Climate Letter #932

Weather Map findings.  Have a look at the global map for precipitation and cloud cover.  Note how the equatorial rain belt is now located a bit toward the north.  Also, how it is narrow and tight about half way around, then wider and looser for the other half, which is common all year around.  India is just now getting a start for the monsoon season, while northern and southern Africa both remain extremely dry.  Note how thick the cloud cover is over the entire Southern Ocean and Antarctica, and the heavy patches of oceanic rainfall.

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An important new study about how the globe is warming.  When you add together the heat that is employed in warming the atmosphere and that which is consumed by melting of ice the total has been steadily rising.  However, there are periods of years or decades when the proportion between the two shifts significantly, which can be calculated by actual measurements.  This information helps to account for the hiatus in air temperature warming earlier in this century.  (The entire study has open access if you wish to read it.)
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Results from a poll of Americans taken after the Trump decision on Paris.  One interesting figure reports that 72 percent agree “that given the amount of greenhouse gases that it produces, the United States should take aggressive action to slow global warming.”  We also learn that “Only about 4 percent of Americans believe that the “environment” is a bigger issue than healthcare, the economy, terrorism, immigration, education, crime and morality, Reuters/Ipsos polling shows.”  That disappointing number is probably correct.  I happen to be one of the 4 percent, perhaps because of all the evidence I see every day while researching for these letters?
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How the Paris agreement prevents warming and how the US withdrawal will affect it.  Carbon Brief provides an excellent analysis, with numbers taken from a variety of popular sources.  If the US alone delays action for four or eight years and then pursues deep decarbonization—at about the time the whole Paris group is expected to accelerate its action—the ultimate impact will be minimal.  The absence of US leadership will have an effect on what other countries do, both sooner and later, but that is an unknown at this point.
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Worldwide renewable energy capacity grew 10% in 2016, setting a new record.  It was accomplished with a 23% reduction in capital expenditure, thanks to the amazing overall decline in costs.  All across the globe new power deals are now being priced well below fossil fuel or nuclear options.
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Revolutionary new materials hold great promise for carbon capture and sequestration programs.  “A tenfold reduction in large project costs is not unimaginable, which may well bring CCS programs back within the realm of political acceptability.”
Carl

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