Keyword: ozonehole

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  • Report: Ozone Hole Has Shrunk by More Than Four Million Square Kilometers

    03/28/2017 6:23:38 AM PDT · by Rockitz · 53 replies ^ | 28 Mar 2017 | Thomas D. Williams, Ph.D.
    In the period from 2000-2015, the hole in the ozone layer shrank by more than 4 million square kilometers—nearly a billion acres—according to a new report in the journal Science. During the 1980s and into the 1990s, news of a massive hole in the ozone layer caused worldwide panic, stoked by everything from rumors of sheep being blinded by increased atmospheric radiation to the fear of a skin cancer pandemic and even comparisons to “AIDS from the sky.” Now scientists at MIT along with others have found that since 2000 the ozone hole has actually shrunk by an area half...
  • Nations, Fighting Powerful Refrigerant That Warms Planet, Reach Landmark Deal

    10/14/2016 10:26:17 PM PDT · by justlittleoleme · 48 replies
    NY Times ^ | OCT. 15, 2016 | CORAL DAVENPORT
    Negotiators from more than 170 countries on Saturday reached a legally binding accord to counter climate change by cutting the worldwide use of a powerful planet-warming chemical used in air-conditioners and refrigerators. -snip-While the Paris agreement included pledges by nearly every country to cut emissions of heat-trapping carbon dioxide from the fossil fuels that power vehicles, electric plants and factories, the new Kigali deal has a single target: chemical coolants called hydrofluorocarbons, or HFCs, used in air-conditioners and refrigerators.-snip-And while the Paris pledges are broad, they are also voluntary, often vague and dependent on the political will of future world...
  • Did we really save the Ozone Layer?

    11/02/2015 5:02:13 AM PST · by norwaypinesavage · 23 replies
    Watt's Up With That ^ | October 26, 2015 | Steve Goreham
    Another year has passed and that stubborn Ozone Hole over Antarctica refuses to go away...The Ozone Layer is known to block ultraviolet rays, shielding the surface of Earth from high-energy radiation. Scientists were concerned that degradation of the ozone layer would increase rates of skin cancer and cataracts and cause immune system problems in humans...World consumption of Ozone Depleting Substances has been reduced to zero over the last three decades
  • Antarctic ozone hole at near record size

    10/31/2015 7:20:50 AM PDT · by artichokegrower · 39 replies
    San Francisco Chronicle ^ | October 29, 2015
    The Antarctic ozone hole has swelled this month to one of its biggest sizes on record, U.N. and U.S. scientists say, insisting that the Earth-shielding ozone layer remains on track to long-term recovery but saying residents of the southern hemisphere should be on watch for high UV levels in the weeks ahead.
  • U.N. climate agency says "Don't panic!" as ozone hole gets wider

    10/29/2015 7:07:36 PM PDT · by NormsRevenge · 30 replies
    Reuters on Yahoo News ^ | 10/28/15 | Tom Miles
    ENEVA (Reuters) - The U.N.'s weather and climate agency said on Thursday there was no cause for alarm about a record-size hole this month in the ozone layer, that shields life on earth from the sun, as it should shrink again. The ozone hole that appears over Antarctica fluctuates in size, normally reaching its widest in the polar spring as extreme cold temperatures in the stratosphere and the return of sunlight unleash chlorine radicals that destroy ozone. Last year, the World Meteorological Organization (WMO) said it detected the first sign of ozone recovery, largely thanks to a 1987 ban on...
  • Ozone Hole Won't Heal Until 2070, NASA Finds

    12/14/2013 10:38:19 AM PST · by facedown · 54 replies
    Live Science via Yahoo News ^ | December 12, 2013 | Tia Ghose
    SAN FRANCISCO — The banning of ozone-depleting chemicals hasn't yet caused detectable improvements in the Antarctic ozone hole, new research suggests. Instead, changes in the South Pole's ozone hole from year-to-year are likely the result of natural variations in wind patterns, researchers said here Wednesday (Dec. 11) in a press conference at the annual meeting of the American Geophysical Union. The findings suggest that measuring the total size of the ozone hole says little about ozone depletion, and that it's misleading to use the hole's extent alone to measure environmental progress.
  • Ozone hole above the Arctic has actually been caused by COLD Weather

    01/29/2012 9:09:19 PM PST · by smokingfrog · 22 replies · 1+ views ^ | 20 Jan 2012 | Rob Waugh
    The first ozone hole above the North Pole has been aggravated by extraordinarily cold winter temperatures, say scientists. Cooling of the ozone layer enhances the effect of ozone-destroying substances such as chlorofluorocarbons - CFC. A repeated ozone hole above the Arctic is to be expected, say scientists from the KIT Institute of Meteorology and Climate Research. About a year ago, the scientists detected that ozone degradation above the Arctic for the first time reached an extent comparable to that of the ozone hole above the South Pole. At a level of around 13 miles above the ground, 80 per cent...
  • EPA's Planned Phaseout of Harmful Refrigerant Hits Snag [R-22]

