Climate Letter #494

The case for climate change optimism.  This is provided at length in an article by Jonathan Chait in the September 7 issue of New York Magazine, covering many bases with some keen perceptions.  The vital importance of a turnaround in China is dealt with hopefully.  In the U.S., the prospect for change at the top of the Republican Party, while not in sight, cannot be ruled out any more than the prospect of gay marriage was, for example, in the face of enough public support.  Many more such points are made.

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Chris Mooney, writing for the Washington Post, comments on Chait’s article with a sense of agreement on the premise of a general awakening, but is wary of coming to premature conclusions of a less than deeply burdensome outcome.  More of our bad habits are sure to continue for at least a few decades, and much of the damage that has already been done has not yet fully materialized.
I am adding the following post mainly because of the chart that is provided showing annual CO2 emissions by major nations since 1970.  What stands out is the effect China has had just in the current century, making an abrupt turnaround clearly necessary in order to support climate optimism.  Even if the desire is there, is the likelihood realistic in the face of so much upward momentum?
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What about climate risks of a type we cannot be sure of?  This subject, which many top scientists take quite seriously, is given proper treatment in a recent article in The Economist magazine.  Many of these risks, which can be conceptually pictured in a reasonable way, are the very ones that would do the most damage if they occur, and for that reason are worthy of being insured against as a precaution.  They are also the easiest for some to deny, just because of their uncertainty.  It’s a frustrating problem.
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Downward trend in oceanic phytoplankton observed.  Besides forming the base of food chain these tiny creatures are currently useful as a means of sequestering carbon at the bottom of the ocean when they die.  The two-minute video has superb graphics.
Carl

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