Climate Letter #642

New research related to potential melting from Greenland’s glaciers.  This is a very high level body of work, with Eric Rignot as a co-author.  It explains why the underwater melting risk for many of these glaciers is much greater than previously estimated, based on unexpected new findings about seafloor topography.  This information can be applied to research models that have yet to be completed, and that will most likely change their forecasts for sea level rise.

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Conditions are ripe for a new record low for Arctic sea ice extent this summer.  The melting season is just getting started, with weaknesses already apparent.  The record year of 2012 was subjected to extraordinary summer temperatures punctuated by severe late windstorms that broke up much of the ice, factors that may or may not be duplicated.
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More emphasis on preventing deforestation is badly needed.  The loss of trees is a well-known contributor to rising levels of CO2.  Reducing those losses can readily be achieved with a concerted effort.  Doing so would buy considerably more time to make the transition from fossil fuels to renewables, which is more complicated and a more difficult thing to achieve.
Extra comment:  Much the same kind or reasoning can be applied to human-caused methane emissions, which are of comparable impact on the climate.
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A report on coral bleaching from Robert Fanney (“robertscribbler”)  Whenever something really alarming is happening in the climate world Robert can always be counted on to quickly flesh out details and put the situation into a perspective that commands our attention.  This is a classic example.  He has a legion of serious followers, and the comments that follow his posts usually provide nuggets of information as a bonus—have a look.
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The idea of exporting electric power from North Africa to Europe is gaining support.  With desert sun as the main source of energy, and using known technology for handling the problems of transmission, the project is being seen by various analyses as possible to accomplish and economically attractive.
Carl

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