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An ice-free Arctic in 10 years?

In today’s version of global warming fear-mongering, Senator John Kerry (D-Massachusetts) declared that the Arctic will be ice-free in “five or 10 years.” He apparently based this statement on a 2009 Geophysical Research Letters paper [pdf] that, using computer models, predicted an ice-free Arctic in September could occur as soon as the late 2020s but was more likely in the late 2030s.

Wanna bet? Since that 2009 paper was published, Arctic ice has seen a rebound in ice extent. Moreover, the Arctic oscillation remains in the deepest freeze it has seen in years. And the sun remains quiet, less active than we have seen it since scientists began tracking its behavior from space. Such inactivity means a dimmer sun, which in turn brings with it cold temperatures. Here is the most recent graph (updated on July 20) from the Total Solar Irradiance Time Series produced by Physikalisch- Meteorologisches Observatorium Davos (PMOD) using satellite data since 1978:

PMOD graph, July 20, 2010

Even though the sun’s total irradiance has shown an up-tick recently as it slowly moves from solar minimum towards solar maximum, if you look closely you will see this up-tick still remains below the lowest points for the previous three solar minimums. And as I have noted here, we appear to be heading for the weakest solar maximum in two centuries.

Of course (as stock brokers say), the past performance of all of these trends is no guarantee of the future performance. Nonetheless, the data indicates clearly the simplistic nature of statements like Kerry’s.

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Conscious Choice cover

Now available in hardback and paperback as well as ebook!

 

From the press release: In this ground-breaking new history of early America, historian Robert Zimmerman not only exposes the lie behind The New York Times 1619 Project that falsely claims slavery is central to the history of the United States, he also provides profound lessons about the nature of human societies, lessons important for Americans today as well as for all future settlers on Mars and elsewhere in space.

 
Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space, is a riveting page-turning story that documents how slavery slowly became pervasive in the southern British colonies of North America, colonies founded by a people and culture that not only did not allow slavery but in every way were hostile to the practice.  
Conscious Choice does more however. In telling the tragic history of the Virginia colony and the rise of slavery there, Zimmerman lays out the proper path for creating healthy societies in places like the Moon and Mars.

 

“Zimmerman’s ground-breaking history provides every future generation the basic framework for establishing new societies on other worlds. We would be wise to heed what he says.” —Robert Zubrin, founder of founder of the Mars Society.

 

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One comment

  • Dr. Kent L. Miller

    Azolla Event
    In the past few years we have learned much about the paleo-climate of the Artic. In particular, I would like to draw your attention to the “Azolla Event,” named after a little fresh-water fern, which during an 800,000 year period, 49 million years ago, stripped about 80% of the CO2 out of the atmosphere.
    Interpretation
    While some claim that this event caused the change from greenhouse to icehouse conditions, the temperature (as reconstructed from proxies) did not drop suddenly. Rather, the temperature declined gradually over a period of millions of years.
    References for Layman
    Whaley, J. The Azolla Story: Climate Change and the Arctic Hydrocarbons. Geoscience Explained, 66-72 (Sept 2007).
    References for Scientists
    Brinkhuis, H., et al. Episodic fresh surface waters in the Eocene Arctic Ocean. Nature 441:606-609 (2006).
    Moran, K., et al. A Cenozoic History of the Arctic Ocean. Oceanography 19:162-167 (2006).
    Moran, K., et al. The Cenozoic paleoenvironment of the Arctic Ocean. Nature 441:601-605 (2006).
    Enjoy!

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