Global sea ice

Discussion in 'Environment' started by Old Rocks, May 8, 2011.

  1. Old Rocks
    Offline

    Old Rocks Diamond Member

    Joined:
    Oct 31, 2008
    Messages:
    46,622
    Thanks Received:
    5,430
    Trophy Points:
    1,840
    Location:
    Portland, Ore.
    Ratings:
    +10,418
    Ice sheets in Greenland are melting faster than ever before, according to new research.

    The study, led by Marco Tedesco, director of the Cryospheric Processes laboratory at the City College of New York, showed that the melting index had broken the previous record, set in 2007.

    Enlarge Close
    (Photo: CCNY / Marco Tedesco)
    The figure shows the standardized melting index anomaly for the period 1979 - 2010. The center line is the mean fro 1979-2009. Related Articles


    "Melting in 2010 started exceptionally early at the end of April and ended quite late in mid- September," Tedesco said in a statement. "This past melt season was exceptional, with melting in some areas stretching up to 50 days longer than average."

    A melting Greenland ice sheet contributes to sea level rise, which has occurred at a mean rate of about 1.8 millimeters per year over the past century. If the Greenland ice sheet were to melt completely it would raise sea levels by 7 meters. But that is unlikely to happen for several centuries at least.

    One reason for the record-breaking melt was that summer temperatures in the Arctic were 2-3 degrees C (5.4 degrees F) warmer than normal. Greenland's capital, Nuuk, experienced temperatures higher than any since 1873, when weather records started being been kept there. NASA data showed that 2010 was tied with 2005 as, globally, the warmest year on record.


    Combined with reduced snowfall, the bare ice was more exposed to the sun, causing more of it to melt and faster. Other factors that influence ice melt are soot left on the surface, which absorbs heat, and the lakes that form on the surface, which also warm the ice because they are darker.

    The data was gathered from satellites operated by the National Oceanic and Atmospheric Administration. By measuring the amount of microwave radiation emitted by the ice, snow and water of the ice sheets in Greenland, and comparing that with data gathered on the ground, the researchers were able to measure how much of the ice sheet is subject to melting.



    Read more: Greenland Ice Sheets Melt At Record Rate In 2010 - International Business Times
     
    • Thank You! Thank You! x 1
  2. Mr. H.
    Offline

    Mr. H. Diamond Member

    Joined:
    Aug 19, 2009
    Messages:
    44,127
    Thanks Received:
    9,267
    Trophy Points:
    2,030
    Location:
    A warm place with no memory.
    Ratings:
    +15,419
    Nuuk!

    [​IMG]
     
    • Thank You! Thank You! x 1
  3. skookerasbil
    Online

    skookerasbil Gold Member

    Joined:
    Aug 6, 2009
    Messages:
    24,287
    Thanks Received:
    2,922
    Trophy Points:
    290
    Location:
    Not the middle of nowhere
    Ratings:
    +6,270
    Yeah but the Antarctic ice is stupid expanding s0n.................so.................






    :blowup::blowup::blowup::blowup::blowup::blowup::blowup::blowup:
     
  4. Mr. H.
    Offline

    Mr. H. Diamond Member

    Joined:
    Aug 19, 2009
    Messages:
    44,127
    Thanks Received:
    9,267
    Trophy Points:
    2,030
    Location:
    A warm place with no memory.
    Ratings:
    +15,419
    Looks like you got a non-conformist in your ranks.
     
  5. Mr Liberty
    Offline

    Mr Liberty Hater of Socialism

    Joined:
    Mar 26, 2011
    Messages:
    391
    Thanks Received:
    62
    Trophy Points:
    88
    Location:
    In a great country that has lost it's way
    Ratings:
    +62
    Are they farming there yet? They were about one thousand years ago. If it gets warmer than it was during the MWP, then I might think there is a problem. Until then, let's focus on solving real problems.
     
