The Current Wisdom is a series of monthly articles in which Patrick J. Michaels, director of the Center for the Study of Science, reviews interesting items on global warming in the scientific literature that may not have received the media attention that they deserved, or have been misinterpreted in the popular press.
Could President Obama have picked a worse time to announce his Climate Action Plan?
Global warming has been stuck in neutral for more than a decade and a half, scientists are increasingly suggesting that future climate change projections are overblown, and now, arguably the greatest threat from global warming—a large and rapid sea level rise (SLR)—has been shown overly lurid (SOL; what did you think I meant?).
You hardly need an “action plan” when there is so little “action” worth responding to.
As I frequently discuss the lack of warming and the decreases in the estimates of future climate change, I’ll focus here on new scientific findings concerning the potential for future sea level rise, interspersing a little travelogue.
Projections of a large sea-level rise this century depend on rapid ice loss from Greenland and/or Antarctica. Yes, as ocean waters warm, they expand, but this expansion-induced rise is pretty well constrained and limited to being about 6 inches plus or minus a couple of inches by century’s end. And the contribution from melting glaciers/ice in other parts of the world (not counting Greenland and Antarctica) is even smaller, maybe 2-4 inches. So that adds up to about 8-12 inches of sea level rise by the year 2100—not much different than that which has already occurred over the past century. This is hardly catastrophic.