Climate Letter #1215

Posted on July 17, 2018 by Carl Campbell
It’s not just air-conditioning—digital power consumption is also rapidly expanding (The Guardian).  “In response to vast increases in data storage and computational capacity in the last decade, the amount of energy used by data centres has doubled every four years, and is expected to triple in the next 10 years.”  Another point, made about consumers, states that “using either a tablet or smartphone to wirelessly watch an hour of video a week used roughly the same amount of electricity (largely consumed at the data-centre end of the process) as two new domestic fridges.”  The article names other high-growth processes, all of which add sizably to the target of fossil fuel consumption that clean energy growth plus enhanced efficiency are seeking to overcome..

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“Carbon farming” is one of the best solutions to climate change mitigation.  Agriculture, which is a major source of greenhouse gas emissions, has unique opportunities to not just reduce emissions but to actually sequester carbon at the same time.  This story from The Daily Beast takes note of efforts being made toward that end.  Farmers will cooperate once they get information about the best practices and perhaps some needed financial support to get started.
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What is the true story of the trend toward global urbanization?  It seems that existing sources of data are mostly garbled and confused, with researchers now claiming that predictions of movement supposed to occur in the future have already been greatly exceeded.  Thus, “the new research argues Asia and Africa are closer to 90 percent and 80 percent, or roughly double previous estimates.”  That’s quite interesting, and If true the full meaning is likely to have considerable significance—which has yet to be revealed.
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A discourse on prospects for meaningful direct air capture (DAC) of CO2, by David Roberts.  This rather lengthy piece is broadly informative and creates what I believe is a realistic perspective, which is preferable to other appraisals that get carried away with unwarranted optimism.  Roberts concludes that DAC is not a silver bullet.  “It’s just a promising development in a world that needs all the promising developments it can get.”
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A sensational picture of a tiny Greenland village being threatened by a gigantic iceberg.  As a bonus the post contains video footage of a 4-mile iceberg breaking off from one of Greenland’s glaciers.
Carl

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