Climate Letter #754

A new temperature graph from James Hansen, with an 1880 starting point.  It uses the 1880-1920 average for a base period, which Hansen argues is the most accurate representation we have of what is properly meant by “pre-industrial.”  That is because available data from a century earlier is less reliable, and the actual reality probably not that much different anyway.  His chart shows current warming on a moving average track that extends to between 1.1 and 1.2C above the baseline.  It makes a useful guide for referencing the much-publicized 1.5C target.

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A new commentary from Peter Wadhams.  This is about the type of dangerous climate feedbacks we should expect as a result of the current phenomenon of rapidly melting Arctic Ocean ice, something he has studied all his life.  His biggest worry is focused on the possible release of large quantities of seabed methane, now locked into solid hydrates.
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New Orleans sets a temperature record that is truly extreme.  There have been a record number of high nighttime temperatures over the summer, brought on by the persistent warmth of the nearby Gulf of Mexico.
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A profile of the man Trump has chosen to lead a transition of the EPA.  The EPA must no longer be allowed to get in the way of business interests, especially those of coal, oil and gas companies.
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A hydrogen-powered train, using a fuel cell, will soon be a reality in Germany.  It will be far more clean than those with a diesel engine, and possibly more practical than trains using conventional electric power methods.
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There is also growing interest in a variety of fuel cell applications by corporations in the US:
Carl

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