Climate Letter #1576

Posted on December 18, 2019 by Carl Campbell
Australia has its hottest day on record (Phys.org).  Average highs for the entire continent were 105.6F, and still higher temperatures are expected this week.  “On Saturday parts of Sydney are forecast to tip over 46 degrees celsius (115 Fahrenheit).”  As for the bushfires that continue to engulf Sydney with their smoke, “Turbulent winds of up to 100 kilometres (60 miles) an hour are forecast to also hit the east coast at the same time and worsen the blazes.”

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A grim new concept for predicting the strength of future hurricanes has been reported (NYU Tandon School of Engineering).  With regard to a newly published study, “This approach indicates the destructive power of Atlantic hurricanes off Africa could reach three times their current level if water temperatures rise by 2 degrees Celsius—well within the range that scientists predict is likely by the year 2100…..The same calculations would apply to any tropical basin on Earth.”  Renowned hurricane specialist Kerry Emanuel is working with the NYU professor who developed the hypothesis, which is based on principles of physics that have been overlooked in the literature of meteorology.
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New information documents the conversion of an Arctic mountain glacier into a fast-moving ice stream (American Geophysical Union).  Scientists are still unsure of the explanation, which causes much more rapid disintegration of the glacier, but are excited by their observations and suspect that global warming is a critical factor.  A short video shows how quickly it happened.
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How oil and gas companies are attacking climate action and why their efforts must fail (Huffpost).  This article covers a lot of ground, starting with a video of Michael Mann being interviewed on television about what needs to be done in the immediate future in order to stave off the worst effects of climate change.  No person can better represent the advanced views of climate science than Dr. Mann, and he lays it on the line.  Most of the article is then devoted to shining a light on the rather sinister efforts to undermine these actions.  I think this article is right on target in both directions.
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The full story of Earth’s hottest decade on record, ending in a climactic way (Inside Climate News).  There is not much new material here, but Bob Berwyn has done a masterful job of putting it all together, sprinkled with excellent chart work.  Actually one of the charts has some new information, concerning recent record Arctic wildfires in the month of June.  In general, the next decade is all but certain to show more of the same effects, but in more extreme ways.
Carl

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