Monday, September 19, 2016

What Happen When A Law Professor Tries To Use The Physics Of Climate Change

Usually, something like this doesn't have a happy ending. This happened in a congressional hearing by Ronald Rotunda of Chapman University’s Fowler School of La.

But during the hearing, Rotunda picked an odd example of such a dissenter — Jerry Mitrovica, a Harvard geoscientist whose work has shown that when, in a warming world, you lose massive amounts of ice from Greenland or Antarctica, sea level actually plunges near these great ice sheets, but rises farther away from them. The reason is gravity: Ice sheets are so massive that they pull the ocean towards them, but as they lose mass, some of the ocean surges back across the globe.

We have covered this idea extensively in the past, including by interviewing Mitrovica. He has found, for instance, that if the West Antarctic ice sheet collapses, the United States would experience much worse sea level rise than many other parts of the world, simply because it is so distant from West Antarctica. “The peak areas are 30 to 35 percent higher,” Mitrovica told me last year.

But if Greenland melts, pretty much the opposite happens — the Southern hemisphere gets worse sea level rise. And if both melt together, they might partially offset one another.

Rotunda appears to have misinterpreted Mitrovica’s important insight as reflecting a contrarian perspective on climate change.

It is always a bad idea when a person, testifying as an "expert", does not understand the source that person is using, and then had the gall to tell a physicist questioning the conclusion to "read his article".


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