The Great Plains of the western United States are gradually spreading eastward. A research term has found a way to compare conditions of 140 years ago with those of today, all the way from north to south, such that the arid plains have added about 140 miles to their girth. “The researchers predict that drylands will continue to move eastward with the century, as global temperatures continue to rise, and eventually trigger large-scale changes.”
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How the same climate shift is likely to affect the Boundary Waters of northern Minnesota. “If you know where to look, you can already see the Boundary Waters transforming from a lush forest into a desolate grassland.” An ecologist from the University of Minnesota explains what may happen and why. Rains could increase but evaporation would increase even faster as temperatures rise.
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Scientists are worried about more wildfires occurring on Greenland (Scientific American). Last year’s experience was a first, but conditions are ripening for more of these to come. More black soot would then be sure to land on the nearby ice and extend its surface melting. Large stores of underground peat can be found in places exposed to future fires, and would be difficult to extinguish once they start burning.
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What DeConto and Pollard had to say about Antarctica’s potential contribution to sea-level rise over the next 500 years. Their paper, published in the journal Nature in 2016, has been widely quoted as an authoritative study. Here you can read the abstract and an editorial summary, both of which are brief and very clear, highlighting the profound importance of quickly achieving abatement based on this one reason alone.
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Should geoengineering be employed to block incoming solar radiation? This is an excellent primer on the subject, covering all the various arguments in a fair and balanced manner. In a time of true desperation, or when the heat has become unbearable, we know it would work well enough to buy a little time in order to finally do what should have been done long before. We might as well study up on how to do it right, with appropriate controls. (Note—about 30% of incoming radiation is regularly reflected either from the surface or by clouds or aerosols. Some of the aerosols, that have appeared as a result of burning fossil fuels, already have an ongoing cooling effect of about one-half degree C, that will disappear in the presence of aggressive abatement.)
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A nanotech coating discovery that may add considerably to the energy output of solar cells. The process is said to be inexpensive and compatible with mass production. The work, performed at facilities at the University of Maryland, looks like it has credibility.
Carl