  6. percysunshine
    Offline

    percysunshine Gold Member

    Joined:
    Feb 5, 2011
    Messages:
    16,782
    Thanks Received:
    2,266
    Trophy Points:
    280
    Location:
    Sty
    Ratings:
    +5,930
    Want to know a funny coincidence? The entire Anasazi Indian civilization evaporated at exactly the same time as the ice pushed people off Greenland.

    I think they drove too many SUVs.
     
  7. CrusaderFrank
    Offline

    CrusaderFrank Diamond Member

    Joined:
    May 20, 2009
    Messages:
    81,277
    Thanks Received:
    14,924
    Trophy Points:
    2,210
    Ratings:
    +37,089
    Instead of showing us in a lab how a 200PPM increase in CO2 raises temperature, we get these knuckle dragging articles from OR

    Yeah, that science is settled
     
    Last edited: May 8, 2011
  8. skookerasbil
    Online

    skookerasbil Gold Member

    Joined:
    Aug 6, 2009
    Messages:
    24,287
    Thanks Received:
    2,922
    Trophy Points:
    290
    Location:
    Not the middle of nowhere
    Ratings:
    +6,270

    Hey Mr...........welcome aboard. This forum is a hoot bro..........we steamroll the k00ks on a daily basis and they come back..............daily!!!:D:D:D I love this place......its like going to Vegas knowing you're going home a big winner!!
     
    • Thank You! Thank You! x 1
  9. Old Rocks
    Offline

    Old Rocks Diamond Member

    Joined:
    Oct 31, 2008
    Messages:
    46,622
    Thanks Received:
    5,430
    Trophy Points:
    1,840
    Location:
    Portland, Ore.
    Ratings:
    +10,418
    And we should believe a adolescent message board troll rather than NASA?


    NASA - Is Antarctica Melting?

    Antarctica Melting?01.12.10 The continent of Antarctica has been losing more than 100 cubic kilometers (24 cubic miles) of ice per year since 2002.
    Larger Image

    There has been lots of talk lately about Antarctica and whether or not the continent's giant ice sheet is melting. One new paper 1, which states there’s less surface melting recently than in past years, has been cited as "proof" that there’s no global warming. Other evidence that the amount of sea ice around Antarctica seems to be increasing slightly 2-4 is being used in the same way. But both of these data points are misleading. Gravity data collected from space using NASA's Grace satellite show that Antarctica has been losing more than a hundred cubic kilometers (24 cubic miles) of ice each year since 2002. The latest data reveal that Antarctica is losing ice at an accelerating rate, too. How is it possible for surface melting to decrease, but for the continent to lose mass anyway? The answer boils down to the fact that ice can flow without melting.

    The Antarctic ice sheet. East Antarctica is much higher in elevation than West Antarctica.
    Larger Image

    Two-thirds of Antarctica is a high, cold desert. Known as East Antarctica, this section has an average altitude of about 2 kilometer (1.2 miles), higher than the American Colorado Plateau. There is a continent about the size of Australia underneath all this ice; the ice sheet sitting on top averages at a little over 2 kilometer (1.2 miles) thick. If all of this ice melted, it would raise global sea level by about 60 meter (197 feet). But little, if any, surface warming is occurring over East Antarctica. Radar and laser-based satellite data show a little mass loss at the edges of East Antarctica, which is being partly offset by accumulation of snow in the interior, although a very recent result from the NASA/German Aerospace Center's Gravity Recovery and Climate Experiment (Grace) suggests that since 2006 there has been more ice loss from East Antarctica than previously thought 5. Overall, not much is going on in East Antarctica -- yet.
     
  10. skookerasbil
    Online

    skookerasbil Gold Member

    Joined:
    Aug 6, 2009
    Messages:
    24,287
    Thanks Received:
    2,922
    Trophy Points:
    290
    Location:
    Not the middle of nowhere
    Ratings:
    +6,270

    LMAO........more date manipulation by the IPCC..........this time related to artic ice expansion............

    World Climate Report » Another IPCC Error: Antarctic Sea Ice Increase Underestimated by 50%
     

Share This Page

Search tags for this page

middle schoolers naked