Jump to content




Welcome to Unexplained Mysteries! Please sign in or create an account to start posting and to access a host of extra features.


- - - - -

Antarctic Ozone Layer 90 to 99 Percent Gone


  • Please log in to reply
4 replies to this topic

#1    Reincarnated

Reincarnated

    Banned

  • Banned
  • 2,540 posts
  • Joined:11 Apr 2006

Posted 28 December 2006 - 04:19 AM

Antarctic Ozone Layer 90 to 99 Percent Gone
    Agence France-Presse
Tuesday 26 December 2006


    A study released today 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" lo*spam filter*ed ozone depletion in the heart of Antarctica's ozone hole region, beginning in the late 1970s, but becoming more pronounced in the 1980s and '90s.

    The US government scientists who conducted the study said that there was an almost complete absence of ozone in certain atmospheric air samples taken after 1980, compared to earlier decades.

    In contrast, the ozone losses in the Arctic were sporadic, and even the greatest losses did not begin to approach the regular losses in the southern hemisphere, the researchers said.

    "Typically the Arctic loss is dramatically less than the Antarctic loss," said Robert Portmann, an atmospheric scientist with the National Oceanic and Atmospheric Administration in Boulder, Colorado.

    Scientists have been tracking the expanding ozone hole over Antarctica for some 20 years now.

    In October, NASA scientists reported that this year's hole is the biggest ever, stretching over nearly 11 million square miles.

    In Antarctica, local ozone depletion at some altitudes frequently exceeded 90 per cent, and often reached up to 99 per cent during the Antarctic winter in the period after 1980 compared to earlier decades, the researchers said.

    In the Arctic, the losses occasionally peaked at 70 per cent, and some losses of 50 per cent were seen in the mid 1990s, when temperatures were particularly low, but the scale and scope of the problem was much less than what was seen in the Northern Hemisphere.

    Recent studies have also pointed to large ozone losses in the Southern Hemisphere, but the NOAA researchers said their study showed that these events were rare and did not appear to signal a trend.

    "We saw small to moderate ozone losses in the very coldest winters, when the stratospheric conditions are ripe for ozone loss, but they were rarer than we expected," Mr Portman said.

    The study, published in the Proceedings of the National Academy of Sciences, was based on more than 40 years' of ozone readings from polar observation stations and balloon-borne measuring mechanisms.

Source


#2    m. Moe

m. Moe

    UMs Official Fiend

  • Member
  • PipPipPipPipPipPipPipPip
  • 1,730 posts
  • Joined:11 Dec 2006
  • Gender:Male
  • Location:Nowhere....

  • I'm that evil voice in your head that tells you to burn things.

Posted 28 December 2006 - 04:35 AM

At this point, we can no longer just stand around and pretend that everything is okay. no.gif  Some major international action has to taken.

Posted Image
Signature by the_scorpian
"Sweet lovely death, I'm waiting for your breath, come sweet death one last caress"
Congrats, you found my subliminal message. Now pat yourself on the back and stop highlighting my signature

#3    frogfish

frogfish

    ஆங்கிலத்த&

  • Member
  • 11,142 posts
  • Joined:19 Sep 2005
  • Gender:Male
  • Location:The Swamp

  • Flyfishing -- the Art of the Gods



Posted 28 December 2006 - 08:19 PM

The last reputable report I heard, the ozone holes was actually REPAIRING itself...

-Frogfish-
Posted Image
Researcher-Prostate Cancer Oncogene Research
University of Michigan Comprehensive Cancer Center

The National Center for Biotech Information
My Photo Gallery: Capturing India

Fishing is a Way of Life!


#4    The Skeptic Eric Raven

The Skeptic Eric Raven

    Master Blaster

  • Member
  • 11,065 posts
  • Joined:08 Dec 2004
  • Gender:Male
  • Location:Gulf Coast of Mississippi. Missing TX.

  • One day love will find me.....

Posted 28 December 2006 - 08:48 PM

The dang French. disgust.gif

........the sleeper has awoken!
Sometimes we need a kick in the butt to wake us up. Well, I'm up now!Boo ya.


...there are many things in life that will capture your eye, but very few will capture your heart. These are the ones to pursue. These are the ones worth keeping..."

#5    Sun Raven

Sun Raven

    Alpha & Omega

  • Member
  • PipPipPipPipPipPipPipPip
  • 1,637 posts
  • Joined:05 Sep 2006
  • Gender:Male
  • Location:Spain

  • I am the master of my fate.
    I am the captain of my soul

Posted 28 December 2006 - 10:53 PM

Quote

The last reputable report I heard, the ozone holes was actually REPAIRING itself...


Yeah that's what I heard. dontgetit.gif

Posted Image

Sun Raven





1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users