Climate Letter #644

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An important new study about the likely cause of climate change in the distant past.  Scientists have learned a new way to estimate past atmospheric CO2 levels by analyzing the shells of certain marine fossils from eras that already have established estimates for prevailing temperature conditions on many different dates.  The researchers can observe a correspondence similar to what we see today while using more direct measurements.  “The comparison gives us more confidence in our predictions of future climate warming in the face of rapid anthropogenic CO2 increase.”
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A new report on how vegetation around the globe has been greening.  Plants and trees remove about a quarter of the extra CO2 added by human activity, something to be thankful for.  This study tells much about how it is done, where, some drawbacks, and other details.  The rate at which it happens could decline at any time, and that would be a problem.
Note:  The CO2 level yesterday was 408.23, adding to recent signs of unexplained trouble.  See yesterday’s letter for more of the story.
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The Saudis are planning to sharply reduce their dependence on oil income.  The country is also planning meaningful cuts in emissions as part of the Paris climate deal.  A whole new restructuring of the economy is taking shape.
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The Paris climate accord has caused pronounced changes in attitude and more purposeful activity in a great many places.  This story provides a broad survey of how momentum is building.
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A story from Scientific American about how climate change is affecting different species of penguins in the Antarctic.  For some it is not all bad.
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An invention that can save a lot of money for homeowners installing new solar energy systems.
Carl

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