A new study measures the “heat island effect” in the globe’s megacities. The main conclusion is that, for the last three decades, really big cities have been realizing temperature increases on the hottest days of the year that are growing at a rate substantially faster than the average for such days anywhere else. This is based on studies of 8,848 land-based weather stations around the world. If this continues, “adverse effects for human societies are inevitable.” What is also interesting from the study is that all weather stations are showing average gains of 0.25C per decade on hottest days for the past three decades, up from 0.19C in the previous two. Global average temperature statistics, which show gains averaging 0.18C per decade, include adjustments that eliminate any distortions that would otherwise be caused by the urban heat island effect, which is assumed to be unnatural. This will give you an idea of the size of those adjustments, and how they probably need to keep growing. Meanwhile, the population of megacities also keeps on growing, at an accelerating pace, perhaps unwisely.
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Has global warming accelerated in the last three years? A study issued from the University of Arizona makes note of the unusual size of the global temperature gain in the last three years and identifies the fundamental reason for the jump. No one will argue with that reason, which involves a large release of heat from the ocean surface under the influence of a full El Nino pattern affecting ocean water circulation, and which came on the heels of a lengthy pause for that kind of activity. The paper goes on to suggest that something more fundamental is happening that would increase the frequency of this type of outburst if CO2 keeps growing at the current rate. “Our research shows global warming is accelerating,” Yin said. This paper is the first to make such a claim, which means it is sure to get plenty of attention and also a large amount of close scrutiny.
–Open access to the study is available at: http://onlinelibrary.wiley.com/doi/10.1002/2017GL076500/epdf
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The vice chairman of the world’s largest asset management firm made a statement at Davos confirming his unusual thoughts about the need for change. “We have to change capitalism. This is really what’s at stake here. And frankly we need a new contract between companies, investors and governments,” said Hildebrand. Practically the whole world has lately been converted to capitalism in one form or another, with a fair degree of enthusiasm. What kind of new contract does this person actually have in mind, and is it realistic?
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A climate history controversy may finally have been resolved. Certain theories about the cause of the Younger Dryas cold period 13,000 years ago, which was very abrupt, deep and lengthy, have been bolstered by a newly discovered source of tangible evidence.
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An update on the offshore wind industry that has suddenly picked up considerable momentum along the US East Coast. Successful development that has already been established in Europe can be repeated on this side of the Atlantic Public opposition for aesthetic reasons seems to have been reduced considerably.
Carl