A new study finds reasons for forecasting increases in hurricane intensity and rainfall production. The research found that the most destructive storms of the past were bolstered by higher temperatures in the air and on the sea surfaces where they occurred. As a consequence, when looking ahead, if “the world warms by 3C to 4C this century then hurricane rainfall could increase by a third, while wind speeds would be boosted by as much as 25 knots…..Hurricanes, or cyclones as they are known in the Pacific region, draw their strength from warmth in the upper layers of the ocean, while their rainfall is influenced by the amount of moisture in the atmosphere.” Both of these regularly increase with climate change.
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Seagrass is incredibly productive at storing carbon, and is rapidly being lost (Popular Science). The losses are mostly due to human carelessness, and could be corrected. When they vanish there are significant losses of CO2 that end up in the atmosphere.
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Reducing carbon emissions based on economics alone is not good enough (Scientific American). That is basically the extent of what current policies rely upon. Acceptance is high because there are no sacrifices involved and there are savings to celebrate. Economic growth can go on at the same rate as before, and the inevitable losers are not hard to take care of. That would all have to change if any sort of realistic climate goals were to to be met. According to a new IEA report fossil fuel demand has been slowed but will continue to rise in the face of the strength of overall global energy demand.
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Elizabeth Kolbert interviews a top-level spokesman for negative emissions technologies (Yale e360). This is a fairly complete overview except there were no questions asked about sources of funding to do the work. There are prospects for the cost of direct air capture of CO2 to drop below $100 a ton in a decade or so, which will help. One bright spot is that technologies for safely storing CO2 once it has been captured have advanced to a point where this is no longer seen as an obstacle no matter the required amount. (Elsewhere, people are known to be working on ways to make use of large quantities of CO2 as a valuable raw material, which was not mentioned.)
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A large impact crater has been discovered along the northwest margin of the Greenland Ice sheet. This is very exciting news for anyone interested in climate history since evidence, while still uncertain, suggests the event could have occurred as recently as 12,000 years ago. That could explain the origin of the Younger Dryas episode that has left records completely baffling to scientists—there is no shortage of theories that it may have been caused by just such an impact. Stand by for more developments as this story unfolds.
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Democratic politicians are being urged to seize the initiative on climate action (The Guardian). A former campaign aide has tweeted, “Entire towns are burning to nothing in California. People are being incinerated alive in their cars attempting to flee. But a majority of Democrats still won’t reject fossil fuel money, and no one has put forward a climate plan that is remotely commensurate with the IPCC findings.” There have been some rumblings that this could change.
Carl