A new study highlights the danger of natural CO2 release from warming of soils. Scientists at Berkeley Lab discover considerably more release from deeper layers of warming soil than what has been assumed. The soils tested were of an ordinary kind, not frozen or waterlogged. The potential for CO2 loss is sizable, making a compelling new reason to keep the global temperature rise within the 2C limit. (This can be compared to the discovery of high methane release from warm pond water reported in yesterday’s letter.)
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The Great Barrier Reef is suffering another mass bleaching event. It is happening for an unprecedented second year in a row, this time affecting some areas that escaped serious damage a year ago. The return of unusually warm water is responsible, but in this case there is no EL Nino in progress that can be blamed.
–Here is a weather map (scroll down) which shows how much the surface waters off Northeast Australia have warmed lately compared with the late 20th century baseline. Being so close to the equator to start with leaves little room for slack from the corals’ point of view.
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The vital role of forest management in mitigating the effects of climate change. One group of researchers reports that plans which have been submitted in writing by various nations under the Paris Agreement, if robustly pursued, “could contribute 25% of the total promised reductions in the greenhouse gas emissions that fuel global warming.” Other recent reports have put more focus on what is actually happening in the way of losses due to drought and rising temperatures.
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An economic policy called “agrowth” is advocated as a companion to rapid emissions reduction. A professor has come up with a theory that he says will reduce friction between those who insist on maintaining growth while greening and those who believe in “degrowth” by consuming a lot less. Many of his arguments are sound, but seeing them put into effect requires a public majority that literally makes climate mitigation their highest of all priorities, which in most places has a long way to go. I personally believe, much like Kevin Anderson, that working within the constraints of the carbon budget will require substantial cutbacks of consumption in the wealthier nations, and trying to hide that reality or compromise it away is not likely to be helpful.
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Who is Scott Pruitt? In case you have not seen this story, this is the man who is in charge of maintaining environmental security for the American people.
Carl