Sea Levels Rising 60% Faster Than Expected By Joe Romm, ThinkProgress 30 November 12 http://readersupportednews.org/news-section2/312-16/14803-sea-levels-rising-60-faster-than-expected
[Excerpted] A new study, "Comparing climate projections to observations up to 2011," confirms that climate change is happening as fast — and in some cases faster — than climate models had projected. The news release explains:
The rate of sea-level rise in the past decades is greater than projected by the latest assessments of the IPCC, while global temperature increases in good agreement with its best estimates. This is shown by a study now published in the journal Environmental Research Letters. Stefan Rahmstorf from the Potsdam Institute for Climate Impact Research (PIK) and his colleagues compare climate projections to actual observations from 1990 up to 2011. That sea level is rising faster than expected could mean that the Intergovernmental Panel on Climate Change's (IPCC) sea-level rise projections for the future may be biased low as well, their results suggest.
As Dr. Rahmstorf notes, "the new findings highlight that the IPCC is far from being alarmist and in fact in some cases rather underestimates possible risks."
The oceans are rising 60 per cent faster than the IPCC's latest best estimates, according to the new research. The researchers compared those estimates to satellite data of observed sea-level rise. " Satellites have a much better coverage of the globe than tide gauges and are able to measure much more accurately by using radar waves and their reflection from the sea surface," explains Anny Cazenave from LEGOS. While the IPCC projected sea-level rise to be at a rate of 2 mm per year, satellite data recorded a rate of 3.2 mm per year.Majia here: The study mentioned is open-access and is available here: