Thursday, March 29, 2007

Sea Level and Global Warming (continued)

Stefan Rahmstorf posted a clarification of the IPCC AR4 sea level projections on the Real Climate blog this Tuesday. There are 95 comments at this writing (Thursday morning), only a few of which show much insight or real grasp of his data and model results. As the above graph from Rahmstorf (2007) shows, tide gage readings are showing a recent rapid sea level rise which appears to represent an abrupt change from the "stabilized" very slow rise which has prevailed for the past 5,000 years or so1, 2. For the long term perspective on postglacial sea level rise, I suggest the excellent post by Greg Laden which appeared on the same day.

1Rahmstorf, Stefan, 2007, A semi-empirical approach to projecting future sea-level rise, Science 315(5810): 368-370.

2Church, J. A., and N. J. White, 2006, A 20th century acceleration in global sea-level rise, Geophysical Research Letters 33: L01602.

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