Climate Letter #527

Posted on November 10, 2015 by Carl Campbell
Here are the stories of three ancient societies, in completely different parts of the world, each of them an early victim of climate change, all threatened with the loss of their home territory:

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Turkana county, Kenya.
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Senegal:  Saloum Delta islands.
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Quinault Indian Nation, Washington state.
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New data from carbon cycle research activity in the Arctic.  The Arctic accounts for about 25% of the earth’s sink for excess carbon emissions created by human activities, but according to this report the effect has started to weaken as of just the current century.  A broad range of processes have been studied, showing that the actual sink itself, which captures carbon, may be increasing as it did earlier, due to a continuation of more plant growth, but this effect is now being increasingly offset by natural emissions of both CO2 and methane due to the thawing of soils.  This is worrisome because of the great amount of long-buried carbon still waiting to be released as the region warms.
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Major landmarks in the history of climate science and policy development, by John Holdren.  This is a clear and concise presentation that provides a progressive historical perspective leading up to the critical events that now are finally commanding everyone’s attention.
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An innovation in floating-style offshore wind turbines.  These can be anchored at much greater sea depths than current models. The cost savings should be significant in construction and maintenance, in addition to much greater ability to exploit favorable wind conditions.
Carl

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