A new report report concerning future carbon emissions from permafrost (NASA). There are two main takeaways. One is that current emissions from permafrost thawing in the more southern regions are being fully offset by additional surface plant growth in those regions, which will continue for a long time. The other is that thawing in the more northern regions will begin releasing carbon in a few decades that will not be offset as much by sinks. This will continue for an even longer time. The northern region has far more permafrost and far more carbon to emit.
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Authors of another study are more worried about the release of mercury from thawing permafrost. Mercury becomes concentrated in permafrost soils in much the same way that carbon does, and is released upon thawing much like carbon. It becomes dangerous when released, as it enters the food chain. The study has nothing to say about the possibility of harmless sinks like those that can be found by carbon. The problem has already started and is likely to expand when the northern regions begin thawing, as in the story above.
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A new study finds a strong connection between heavy CO2 emissions and the deoxygenation of ocean waters. The story is based on discoveries surrounding extreme events that happened 94 million years ago when volcanic emissions of CO2 were exceptionally high. Many reasons are given for the cause and effect relationship that results in deoxygenation, which is happening again today on a scale that is much lower, but rising in a worrisome way.
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A thorough investigation of how global warming might still be held to within the 1.5C target by 2100 (Carbon Brief). A group of scientists has created highly detailed new models showing how it can be done, which unfortunately include considerable reliance on negative emissions, principally in the form of widely-discredited BECCS. The group leader follows up by saying, “This indicates that a focus on sustainable lifestyles that limit energy demand can strongly reduce the reliance on BECCS.”
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Here is another example of the problems that are faced by any set of plans aimed at stopping deforestation on a global scale. The power of money is very strong and keeps showing up wherever you look.
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A new way to manufacture lithium-ion batteries has large benefits at no additional cost. “Experiments have shown that the bilevel equalizer increases the discharge capacity of lithium ion batteries by about 30 percent, and the pack lasts longer because the cells are balanced.” It sounds like the product is ready to go and is already being licensed to manufacturers. This should really do some good. The principal inventor has an interesting story of her own.
Carl