Lessons Learned from My Failed Greenland Prediction and NOAA’s Shifting Goalposts

  Guest Thread by Jim Steele In December 2014, I posted the essay Will Greenland Begin Accumulating Ice in 2015 and Beyond. Based on 1) my understanding of Greenland’s icecap dynamics, 2) changes in the North Atlantic Oscillation and its effect on heat transport, and 3) NOAA’s 2014 Arctic Report Card indicating a rapid deceleration…

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#AGU15 Accidental Geoengineering? Airline traffic may help create an icy haze that’s brightening U.S. skies

SAN FRANCISCO, CALIFORNIA —The data just didn’t seem to make sense. That’s often the story right before scientists make a leap in understanding. In this case, scientists had some evidence that skies in the continental United States have been brightening, after several decades of so-called “dimming.” Brightening and dimming are overly simplified words that signify…

"Negative Emissions": Burning trees, burying the CO2

Guest essay by Eric Worrall The Guardian reports that the leaders of the European Union have asked the UN for advice about “negative emissions”. The “negative emissions” proposal is like regular Carbon Capture and Storage, except more unworkable. EU says 1.5C global warming target depends on ‘negative emissions’ technology EU climate chief says that aspirational…