Saturday, November 23, 2013

Sea Level Experts Concerned About ‘High-End’ Scenarios

Projections of global mean sea level rise over the 21st century relative to 1986–2005 from the combination of the computer models with process-based models, for greenhouse gas concentration scenarios. The assessed likely range is shown as a shaded band. (Credit: IPCC Working Group I) Click to enlarge.
A survey of nearly 100 experts on sea level rise reveals that scientists think there is a good chance the global average sea level rise can be limited to less than 3.3 feet by 2100 if stringent reductions in planet-warming greenhouse gases are rapidly instituted.  However, the survey, which is the largest such study of the views of the most active sea level researchers ever conducted, found that if manmade global warming were to be on the high end of the scale — 8°F by 2100 — the global average sea level is likely to jump by between 2.3 and 3.9 feet by the end of this century.

Worse yet, such a temperature increase could boost sea levels by up to 9.9 feet by 2300, the study found.  Such a drastic increase in sea level would not just put heavily populated coastal cities at risk of flooding, but could also jeopardize the existence of low-lying island nations.

Sea Level Experts Concerned About ‘High-End’ Scenarios

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