Are Scientists Preparing for a FlipFlop Back to Global Cooling Predictions?Posted: July 3, 2016
Graph from p3768 of J. Hansen et al.: Ice melt, sea level rise and superstorms.
Guest essay by Eric Worrall
The alleged weakening of the Atlantic Meridional Overturning Circulation appears to be triggering a growing amount of speculation about abrupt cooling, like the plot of the movie “The Day After Tomorrow”.
Crippled Atlantic currents triggered ice age climate change
The last ice age wasn’t one long big chill. Dozens of times temperatures abruptly rose or fell, causing all manner of ecological change. Mysteriously, ice cores from Greenland and Antarctica show that these sudden shifts—which occurred every 1500 years or so—were out of sync in the two hemispheres: When it got cold in the north, it grew warm in the south, and vice versa. Now, scientists have implicated the culprit behind those seesaws—changes to a conveyor belt of ocean currents known as the Atlantic Meridional Overturning Circulation (AMOC).
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