Climate Letter #679

Record hot global temperature for the month of May—but.  This post offers a keen analysis, because it shows that this monthly record was broken by a lesser amount than was each of the seven previous months, as the effect of El Nino has faded.  It is not even certain that 2016 as a whole will end up warmer than the 2015 full-year record, because of how quickly we could be witnessing the oncoming of a powerful La Nina.  That’s the way nature often works.

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What coal ash is doing to a town in Oklahoma.  Coal ash depositories always cause some level of environmental problems, but this is the worst I have heard of.  And why is there no agency ready and eager to step in and provide a cure?  Senatorial protection, maybe?  I also wonder about whether similar ash has caused problems like this in China, which has built so many coal generators in recent decades, and is not known for tight regulations.  They do seem to have lately turned their back on coal rather decisively, after discovering what its burning can do to air quality.
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New worries about the release of CO2 from topsoil.  This study, based on long-term physical tests, showed a substantial release from a class of forest soil, unrelated to permafrost, attributed to the warming of summer temperatures.  The global potential for much more of this type of activity is strong enough to be worrisome.
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A new study shows the influence of aerosol abundance on rainfall intensity.  This difficult research was able to demonstrate that the more aerosols there are in the atmosphere the more likely the buildup of extreme weather systems that produce rainfall intense enough for flooding to result.  Certain human activities are a major source of aerosols.
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A review of the “New Energy Outlook” published for clients of a Bloomberg finance unit.  This major report, mostly about the power sector, is the work of 65 specialists from all over the world.  It is quite bullish on the prospects for renewable energy, running well ahead of the curve represented by conventional opinion.  Existing natural gas and coal plants will increasingly be idled as a result.  An interesting chart is included which shows how wind turbines have been able to significantly increase their effectiveness in capturing energy through better engineering and placement.
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Six weeks after it began, the Fort McMurray wildfire has finally stopped growing.  It has burned an area that covers 5900 square kilometers, or more than 2000 square miles.  Amazing.
Carl

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