Climate Letter #1026

Posted on October 18, 2017 by Carl Campbell
Important new information about natural sources of CO2 emissions, retrieved by a new satellite program.  During the 2015 El Niño, “there were three completely different responses to the climate event and they resulted in the release of nearly 3 gigatons of carbon, equal to about a third of all the emissions from fossil fuel burning, so this isn’t just some small detail.”  The story has a clear explanation, which is then connected to the warming trend that is likely to suppress the normal carbon sink phenomenon as we move beyond El Nino years.

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Tim Radford posts a review of a recent study (reported in CL #1018) about the release of carbon right out of the soil in temperate zones as the soil becomes warmer.  This effect is closely related to the one described above, except that it is a slightly different source of terrestrial carbon.  Remember also that farther to the north there is an even larger store of carbon set for release from the thawing of permafrost soils.  One gets the idea that there is no time to waste in cutting the flow of CO2 from human activity, which is the cause of the warming, and which is the only one of these things we can control.
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From Deutsche Welle, a discussion about the potential drawbacks of geoengineering schemes, which are increasingly seen as undesirable.  From what I can see, the proposals advocated by Nature Conservancy (see yesterday’s letter) are much more “down to earth” and do not have any of these drawbacks.  Maybe it’s time for the techno-fix crowd to shift gears and give them a hard look.
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The news keeps getting better for electric cars.  Joe Romm thinks we will soon have batteries that can be charged as quickly as filling a gas tank, after which there will be no remaining advantages left for gas or diesel car producers to brag about.  Moreover, as electric power keeps getting cheaper, “both the initial cost and the lifetime cost of EVs will continue to decline for decades.”
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The science of thunderstorms.  This post takes a close look at how they are set up, and why they are destined to become much stronger in the tropical part of the world.
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An amazing story about the amount of microplastic bits found in European beach sand.  It’s not surprising when you consider how much plastic has been found in the oceans.
Carl

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