 |
 |
 |
 |
 |
 |
 |
 |
 |
|
|
|
Ozone Layer Depletion Levelling Off Paris, France (ESA) Sep 22, 2009 
By merging more than a decade of atmospheric data from European satellites, scientists have compiled a homogeneous long-term ozone record that allows them to monitor total ozone trends on a global scale - and the findings look promising. Scientists merged monthly total ozone data derived from the vertically downward-looking measurements of the GOME instrument on ESA's ERS-2 satellite ... read moreNASA Satellite Data Show Progress Of 2009 Antarctic Ozone Hole 
Greenbelt MD (SPX) Sep 18, 2009The annual ozone hole has started developing over the South Pole, and it appears that it will be comparable to ozone depletions over the past decade. This composite image from September 10 depicts ozone concentrations in Dobson units, with purple and blues depicting severe deficits of ozone. "We have observed the ozone hole again in 2009, and it appears to be pretty average so far," said ... more
|
|
 | |||||||||
|
Ozone hole smaller in 2009 than 2008: WMO
Geneva (AFP) Sept 16, 2009 The World Meteorological Organisation said Wednesday that the ozone hole is expected to be smaller in 2009 than a year ago. "The meteorological conditions observed so far could indicate that the 2009 ozone hole will be smaller than those of 2006 and 2008 and close to that of 2007," said the UN agency in a statement. The hole in the layer over the Antarctic was discovered in the 1980s. It ... more Ozone: Climate change boosts ultraviolet risk for high latitudes 
Paris (AFP) Sept 6, 2009Climate change will disrupt Earth's precious ozone layer, boosting ultraviolet (UV) radiation in the deep southern hemisphere and reducing UV in far northern latitudes, a study warned on Sunday. By century's end, UV levels in Antarctica could rise by up to 20 percent at seasonal peaks while average exposure in northern Scandinavia, Siberia and northern Canada could fall by almost a tenth. ... more Nitrous oxide is top destroyer of ozone layer: study 
Washington (AFP) Aug 31, 2009Nitrous oxide emissions caused by human activity have become the largest contributor to ozone depletion and are likely to remain so for the rest of the 21st century, a US study has concluded. The study by the National Oceanographic and Atmospheric Agency said efforts to reduce chlorofluorocarbons (CFCs) in the atmosphere over the past two decades were "an environmental success story. ... more Climate Change And Atmospheric Circulation Will Make For Uneven Ozone Recovery 
Greenbelt MD (SPX) Apr 14, 2009Earth's ozone layer should eventually recover from the unintended destruction brought on by the use of chlorofluorocarbons (CFCs) and similar ozone-depleting chemicals in the 20th century. But new research by NASA scientists suggests the ozone layer of the future is unlikely to look much like the past because greenhouse gases are changing the dynamics of the atmosphere. Previous studies ha ... more |
. |
    |
. |
|
. |
Ozone hole larger in 2008 than previous year: WMO
Geneva (AFP) Sept 16, 2008The ozone hole is larger in 2008 than the previous year but is not expected to reach the size seen two years ago, the World Meteorological Organisation said Tuesday. "In 2008, the ozone hole appeared relatively late. However, during the last couple of weeks it has grown rapidly and has now passed the maximum size attained in 2007," the WMO said in a statement. The hole in the layer over ... more WMO expects 'normal' ozone hole over Antarctica in 2008 
Geneva (AFP) Aug 29, 2008The World Meteorological Organisation said Friday it expects the ozone hole over Antarctica to be "normal" this year, two years after it reached record size. "Looking at the preliminary data so far, it looks as if the Antarctica ozone hole of 2008 in size and severity will be something in-between the record 2006 and the much weaker one in 2007," WMO ozone expert Geir Braathen told journalist ... more Ozone-Friendly Replacement Gases Will Be Disastrous For Global Warming 
London, UK (SPX) Jul 11, 2008The recent decision to accelerate the phase-out of hydrochlorofluorocarbons (HCFCs) - air conditioning and refrigeration gases will in fact, vastly undermine efforts to reduce global warming if proper precautions are not taken, the Environmental Investigation Agency (EIA) has warned. As parties meet this week in Bangkok under the Montreal Protocol to discuss ways to reduce demand for HCFCs ... more Computer Models Show Major Climate Shift As A Result Of Closing Ozone Hole
New York NY (SPX) Jun 17, 2008A new study led by Columbia University researchers has found that the closing of the ozone hole, which is projected to occur sometime in the second half of the 21st century, may significantly affect climate change in the Southern Hemisphere, and therefore, the global climate. The Earth's ozone layer is located in the lower stratosphere, which lies just above the troposphere (which begins a ... more |
. |
   |
. |
 |
. |
|
|
|
| The contents herein, unless otherwise known to be public domain, are Copyright 1995-2009 - SpaceDaily. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by SpaceDaily on any web page published or hosted by SpaceDaily. Privacy statement |
