A new study finds direct evidence of feedbacks between soil moisture and changes in air temperature (Phys.org). The clearest statement of results, as found within the study: “Ecosystems in very dry regions most likely decrease carbon uptake under warming conditions and thus cause a positive feedback to climate warming. In contrast, ecosystems in wet regions possibly generate a negative feedback. Moreover, warmer climate will result in chronically lowering soil moisture.” (Always remember, a “positive” feedback just means more of the same, for better or worse.)
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A short review of the status of seven possible ways to help the climate through geoengineering (Phys.org). About the only comment one can make is that nothing seems to have changed. Some of these things are definitely helpful, even if just in a small way, and should be pushed forward. Drastic cuts in wasteful energy consumption would at least slow the progress of the main cause of climate change, with fewer drawbacks.
–There is a new study making the argument that burning wood pellets for energy should not be classified as a renewable alternative, like wind and solar, but has the opposite effect.
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Great Lakes water levels are up six feet in six years (E&E News). “Gronewold describes the shift as a “tug of war” between two dominant natural forces — precipitation and evaporation — that are becoming increasingly erratic. If any one of those forces has an induced variability, you’re likely to have pronounced shift in the water regime.” Precipitation seems to be winning these days.
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Update on the current fire season in Alaska (The Guardian). “Everything points to more fires, longer fire seasons and more intense fires…..There is no silver lining…..As the Arctic warms twice as fast as the rest of the planet, Alaska as a whole is feeling the climate crisis more acutely than many other US states.” A long list of things are going wrong.
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An unusual indicator of climate change has made its mark in the British Isles (CNN). “A tropical plant has produced male and female cones outdoors in the UK for the first time in 60 million years, in an event that botanists say is a clear indication of climate change.” The particular location is a bit special, but the symbolism is still noteworthy.
Carl