Climate Letter #924

Posted on May 26, 2017 by Carl Campbell
An overview of the massive damage being done by humans to the world’s oceans, for which there are no effective means of direct control (The Economist).  The editorial concludes that the Paris agreement is the single best hope for protecting the ocean and its resources, but that does not solve all of its problems.  Moreover, having active US participation would be vitally important.

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Electric cars should be cheaper to buy than equivalent gasoline models as soon as 2025.  That is mainly due to the falling cost of batteries, which are now about half of the total cost of the car.  Total ownership cost advantages will occur even sooner because of lower maintenance and cheaper cost of fueling.
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Bid prices for solar energy in India are falling at an amazing rate—down 26% in three months.  Along with lower cost for modules the bids reflect cheaper costs of financing and more supportive government policies.  The new bids are getting closer to the record lows being set in other parts of the world.  India now has every reason to drop its emphasis on coal expansion, which has been a major cause for worry in the environmental community.
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The development of advanced biofuels for aircraft is making progress (Scientific American). The process has been long and slow, but now the end may be in sight.  There are not many other options available for cleaning up the fueling of aircraft, making this one critically important.
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There are no dependable solutions for removing CO2 from the atmosphere.  Many climate mitigation models incorporate “negative emissions” into their projections, thus seeming to reduce the need for humans to be highly aggressive about cutting emissions.  This post from Robert Fanney refers to a number of studies that are critical of this unfounded hope.  I have personally seen nothing that would contradict these doubts.
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A quick look at the problems caused by rapidly advanced melting of sea ice along the coast of northern Alaska.  “It’s another sign that the Arctic is unraveling.”

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