    08/30/2011 7:12:18 AM PDT · by Red Badger · 49 replies
    NY Times ^ | Published: August 18, 2011 | By GABRIEL NELSON of Greenwire
    Eighteen months after the Obama administration came out with new rules to stop refrigerants in air conditioners from thinning the Earth's protective ozone layer, an unexpected quirk has divided the industry and could have implications for the atmosphere. Much of the equipment being installed in American homes is still getting its cooling power from an ozone-depleting gas that was supposed to be phased out, says a group of disgruntled appliance makers, including the makers of Carrier and Trane air conditioners. Five companies wrote a letter (pdf) to EPA Administrator Lisa Jackson this week saying the agency inadvertently left a loophole...
  • Five Decades Of Cooling Ahead

    12/24/2009 3:44:23 PM PST · by raptor22 · 86 replies · 4,041+ views ^ | December 24, 2009 | INVESTOR'S BUSINESS DAILY staff
    Climate Change: A peer-reviewed study by a respected Canadian physicist blames the interplay of cosmic rays and chlorofluorocarbons for 20th-century warming. The CFCs are now gone, and so is warming — perhaps for the next 50 years. Much of the nation got a white Christmas this year, some in unprecedented quantities. A record-breaking storm deposited 12 to 30 inches of snow in Virginia, Maryland and Washington, D.C. Many places set records for the most snow in a single December day as more than 50% of the U.S. was covered by the white stuff. Scientists (and here we use the word...
  • Montreal Protocol and the ozone crisis that wasn't

    07/17/2009 9:51:22 AM PDT · by Entrepreneur · 3 replies · 493+ views
    Critical Opinion ^ | 13 Sep 2007 | Ben Lieberman
    The international treaty to protect the ozone layer turns twenty this year and claims success. But is there really reason to celebrate? Environmentalists have made many apocalyptic predictions over the past decades and, when they have not come to pass, have proclaimed that their preventive measures averted disaster -- as with the 1987 Montreal Protocol On Substances That Deplete The Ozone Layer (Montreal Protocol). The many lurid predictions of skin cancer epidemics, eco-system destruction and so on have not come true, and to Montreal Protocol proponents this is cause for self-congratulation. But in retrospect the evidence shows that ozone depletion...
  • Bidding Adieu to R-22

    07/17/2009 9:16:43 AM PDT · by Entrepreneur · 15 replies · 707+ views
    Contracting Business Magazine ^ | 7/1/2009 | Matt Michel
    In a few months, the last R-22 air conditioner will roll down the assembly line, as the industry completes the Herculean effort to redesign every product, retool every factory, and retrain every technician for the conversion to R-410A. Yet, even now, momentum is building to phase-out R-410A. Dumping R-410A would be even more ridiculous than phasing out R-22. R-22 was served a death sentence with the 1987 Montreal Protocol, created in response to reported thinning of the ozone layer. Urgency was based on the discovery of the Antarctic ozone hole in 1985. We were told drastic action was required to...
  • The Space Shuttle Tragedy's Green Connection

    08/06/2003 9:44:00 AM PDT · by Maria S · 11 replies · 703+ views ^ | August 6, 2003 | Jon Berlau
    The National Aeronautics and Space Administration, better known as NASA, said in July that it had found the "smoking gun" that caused the space shuttle Columbia to break apart as it re-entered the Earth's atmosphere on Feb. 1: a piece of foam that had peeled off the external fuel tank and struck the shuttle's wing 1 minute and 22 seconds after liftoff. But many experts looking at the tragedy that killed seven astronauts say there is a deeper cause. They say that the metaphorical smoking gun should be painted green. Because of demands that the agency help to front for...
  • WMO expects 'normal' ozone hole over Antarctica in 2008

    08/29/2008 2:30:58 PM PDT · by decimon · 2 replies · 151+ views
    AFP ^ | Aug 29, 2008 | Unknown
    The shear face of the massive B-15A iceberg after it broke off the Ross Ice Shelf in Antartica in 2001. The World Meteorological Organisation said Friday it expects the ozone hole over Antarctica to be "normal" this year, two years after it reached record size. (AFP/File/Josh Landis) GENEVA (AFP) - The 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...
  • Ozone hole closing, but may not be good news (More doom and gloom)

    06/17/2008 11:56:51 AM PDT · by PROCON · 49 replies · 128+ views
    oheraldo ^ | June 17, 2008
    PANJIM, JUNE 16 (Agencies) — Manmade chemicals have damaged the ozone layer of the upper atmosphere that shields Earth from the harmful effects of the sun’s ultraviolet rays, each summer creating a hole over the South Pole that expands to nearly the size of Antarctica. But in 1996, an international treaty banned the chemical refrigerants and propellants (known as CFCs, or chlorofluorocarbons), and the hole has been shrinking. Scientists predict it may stop forming by the end of this century. But that’s not necessarily good news. A new study published in ‘Science’ says that the closing of the ozone hole...
  • The Truth About Greenland (Inconvenient Global Warming Truth Alert)

