Climate Letter #1559

Posted on November 21, 2019 by Carl Campbell
Report from the UK:  A surge of public demand for action on climate change (The Guardian).  “A YouGov poll found that more than half the country backs a national target of zero carbon emissions by 2030, a policy that as recently as a year ago was offered only by the Green party. Other polls suggest that two-thirds of the country believes the climate crisis is the biggest issue facing humankind, and that it has overtaken the economy on voters’ list of concerns.”  This story examines the many implications, which were unexpected.

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An update on the Australian wildfires (BBC News).  “Fire conditions classified as “severe” or higher have affected all six states in the past week. Several states have faced “catastrophic” levels of danger.”  The fire season has grown longer, heat extremes have increased and droughts have intensified, all of which are earmarks of climate change.
–One town in Australia is being hit repeatedly by massive dust storms caused by the same heat and drought (The Guardian).  The dust is said to originate as topsoil from regional farmland.
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A new report on the scientific definition of a climate emergency by David Spratt (Climate Code Red).  David is an Australian who has studied and written about the climate change problem for decades.  “When human-caused warming passed 0.5°C in the 1980s, we departed Holocene conditions and started on a foolish adventure: to see if human societies could exist and flourish in climate conditions modern humans have never before experienced.”  Now we are starting to get real answers, and still more answers have yet to appear.
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Some coral reefs are naturally protected from bleaching and mortality when ocean surfaces have warmed (Hong Kong University of Science and Technology).  Researchers have found that deeper sections are not exposed to as much heat as the upper layers in the presence of cooling currents that sometimes occur.  “The resulting analysis suggests that the presence of internal waves reduced heating, particularly in deeper portions of coral reefs, by up to 88% during the 2015-2016 El Niño. The duration of severe heating events likely to totally kill corals was also reduced at some sites—by 36 to 50%—or prevented entirely at others.”
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A mammoth solar energy project is being planned by two Australian billionaires (Renew Economy).  The $20 billion project would supply cheap electricity to the city of Singapore from solar farms in Australia via underwater cable.  “Cannon-Brookes says he is confident that it would be possible for storage technology to be delivered at such an unprecedented scale, despite pushing the limits of current technology and engineering.”
Carl

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