Why is there so much interest in Thwaites Glacier? (USA Today) All of the main reasons are well described in this article, which explains why there is such a rush to gain more detailed information. I am sure we will hear much more about this ‘wildcard’ for sea level rise over the course of the current year.
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The ‘other kind of cyclone’ is getting weaker because of climate change, and that is a bad thing for our weather. Tropical cyclones, which are the same as hurricanes and typhoons, have tightly-knit circular wind patterns, are extremely violent, and tend to move along their paths fairly rapidly. There are also ‘extratropical cyclones’ that quite commonly form in the higher latitudes of North America. They also have circular wind patterns, but in this case the winds are slower, the circulating diameters can reach well over a thousand miles across, and their movement tends to be relatively sluggish. The storm systems and weather systems they introduce are typically unpleasant, including fierce Nor’easters in the winter, and can last for many days or even weeks. A new study has found that atmospheric changes due to climate warming has caused changes in the energy output of these systems, both stronger and weaker, and has also caused their movement to be even more stagnant than before, thus prolonging the impacts.
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Separately, an Australian professor has written a piece for The Conversation that takes notice of how many of the brutal weather conditions recently experienced on that continent have shown signs of the same kind of slow movement as in the story above, but more related to tropical storm systems. He asks, “Could this pattern conceivably be linked to global climate change? Are we witnessing a slowing of our weather systems as well as more extreme weather?” Many signs seem to be pointing that way.
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Climate change has been an important factor causing the crisis in Venezuela (Scientific American). This has not been reported in news stories, but the mass migration out of Venezuela has several things in common with the chain of events in Syria that started a few years earlier. “…..aside from the political crisis, Venezuela got 50 to 65 percent less rainfall than the annual average from 2013 to 2016. That led to rationing of both water and electricity because Venezuela is heavily reliant on hydropower…..these shortages helped to hamstring the Venezuelan economy, cut agricultural output and make the lives of ordinary people worse.”
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A statement issued by the European Academies’ Science Advisory Council offers a realistic set of recommendations for integrating ‘negative emissions technology’ (NETs) into official policy positions. Current positions place far too much reliance on capabilities or technologies that may theoretically be possible but in fact are completely unproven. Research on these things can continue, but actual policies should only focus on doing things we know we can do, and not expecting any help from imaginary agencies or from pursuits known to carry their own high risks.
Carl