Climate Letter #915

Global temperature update for April from James Hansen.  His baseline is considered the practical equivalent of “pre-industrial,” which was less carefully measured at the time.  Note how the famous “hiatus” took shape from 1998 to 2013 and then vanished.  When do you think we will see the blue line fall below the extended red line, and what does it mean if we don’t?

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All about the Thwaites Glacier in West Antarctica and why it is such a big problem.  This is the one that Eric Rignot said was unstoppable back in 2014, and would eventually result in over ten feet of sea level rise.  The latest observations from a number of other scientists are gathered into this fine article from Rolling Stone.  “If there is going to be a climate catastrophe,” says Ohio State glaciologist Ian Howat, “it’s probably going to start at Thwaites.”
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Secretary Tillerson signs an agreement reaffirming commitments to protect the Arctic on many levels, including the Paris approach to climate change.  This reasonably suggests that the US will be staying within the accord.  The post has a link to the agreement, which Russia and six other governments also signed, and which is quite powerfully worded.
–Joe Romm has an interesting thought about another reason why president Trump will decide to stay with Paris:
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A promising new way to harness energy from ocean waves has been developed.  It has a unique way of eliminating the usual problems of corrosion that limit design life, and is cost competitive with coal-fired power production.  The device is ready for testing off an island near Australia.
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The tragic expansion of palm oil plantations has a parallel in California, Oregon and many other parts of the world.  The basic reason is exactly the same.  The results are equally sad.
Carl

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