Longevity of Anthropogenic CO2

Discussion in 'Environment' started by Old Rocks, Apr 13, 2011.

  1. Old Rocks
    Offline

    Old Rocks Diamond Member

    Joined:
    Oct 31, 2008
    Messages:
    46,474
    Thanks Received:
    5,416
    Trophy Points:
    1,840
    Location:
    Portland, Ore.
    Ratings:
    +10,318
    Looks like part of our CO2 addition to the atmosphere may outlast us as a species.

    http://geosci.uchicago.edu/~archer/reprints/archer.2008.tail_implications.pdf

    The millennial atmospheric lifetime
    of anthropogenic CO2
    David Archer & Victor Brovkin
    Received: 19 December 2006 / Published online: 4 June 2008
    # The Author(s) 2008
    Abstract The notion is pervasive in the climate science community and in the public at
    large that the climate impacts of fossil fuel CO2 release will only persist for a few centuries.
    This conclusion has no basis in theory or models of the atmosphere/ocean carbon cycle,
    which we review here. The largest fraction of the CO2 recovery will take place on time
    scales of centuries, as CO2 invades the ocean, but a significant fraction of the fossil fuel
    CO2, ranging in published models in the literature from 20–60%, remains airborne for a
    thousand years or longer. Ultimate recovery takes place on time scales of hundreds of
    thousands of years, a geologic longevity typically associated in public perceptions with
    nuclear waste. The glacial/interglacial climate cycles demonstrate that ice sheets and sea
    level respond dramatically to millennial-timescale changes in climate forcing. There are
    also potential positive feedbacks in the carbon cycle, including methane hydrates in the
    ocean, and peat frozen in permafrost, that are most sensitive to the long tail of the fossil fuel
    CO2 in the atmosphere.

    David Archer of the University of Chicago and Victor Brovkin of the Max Planck Institute for Meteorology
     
  2. Midnight Marauder
    Offline

    Midnight Marauder BANNED

    Joined:
    Feb 28, 2009
    Messages:
    12,404
    Thanks Received:
    1,876
    Trophy Points:
    0
    Ratings:
    +1,876
    CO2 is CO2, right?

    Or is CO2 from burning fossil fuels a premium brand?

    What a bunch of crap.

    Make the boogeyman MOAR scary! :lmao:
     
    • Thank You! Thank You! x 1
  3. wirebender
    Offline

    wirebender Senior Member

    Joined:
    Mar 31, 2011
    Messages:
    1,723
    Thanks Received:
    120
    Trophy Points:
    48
    Location:
    NC
    Ratings:
    +120
    Gullible is the first word that comes to my mind when I read your posts. You are one of those who will accept and repeat anything so long as it supports your position without regard, no, without even wondering if it may be true. Your abstract states pretty clearly that the data is from models and we all (even you) know that the models are steaming piles of horse puckey. If you would like a scorecard listing the various models and the accuracy of their predictions, I will be happy to provide one for you.

    There have been numerous studies performed over the years examining the residence time of CO2 in the atmosphere. The guys you reference clearly have taken only one to heart. Here is a graph showing the various studies (feel free to look them up) and their findings. Does the IPCC graph strike you as odd when compared to the rest?

    [​IMG]

    I would recommend that you take some time to actually learn the facts before you repeat the pronouncements of your priests, but I know it would do no good; so you just keep pitching them and a skeptic will always be there with some facts to knock them out of the park.
     
    • Thank You! Thank You! x 1
    Last edited: Apr 14, 2011
  4. wirebender
    Offline

    wirebender Senior Member

    Joined:
    Mar 31, 2011
    Messages:
    1,723
    Thanks Received:
    120
    Trophy Points:
    48
    Location:
    NC
    Ratings:
    +120
    Note that the study is looking at models, not observed data. We all know how good the models are, don't we?
     
    • Thank You! Thank You! x 1
  5. del
    Offline

    del BANNED

    Joined:
    Sep 3, 2008
    Messages:
    45,052
    Thanks Received:
    9,830
    Trophy Points:
    0
    Ratings:
    +9,885
    you really are a moron.

    :lol:

    does anthropogenic CO2 come with little wings or paragliders that plain old CO2 doesn't have?

    fuckwit
     
    • Thank You! Thank You! x 1
  6. DiamondDave
    Offline

    DiamondDave Army Vet

    Joined:
    Jun 30, 2008
    Messages:
    18,169
    Thanks Received:
    2,812
    Trophy Points:
    183
    Location:
    MD, on the Potomac River
    Ratings:
    +2,816
    This is so damn laughable... I think I sprayed half my coffee on the screen
     
    • Thank You! Thank You! x 1
  7. wirebender
    Offline

    wirebender Senior Member

    Joined:
    Mar 31, 2011
    Messages:
    1,723
    Thanks Received:
    120
    Trophy Points:
    48
    Location:
    NC
    Ratings:
    +120
    Anthropogenic CO2 molecules wear T shirts. Perhaps from the Hard Rock Cafe.
     
    • Thank You! Thank You! x 1
  8. Old Rocks
    Offline

    Old Rocks Diamond Member

    Joined:
    Oct 31, 2008
    Messages:
    46,474
    Thanks Received:
    5,416
    Trophy Points:
    1,840
    Location:
    Portland, Ore.
    Ratings:
    +10,318
    Practicing being stupid? You really don't need the practice. CO2 from any source will last the same amount of time. However, at present, we are the primary source. That could change as the feedbacks melt the permafrost and the Arctic Ocean clathrates kick in.
     
  9. Old Rocks
    Offline

    Old Rocks Diamond Member

    Joined:
    Oct 31, 2008
    Messages:
    46,474
    Thanks Received:
    5,416
    Trophy Points:
    1,840
    Location:
    Portland, Ore.
    Ratings:
    +10,318
    Link to source?
     
  10. Old Rocks
    Offline

    Old Rocks Diamond Member

    Joined:
    Oct 31, 2008
    Messages:
    46,474
    Thanks Received:
    5,416
    Trophy Points:
    1,840
    Location:
    Portland, Ore.
    Ratings:
    +10,318

Share This Page

Search tags for this page

david archer chicago co2 persist