R.G. Dean

The scariest part of the global warming scare is the prediction of rapidly accelerating sea-level rise. In An Inconvenient Truth, Al Gore warns that if half the West Antarctic Ice Sheet and half the Greenland Ice Sheet melted or broke off and slid into the sea, sea levels could rise as much as 20 feet. Gore implies this could happen within our lifetimes or those of our children, stating, in the book version of AIT (pp. 204-206), that some 100 million people living in Beijing, Shanghai, Calcutta, and Bangladesh would  “be displaced,” “forced to move,” or “have to be evacuated.”

I debunk Gore’s sci-fi doomsday scenario in earlier posts.  Suffice it to say here that the UN IPCC’s 2007 Fourth Assessment Report projects 18-59 centimeters (7-23 inches) of sea-level rise by 2100. To be sure, some scientists, such as Scripps Institute of Oceanography researcher Dr. Richard Somerville, who testified recently before the House Energy and Power Subcommittee, claim the IPCC estimate is too low and that sea levels will rise by 1-2 meters.

Drs. Shirwood, Craig, and Keith Idso, our colleagues at the Center for Study of Carbon Dioxide and Global Change, have posted an editorial on sea-level rise that reviews a new study based on global tide gauge data.

The study, Houston and Dean (2011), finds that the rate of sea-level rise over the past 80 years has not accelerated and, in fact, has slightly decelerated. If I were a betting man, I’d put my money on sea level rise ending up near the low-end of the IPCC projection — about 7 inches, roughly the same amount as occurred in the 20th century. Clearly, now is not the time to sell the beach house!

The Idsos’s editorial follows in full: [click to continue…]