Tom Wagner of NASA “…the Arctic has shifted in State.”

July 26, 2012

6 Responses to “Tom Wagner of NASA “…the Arctic has shifted in State.””

  1. […] To make sure it always has a secure power supply (and to save taxpayers money) one California prison is working to become entirely energy independent.  […]

  2. rayduray Says:

    Reuters YouTube channel provides a window into how the mainstream is starting to think in a rather incoherent fashion that we are living in a world with a climate that is changing dramatically:

    When Reuters starts to advocate prosecuting the Heartland Institute and Watts Up With That for fraud, then I’ll begin to consider Reuters a credible source.

  3. NevenA Says:

    Wow, he’s really good! Thanks for this vid, Peter! I’ve posted it on the ASI blog.

  4. prokaryotes Says:

    The amplifying feedback mechanism of polar ice melt is the so-called albedo-flip effect, where loss of reflection by melted ice is compounded by infrared absorption by open water, a process currently taking place in the Arctic Sea, as reported by Hansen et al.: “… amplifying feedbacks make ice sheet disintegration necessarily highly non-linear. In a non-linear problem, the most relevant number for projecting sea level rise is the doubling time for the rate of mass loss. Hansen (2007) suggested that a 10-year doubling time was plausible, pointing out that such a doubling time from a base of 1 mm per year ice sheet contribution to sea level in the decade 2005-2015 would lead to a cumulative 5 m sea level rise by 2095.”

    “Just the melting of all the floating ice in the arctic ocean, will add as much heat to the earth, as all the Co-2 we put in the atmosphere to date.” Prof. James Lovelock

    Estimating the Global Radiative Impact of the Sea-Ice-Albedo Feedback in the Arctic a more realistic ice-free-summer scenario (no ice for one month, decreased ice at all other times of the year) results in a forcing of about 0.3 W m−2, similar to present-day anthropogenic forcing caused by halocarbons.

    • (On a side note) You should also remember that sea ice and icebergs add about 2 to 3% more water when they melt. Melt water (fresh or fresher water) is less density that why it floats and displaces its weight (Archimedes). Once the ice melt however it now displaces its volume which is higher. So if the iceberg displaces about 100,000 gallons of sea water it will then add about 2,000 gallons once it has melted. Most people are confused about Archimedes’ Principle. It doesn’t deal with state changes at all. Best way to visualize this is to think about 10 gallons being displaced by CO2 ice (dry ice) once it melts (sublimates) it subtracts the 10 gallons that was displace and it is now zero.

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