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| May 09, 2008 |
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Ozone Hole Recovery May Reshape Southern Hemisphere Climate Change Boulder CO (SPX) Apr 29, 2008 
A full recovery of the stratospheric ozone hole could modify climate change in the Southern Hemisphere and even amplify Antarctic warming, according to scientists from the University of Colorado at Boulder, the National Oceanic and Atmospheric Administration and NASA. While Earth's average surface temperatures have been increasing, the interior of Antarctica has exhibited a unique cooling ... read more |
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CFC smuggling key challenge in Asia, study says
Singapore (AFP) April 23, 2008Smuggling of ozone-depleting chemicals in the Asia-Pacific region is much worse than expected, a study released at a UN-backed environment conference said Wednesday. The study analysed the trade of chlorofluorocarbons (CFCs), which are controlled under an international treaty, and discovered wide discrepancies in export and import figures between trading countries. "If you compare figure ... more Stratospheric Ozone Chemistry Plays An Important Role For Atmospheric Airflow Patterns 
Bremerhaven, Germany (SPX) Mar 10, 2008Interactions between the stratospheric ozone chemistry and atmospheric air flow lead to significant changes of airflow patterns from the ground up to the stratosphere. This is the result of climate simulations, which have just been published in the journal "Geophysical Research Letters". Scientists at the Research Unit Potsdam of the Alfred Wegener Instite ... more Western-Led Research Studies Ozone, Good And Bad 
London, Canada (SPX) Nov 09, 2007Depending on its altitude, ozone can be either friend or foe. Thanks to new research led by The University of Western Ontario, scientists will now have a better understanding of ozone, its origin and the role - good or bad - it plays in polluting our atmosphere. Ozone is a colourless, toxic gas named for the Greek word for smell because of its pungent odour. In the stratosphere, acting as ... more Initial Measurements From GOME-2 Show No Substantial Recovery In The Ozone Hole 
Darmstadt, Germany (SPX) Oct 11, 2007Every year in the southern hemisphere spring, a considerable chemical reduction in ozone is observed in the lower and middle stratosphere, which extends from 10 to 15 kilometres high. The term "ozone hole" was coined to describe this phenomenon. Its expansion shows strong annual progression. Its size has varied considerably over the years, but the ozone layer shows no signs of overall recovery. ... more 2007 Ozone Hole Smaller Than Usual 
Paris, France (ESA) Oct 04, 2007The ozone hole over Antarctica has shrunk 30 percent as compared to last year's record size. According to measurements made by ESA's Envisat satellite, this year's ozone loss peaked at 27.7 million tonnes, compared to the 2006 record ozone loss of 40 million tonnes. Ozone loss is derived by measuring the area and the depth of the ozone hole. The area of this year's ozone hole - where the o ... more |
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Moscow (UPI) Sep 18, 2007 Having signed the Montreal Protocol 20 years ago, on Sept. 16, 1987, the world agreed to renounce the industrial use of substances depleting the ozone layer. Like many other countries, Russia has honored its commitments under this protocol. But has it all been worth it? In the 1980s, scientists startled the world with the discovery that the ozone layer was being depleted, which ... more Cash for China key to fast ban on ozone-depleting chemicals
Montreal (AFP) Sept 17, 2007An accelerated ban on ozone-depleting chemicals is within reach, but China's holdout for financial aid to meet the new timetable could scuttle a deal, officials at a UN conference said Monday. "We have essentially a commitment in principle to continue the multilateral funding ... We have agreement on the timeline," said Achim Steiner, executive director of the United Nations Environment ... more NASA Keeps Eye On Ozone Layer Amid Montreal Protocol's Success 
Washington DC (SPX) Sep 14, 2007NASA scientists will join researchers from around the world to celebrate the 20th anniversary of the Montreal Protocol, an international treaty designed to reduce the hole in Earth's protective ozone layer. The United Nations Environment Programme will host the meeting from Sept. 23 to 26 in Athens, Greece. NASA scientists study climate change and research the timing of the recovery of the ... more Ozone hole reappears over Antarctic: WMO 
Geneva (AFP) Sept 12, 2007The hole in the protective ozone layer over the Antarctic is forming again but should remain just below the record size it reached last year, a scientist at the UN's weather agency said Wednesday. The gap in the ozone in the upper atmosphere, at altitudes of up to 25 kilometres (15 miles), has reached a size of about 23 million square kilometres (8.9 million square miles), said World ... more NASA Ozone Instrument TOMS Laid To Rest After Three Decades 
Greenbelt MA (SPX) Aug 20, 2007During its almost 30-year lifespan, the Total Ozone Mapping Spectrometer (TOMS) program provided unique and valuable information that shaped public policy and international perspectives on the environment. The instrument was important because its data established the geographical extent of the "ozone hole" over the Antarctic, and monitored its year-to-year evolution. With the recent decomm ... more |
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Chicago (AFP) Dec 25, 2006A study released Monday shows just how dramatic the ozone loss in the Antarctic has been over the past 20 years compared to the same phenomenon in the Arctic. The study found "massive" and "widespread" localized ozone depletion in the heart of Antartica's ozone hole region, beginning in the late 1970s, but becoming more pronounced in the 1980s and 90s. The US government scientists who cond ... more NASA Tropical Ozone Studies Yield Surprises 
Pasadena CA (SPX) Dec 15, 2006Two new NASA-funded studies of ozone in the tropics using NASA satellite data not previously available are giving scientists a fuller understanding of the processes driving ozone chemistry and its impacts on pollution and climate change. Ozone pollution caused by burning of fossil fuels is a major health concern in Earth's Northern Hemisphere mid latitudes, including the United States. But ... more NASA And NOAA Announce Ozone Hole Is A Double Record Breaker
Washington DC (SPX) Oct 20, 2006NASA and National Oceanic and Atmospheric Administration (NOAA) scientists report this year's ozone hole in the polar region of the Southern Hemisphere has broken records for area and depth. The ozone layer acts to protect life on Earth by blocking harmful ultraviolet rays from the sun. The "ozone hole" is a severe depletion of the ozone layer high above Antarctica. It is primarily caused ... more Canadian SCISAT Satellite Explains 2006 Ozone-Layer Depletion 
Longueuil QC (SPX) Oct 09, 2006A surprising new study finds that high-speed winds above the northern hemisphere have a much greater impact on ozone levels than was previously thought. Scientists used data collected in 2006 by Canada's SCISAT. This satellite was launched in 2003 by the Canadian Space Agency to observe chemical processes in the ozone layer, 8 km to 50 km above the Earth's surface. The study showed that re ... more Record Ozone Loss During 2006 Over South Pole 
Paris, France (ESA) Oct 03, 2006Ozone measurements made by ESA's Envisat satellite have revealed the ozone loss of 40 million tonnes on 2 October 2006 has exceeded the record ozone loss of about 39 million tonnes for 2000. Ozone loss is derived by measuring the area and the depth of the ozone hole. The size of this year's ozone hole is 28 million square km, nearly as large as the record ozone hole extension during 2000, and th ... more
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