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What the growth curve in CO2 looks like deep in the Southern Hemisphere. Here we can see data taken from a measuring station in Tasmania, which has a seasonal pattern far removed from the northern landmasses, and lags a few ppm behind, but is otherwise on the same general course. The chart near the end shows seasonal highs in October, lows in February or March. All charts have been fattened up since late last year.
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A possible breakthrough for producing jet biofuel from switchgrass. This is happening at Lawrence Berkeley National Laboratory. It may well become the solution to the aviation emissions problem, which was discussed at some length in a post in Climate Letter #653.
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A new study concerning the effect of acidification on fish mortality. One finding was that the combination of rising acidification and reduced oxygen content, as commonly experienced in today’s oceans, is more damaging than expected. The researchers also have learned that acidification alone is more harmful to adult fish than previously thought.
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An analysis of Denmark’s climate policy and practices. Denmark is a world leader in effectively making the transition away from carbon. An American journalist who lives there has written a book that covers the whole story. In this post he is interviewed and talks about the highlights. There is a lot to learn for countries that are willing to follow.
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How much will the temperature rise if CO2 in the atmosphere is doubled? That is the big question central to long-range climate forecasting. Thirteen leading scientists state their personal opinions, which cluster around 3 degrees C. This posts gives some insights into how they do the figuring. Technically, “equilibrium” is not reached until the planet offloads as much heat as it takes in from the sun, which we are not doing right now due to so much heat just being buried in the oceans. During an El Nino event, when less heat is being buried that way, the air temperature numbers pop up, as we have just seen. That gives a taste of what lies ahead, but is so hard for scientists to calculate with any degree of certainty. Some try harder than others to do so.
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A report about massive wildfires on the opposite side of the world. Thanks to Robert Fanney for this timely information.
Carl