20 May 2010, 12:02am
Latest Climate News
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Inconvenient Truth: Sea Level Rise is Decelerating

The Hockey Schtick, May 18, 2010 [here]

Despite alarmist claims to the contrary, according to both tide gauge and satellite altimetry data, the rate of sea level rise since 1900 (and over the past 6000 years according to paleologic data) has been decelerating, not accelerating. Carefully selected tide gauge data by Simon Holgate of the UK Proudman Oceanographic Laboratory is shown in his poster below, which notes that the rate of sea level rise decelerated in the second half of the 20th century (despite exponential increases in CO2 emissions):

Click to see entire poster presentation

Furthermore, the rate of sea level rise as determined by satellite altimetry (which is only available since 1992 and is calibrated to tide gauges) has also decelerated over the past 5 years from 3.2 mm/yr to only 1.5 mm/yr, about the same rate as calculated by Holgate for the period 1954-2003. Paleologic data also indicate sea level rise has greatly decelerated over the past 6000 years, and that sea levels have been rising naturally since the last ice age.



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