Betrayal oozes out of him at every pore

We agree that if the chart above is accurate (a very big IF indeed), some anomalous warming has been taking place on earth recently. Certainly the hockey stick is alarming. But perhaps what should have been more alarming is the disappearance of the Medieval Warm Period from roughly 900-1300, when temperatures were several degrees warmer than they are today. For example, it was warm enough and the seas were sufficiently ice-free in about 1000 AD that Leif Eriksson was able to sail to Newfoundland, which later became impossible again.

We certainly hope that the Michael Mann versus Mark Steyn lawsuit goes to trial. We’d very much like an explanation for the mysterious disappearance of the MWP. We’d also like to hear all about hiding the decline as well.

Update: Steyn has lots more of course.

One Response to “Betrayal oozes out of him at every pore”

  1. Zachriel Says:

    Dinocrat: But perhaps what should have been more alarming is the disappearance of the Medieval Warm Period from roughly 900-1300,

    It’s right there, in the chart.

    Dinocrat: when temperatures were several degrees warmer than they are today.

    That is not correct. While temperatures were somewhat warm, especially in the North Atlantic, Medieval temperatures were globally lower than today’s temperatures. See Mann et al., Global Signatures and Dynamical Origins of the Little Ice Age and Medieval Climate Anomaly, Science 2009.

    More important, it’s not the current warming that of concern, but projected warming over the next century.

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