Climate Letter #1516

A report from the WMO about the recent acceleration in the behavior of climate change (The Ecologist).  This summarized description of all the important trends,  based on inescapable hard data, is being addressed to participants in the new UN climate action summit beginning today in New York.  Everything we fear most is increasing while nothing of the sort is slowing down.

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What the summit meeting is seeking to accomplish and what to expect from various countries (EcoWatch).  Will all of the protests that have been going on, plus the dramatic uptick in media coverage, have a helpful influence on the delegates?
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An expert describes the outlook for ice loss from Antarctica (Phys.org).  “The fate of the world’s coastal regions and the hundreds of millions of people who inhabit them depend on a block of ice atop West Antarctica on track to lift global oceans by at least three metres…..There is no longer any ambiguity. The studies we have in hand tell us that West Antarctica has passed a tipping point. It has become unstable and will discharge all its most vulnerable ice into the ocean. Period.”  However, scientists are still uncertain about how much of that block will go to sea in this century.
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Imelda’s Floods:  Part of a New Normal for Southeast Texas (Weather Underground).  “Climate change is leading to heavier extreme rains as well as slower-moving tropical cyclones…..there is no doubt that the region’s most intense rains are getting even more intense…..Flood mitigation & larger scale disaster planning is crucial…..This known risk not going away.”
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Data-based evidence of how climate change helps drive migration from Central America (NBC News).  “Research compiled one year ago by Customs and Border Protection pointed to an overwhelming factor driving record-setting migration to the U.S. from Guatemala: Crop shortages were leaving rural Guatemalans, especially in the country’s western highlands, in extreme poverty and starving.”  In addition to the loss of personal food supply, what is by far the most important cash crop, coffee, has been devastated by the multi-year drought.
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From Peter Sinclair, a definition of Swanson’s Law, the solar industry’s equivalent of Moore’s Law in data processing:  “Swanson’s Law is the observation that solar PV panels tend to become 20 percent cheaper for every doubling of cumulative shipped volume.”  The graphic evidence that is shown is pretty amazing.
Carl

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