Two notable scientists describe what constitutes the “Amazon tipping point” and say it has already arrived (Science Advances). This article makes the essential rainwater recycling process clearly understandable. (Be sure to note that the winds that make it possible regularly move from east to west, unlike our most common experience with winds in the US.) The authors do not think the drying-out process is irreversible at this point, but soon could be if the remediable actions they recommend are not taken.
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–One of the authors, Thomas Lovejoy, in an interview with George Mason University, went on to talk about the ecological consequences, plus the extensive release of carbon to the atmosphere, that would be caused by further destruction of the Amazon rainforest.
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An interview with a leading “Earth system” scientist (Phys.org). Johan Rockstrom was an originator of the “planetary boundaries” concept in 2009, “which has since become a central paradigm for evaluating Earth’s capacity to absorb the impact of human activity.” The concept involves numerous tipping points that have been extensively written about, normally accompanied by warnings of what happens when they are crossed (as in the above story). He worries about the prospect of complete loss of control: “We don’t want to push the ‘on’ buttons of runaway global warming. The next decade is our window to avoid coming too close to those pressure points.”
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All about the temperature records that tell us global warming is real (Washington Post). A cleverly constructed post depicts the highlights from three centuries of record-keeping that enable scientists to draw the many charts we see—with reasonable accuracy. Fun to read with plenty of nifty graphics.
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Moscow is having an extraordinarily mild winter (New Straits Times). Even Vladimir Putin, known as a big denier of climate change, has noticed that something strange is going on.
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A prominent Australian commentator foresees a major shift in public sentiment beginning at some time in the next five years. Paul Gilding has had a unique career as a “sustainability activist” for four decades. From the link to his bio, “He now travels the world alerting people – in business, community groups, government and even the military – to the global economic and ecological crisis now unfolding around us, as the world economy reaches and passes the limits to growth.” This post describes the coming shakeup with much of the emphasis on how financial markets will react as the truth sinks in. All of his facts are documented in footnotes. Tom Friedman once wrote in the New York Times, “Ignore Gilding at your peril.”
Carl