    10/10/2007 7:08:37 PM PDT · by Texas Eagle · 27 replies · 1,310+ views ^ | 10-10-07 | Rush Limbaugh
    BEGIN TRANSCRIPT RUSH: From Houston up first, this is Shannon, and welcome to the EIB Network. Hello. CALLER: Sweet southern mega dittos from a longtime listener, Rush. I've been listening to you since 1989, and I'm really proud to talk to you. RUSH: Thank you very much, sir. CALLER: I wanted to talk to you really quick about the "hole" in the ozone layer theory and manmade global warming and all of that. My dad works for the national scientific balloon facility in Palestine, Texas, and they are the folks that send down the weather balloons to Antarctica and do...
  • NASA and NOAA Announce Antarctic Ozone Hole is a Record Breaker

    10/23/2006 3:16:29 PM PDT · by EBH · 56 replies · 969+ views
    Environmental Resource Center ^ | 10/23/2006 | Staff
    NASA and 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 by human-produced compounds that release chlorine and bromine gases in the stratosphere... "From September 21 to 30, the average area of the ozone hole was the largest ever observed, at 10.6 million square miles," said Paul Newman, atmospheric scientist at NASA's...
  • Antarctic ozone hole nears record: U.N. agency

    09/22/2006 11:02:45 AM PDT · by NormsRevenge · 25 replies · 644+ views
    Reuters on Yahoo ^ | 9/22/06 | Reuters
    GENEVA (Reuters) - The hole over Antarctica's ozone layer is bigger than last year and is nearing the record 29-million-square-km (11-million-sq-mile) hole seen in 2000, the World Meteorological Organization said on Friday. Geir Braathen, the United Nations weather agency's top ozone expert, said ozone depletion had a late onset in this year's southern hemisphere winter, when low temperatures normally trigger chemical reactions that break down the atmospheric layer that filters dangerous solar radiation. "The ozone depletion started quite late, but when it started it came quite rapidly," Braathen told journalists in Geneva. "It (the hole) has now risen to a...
  • NASA Study Finds Clock Ticking Slower On Ozone Hole Recovery

    06/30/2006 7:43:05 AM PDT · by DaveLoneRanger · 45 replies · 763+ views
    NASA ^ | Junen 29, 2006 | Staff
    The Antarctic ozone hole's recovery is running late. According to a new NASA study, the full return of the protective ozone over the South Pole will take nearly 20 years longer than scientists previously expected. Scientists from NASA, the National Oceanic and Atmospheric Administration and the National Center for Atmospheric Research in Boulder, Colo., have developed a new tool, a math-based computer model, to better predict when the ozone hole will recover. The Antarctic ozone hole is a massive loss of ozone high in the atmosphere (the stratosphere) that occurs each spring in the Southern Hemisphere. The ozone hole is...
  • Good News and a Puzzle (NASA and the Ozone Hole)

    05/26/2006 10:43:28 AM PDT · by Hunble · 50 replies · 1,252+ views
    Science@NASA ^ | 05.26.2006 | Patrick L. Barry and Dr. Tony Phillips
    May 26, 2006: Think of the ozone layer as Earth's sunglasses, protecting life on the surface from the harmful glare of the sun's strongest ultraviolet rays, which can cause skin cancer and other maladies. People were understandably alarmed, then, in the 1980s when scientists noticed that manmade chemicals in the atmosphere were destroying this layer. Governments quickly enacted an international treaty, called the Montreal Protocol, to ban ozone-destroying gases such as CFCs then found in aerosol cans and air conditioners. The Antarctic ozone hole. Today, almost 20 years later, reports continue of large ozone holes opening over Antarctica, allowing dangerous...
  • Report: Ozone Hole May Disappear by 2050 (Algore the last to know...)

    05/20/2006 8:13:49 PM PDT · by Libloather · 23 replies · 856+ views
    Yahoo News ^ | 5/20/06
    Report: Ozone Hole May Disappear by 2050Sat May 20, 9:01 AM ET TOKYO - The ozone hole over the Antarctic is likely to begin contracting in the future and may disappear by 2050 because of a reduction in the release of chlorofluorocarbons and other ozone-depleting gases, according to a team of Japanese scientists. The findings are based on a series of numerical simulations carried out by Eiji Akiyoshi of the National Institute for Environmental Studies, near Tokyo, using projected emissions of chlorofluorocarbons and other gases blamed for the ozone hole. According to a report posted Friday on the institute's Web...