Wildfires are raging in Colorado under “prime” weather conditions. Nearly all of the state is experiencing moderate to exceptional drought, and now there is a strong heat wave on top of it. Denver hit 105 yesterday, tying its all-time record for any one day.
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The rapid melting away of glaciers is causing all kinds of problems in Peru (The Guardian). For some, the result is too much water, which is stuck in the wrong place, and for others, too little.
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What were climate conditions like in the Mid-Miocene warming period? A science writer has interviewed or otherwise contacted a number of climate scientists on this subject and written up a fine summary report, very well annotated, for the Ars Technica website. This period was chosen because the CO2 level had risen to around 500 ppm in the wake of a massive flood basalt event in the Pacific Northwest. That same level, along with its consequences, is one of the more likely possibilities for being reached again later in this century. There is extensive scientific literature on conditions during the more recent Pliocene period, when the CO2 benchmark was more like that of today, and the Mid-Miocene is now being studied as the best clear reference for conditions at the next step beyond.
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Another new study is focused on emissions that are difficult to eliminate. This is similar to the study reviewed in yesterday’s letter, by a different group of scientists who were basically searching for solutions. This post from Inside Climate News includes a pie chart that breaks down all global emissions according to categories, a handy thing to have in hand.
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An introduction to a worthwhile climate-related newsletter, called “Generate”. Generate is a fairly new arm of Axios, an online news publisher that was launched just last year. The stories I am seeing are in several ways complementary to those I pick out for the Climate Letter, so you might have an interest in becoming a subscriber. The lead story today provides an unusual analysis of certain difficulties envisioned along the road to reducing carbon emissions, highlighting future closures of nuclear power plants. The story about cryptocurrencies’ energy demand is interesting, so is the one about the pushback in Congress against the carbon tax, and seeing Pope Francis in action is always a joy. All the stories make good points one way or another.
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Tim Radford has his own unique review of the newly published World Atlas of Desertification.
Carl