Climate Letter #694

CO2 report for the month of June.  The increase was almost exactly 4 ppm over June of 2015.  This very high number reflects nearly the full impact of a major El Nino, except for some of its aftereffects.  Those will include damage that’s been done to both tropical and boreal forests, mostly by drying, that has not been repaired and thus inhibits their normal carbon uptake.  If you click on the “growth rate” link in this post and mentally plug in 4 ppm for 2016 it will stick out like a sore thumb.  Note that 1998, which was a similar type of El Nino year, acted in the same way, followed by a huge decline in 1999.  That’s something to rightfully expect again next year, the absence of which would cause loud alarms to be raised.

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An analysis of peat fire damage and how better to establish controls.  These often huge, unseen fires have been a major cause of the excess release of CO2 in the past year and also of weakness in carbon sink performance.
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The regeneration of forests on previously cleared land is a proven way to soak up large amounts of carbon from the atmosphere, but often overlooked by public policy.  It is every bit as important as preventing deforestation.
http://www.reportingclimatescience.com/2016/05/14/young-forests-capture-lots-of-carbon/
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Climate change lacks priority as a US election issue this year.  The Guardian has done a fine job of sampling and measuring public opinion, which is highly divided along political lines.  Technically, the Democrats should be in great position to use the fear of climate change as a wedge issue, but that is not happening.  Even a candidate like Bernie Sanders who has supported unusually strong climate policies is shown to have other issues on his agenda that were pursued more vigorously.
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A favorable review of a new book, “The War on Science.”  John Abraham thinks everyone who cares about the ongoing attacks on climate science will want to read this book.  Check it out.
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New evidence shows the cause of a major extinction event.  The dinosaurs, and a lot more species, were killed off not just by an asteroid but in combination with the climate disturbance caused by a massive flood-type volcanic eruption that occurred 150,000 years earlier.  The well-explained evidence is provided by ocean water temperature studies that reveal sharp spikes of warming tied to each of the two events.  The volcano is associated with the warming of Antarctic waters by an astounding 14F, presumably mediated by a huge buildup of greenhouse gases.
Carl

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