering Antarctica - A-level - The ozone hole
Add a trend line to the graph and create a caption that describes the nature of the relationship between the two variables and the strength of the relationship shown. Because these chemicals are so inert, they are able to stay in the atmosphere long enough to be carried upwards to the stratosphere where they can damage the ozone layer
These CFCs had made their way into the upper atmosphere where the much stronger UV radiation from the Sun had broken them down into their component molecules, releasing the potentially damaging chlorine (and bromine) atoms, which, given the right conditions, could destroy ozone. Inline movie of TOMS ozone measurements from Nov 1978 to Jan 1992(3.7 Mb) MPEG movie of TOMS ozone measurements from Nov 1978 to Jan 1992(1 Mb) The TOMS instrument measures ozone levels from the back-scattered sunlight, specifically in the ultra-violet range
These unusual reactions can occur only on the surface of polar stratospheric cloud particles, which may be water, ice, or nitric acid, depending on the temperature. From an aircraft field mission over Antarctica we also know that a total column ozone level of less than 220 Dobson Units is a result of catalyzed ozone loss from chlorine and bromine compounds
The Ozone Hole-Ozone Hole History
The 100 hPa temperature over Halley and Vernadsky was below the long term mean for most of the season.Total ozone values fell from an estimated 300 DU in early July to around 200 DU in mid August. These Polar Stratospheric Clouds (PSC's) are composed of ice crystals that provide the surface for a multitude of reactions, many of which speed the degradation of ozone molecules
The fans in this photo, taken from the front page of El Mercurio today, show fans (called hinchas) ripping the plastic seats of the stadium up and throwing them at the riot police. One sports broadcaster on TVN was so disgusted that he said stadiums might have to do what Argentina did which was to prohibit fans from the visiting team from visited the stadium at all
The Ozone Hole
Scientific theory and evidence suggest that, once emitted to the atmosphere, these compounds could significantly deplete the stratospheric ozone layer that shields the planet from damaging UV-B radiation. The Ozone Hole About Us Awards Donate Contact Us Site Map News Links Ozone Hole History Montreal Protocol Ozone Hole 2006 Ozone hole 2014 Arctic Ozone Hole The Ozone Hole For nearly a billion years, ozone molecules in the atmosphere have protected life on Earth from the effects of ultraviolet rays
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