Richard Alley

Professor, PennState University

Expertise: Guest analyst - Sea level change, Glaciology




Grist article on an “Ice Apocalypse” mostly accurate, but doesn’t make the likelihood of that apocalypse clear enough to readers

in Grist, by Eric Holthaus

— 28 Nov 2017

"The article has a bias, emphasizing the high end scenarios of ice sheet behavior, avoiding scrutiny of model assumptions. The concept of marine ice cliff instability and how unusu..

Analysis of “Flooding of Coast, Caused by Global Warming, Has Already Begun”

in The New York Times, by Justin Gillis

— 07 Sep 2016

"The theory of sea-level rise and flood problems is pretty well understood — this makes the point that this theory is also happening now and can only be expected to get worse —..


Sea level could rise by as much as 1 or 2 meters (3.3-6.6 feet) by the year 2100

"Sea level rise could reach six or seven feet by the year 2100."

SOURCE: Justin Gillis, The New York Times, 3 Sept. 2016