Climate Letter #490

Posted on September 18, 2015 by Carl Campbell
Cooperation between the US and China on climate matters appears to be growing.  The subject is very much a part of the agenda for next week’s summit meeting.  Keep in mind that expansion of renewable energy projects on a worldwide scale opens up vast opportunities for manufacturers, something that China, with its slowing economy, should be especially interested in right now, along with the need for air pollution abatement .

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Arctic sea ice melting connected to methane emissions on land.  This has been demonstrated for the first time using advanced computer models, with field measurements yet to come.  It is a potential concern because of the vast size of the permafrost region judged to be exposed and the progressively rising melting rate.
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A comparison of CO2 emissions caused by humans with those from volcanoes.  In today’s world humans are winning at a rate of about 100 to 1.  There is really no way to argue that today’s global warming is not due to human activity.  Natural variations in the everyday carbon cycle also have little to offer as a factor, but that is another story.
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Was there actually a pause in the global warming trend?  Some new studies using advanced methods of statistical analysis are now claiming that corrected data all but eliminate the pause.  They offer explanations about how to justify the corrections.  The post includes a chart showing the corrected trend, in Fahrenheit.  In any case, 2015 is shaping up as a record year by a pretty good margin.
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A critical challenge for renewable electricity transmission systems is being mastered.  This story calls attention to the nature of the challenge and the company that has leading control technology.  Also note that flow-type batteries were chosen to provide the storage facility.  This is high-level pioneering work that we should be seeing much more of in the future.
Carl

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