400ppm

Discussion in 'Environment' started by Trakar, May 26, 2013.

  1. Trakar
    Offline

    Trakar VIP Member

    Joined:
    Feb 28, 2011
    Messages:
    1,699
    Thanks Received:
    73
    Trophy Points:
    83
    Ratings:
    +73
    http://www.sciencewa.net.au/topics/environment-a-conservation/item/2162-new-model-shows-responsive-plant-species-to-climate-change.html
    Interesting new science understanding demonstrates some of the problems inherent to rapid changes of climate.
    Of particular interest is that this study does more than just identify the problems of previous studies and examinations of the issue, it also examines some of the potential and proposed addressments to the problem of fragmented ecosystems in a rapidly changing climate backdrop.
    Reference:
    “Plant migration and persistence under climate change in fragmented landscapes: Does it depend on the key point of vulnerability within the lifecycle?” - http://www.sciencedirect.com/science/article/pii/S0304380012003304
     
  2. Trakar
    Offline

    Trakar VIP Member

    Joined:
    Feb 28, 2011
    Messages:
    1,699
    Thanks Received:
    73
    Trophy Points:
    83
    Ratings:
    +73
    Guy Stewart Callendar
    75 years ago April, Guy Stewart Callendar had a landmark paper published in the Quarterly Journal of the Royal Meteorological Society, entitled “The artificial production of carbon dioxide and its influence on temperature.” This led to the phenomenon of planetary climate warming due primarily to the addition of CO2 being called “the Callendar Effect” through the 1940s and ‘50s. For the last couple of decades, it has generally been labeled AGW or HFCC (Human Forced Climate Change). In April of this year, Drs. Hawkins and Jones, were published in the same journal with a paper examining and assessing Callendar’s original paper, how it compares to modern Climate science understandings, and the impact all of the early foundational climate science work has had upon modern climate theory:

    Nice little paper, easy to read, with references to many of the foundational papers of modern Climate science.
    http://www.met.reading.ac.uk/~ed/home/hawkins_jones_2013_Callendar.pdf
     
  3. Trakar
    Offline

    Trakar VIP Member

    Joined:
    Feb 28, 2011
    Messages:
    1,699
    Thanks Received:
    73
    Trophy Points:
    83
    Ratings:
    +73
    Four Hundred Parts per Million
    Suppose that all increases in atmospheric CO2 could be stopped so that the current levels could not increase above where they are at right now. What would the world look like after a couple hundred years and the natural environment had fully equilibrated to the 400ppm of CO2 level of atmospheric CO2?
    Luckily we aren’t solely reliant upon the speculations of amateur and professional speculators, there are a few rare confluences of geological conditions that have preserved snap-shots of the Earth’s past where naturally released pCO2 levels matched today’s.

    Oceans 30-40 meters higher than they are currently, temps averaged 6-12°C higher than current (depending on latitude), sounds pretty rough, what’s worse though, is the fact that we don’t have a magic wand to stop CO2 levels at their current rate and we are very likely to top 6-800ppm CO2 over the next century.
    Reference: Science Magazine: Sign In
     
  4. CrusaderFrank
    Offline

    CrusaderFrank Diamond Member

    Joined:
    May 20, 2009
    Messages:
    86,004
    Thanks Received:
    15,785
    Trophy Points:
    2,210
    Ratings:
    +44,223
    AGW...still not science

    Sent from my DROID RAZR using Tapatalk 2
     
  5. Old Rocks
    Offline

    Old Rocks Diamond Member

    Joined:
    Oct 31, 2008
    Messages:
    51,584
    Thanks Received:
    6,130
    Trophy Points:
    1,840
    Location:
    Portland, Ore.
    Ratings:
    +13,472
    And that is not factoring in the CH4. In the short term, a decade, CH4 is 60 to 100 times as effective a GHG as CO2.

    Several studies have noted that most of the present heat is going into the oceans. We have found clathrates off both coasts, and then there are the very shallow arctic ocean clathrates, which have already been observed creating kilometer wide boils, venting CH4 directly to the atmosphere.

    And as the amount of CH4 in the atmosphere increases, the amount of hydroxyl decreases, and the residence time of CH4 increases.

    At present, we do not really know where the tripping point is at. But if we start seeing massive outgassing of clathrates, we will know then.
     
  6. westwall
    Offline

    westwall USMB Mod Staff Member Gold Supporting Member Supporting Member

    Joined:
    Apr 21, 2010
    Messages:
    45,978
    Thanks Received:
    9,322
    Trophy Points:
    2,030
    Location:
    Nevada
    Ratings:
    +26,573
    Who cares. The levels have been higher before and will be higher again...and no catastrophe will occur.
     
  7. westwall
    Offline

    westwall USMB Mod Staff Member Gold Supporting Member Supporting Member

    Joined:
    Apr 21, 2010
    Messages:
    45,978
    Thanks Received:
    9,322
    Trophy Points:
    2,030
    Location:
    Nevada
    Ratings:
    +26,573
    "The MoS has campaigned tirelessly against the folly of Britain’s eco-obsessed energy policy. Now comes a game-changing intervention... from an expert respected by the green fanatics themselves

    Last week, I was part of a group of academics who published a paper saying that the faster, more alarming, projections of the rate at which the globe is warming look less likely than previously thought.


    That may mean we can afford to reduce carbon dioxide emissions slightly slower than some previously feared – but as almost everyone agrees, they still have to come down.


    So the time has come to focus on something just as important: that 90 per cent of the measures adopted in Britain and elsewhere since the 1997 Kyoto agreement to cut global emissions are a waste of time and money – including windfarms in Scotland, carbon taxes and Byzantine carbon trading systems."


    Read more: Why I think we're wasting billions on global warming, by top British climate scientist | Mail Online
    Follow us: @MailOnline on Twitter | DailyMail on Facebook
     
  8. Trakar
    Offline

    Trakar VIP Member

    Joined:
    Feb 28, 2011
    Messages:
    1,699
    Thanks Received:
    73
    Trophy Points:
    83
    Ratings:
    +73
    The Keeling Curve | What Does 400 ppm Look Like?

    How about 1000ppm:

    Science 14 January 2011:
    Vol. 331 no. 6014 pp. 158-159

    DOI: 10.1126/science.1199380
    Climate Change

    Lessons from Earth's Past

    Jeffrey Kiehl

     
  9. skookerasbil
    Offline

    skookerasbil Gold Member

    Joined:
    Aug 6, 2009
    Messages:
    26,194
    Thanks Received:
    3,144
    Trophy Points:
    290
    Location:
    Not the middle of nowhere
    Ratings:
    +7,818
  10. skookerasbil
    Offline

    skookerasbil Gold Member

    Joined:
    Aug 6, 2009
    Messages:
    26,194
    Thanks Received:
    3,144
    Trophy Points:
    290
    Location:
    Not the middle of nowhere
    Ratings:
    +7,818
    And anyway..........

    [ame=http://www.youtube.com/watch?v=NBO2IstMi2A]CO2 is a trace gas. - YouTube[/ame]



    I laugh my ass off every time I post this gem up!!!:coffee:
     

Share This Page