German Geologist: ‘Sea Level Rise Lagging Behind Projections’…No Detectable Acceleration!
German Geologist: “Sea Level Rise Lagging Behind Projections” …No Detectable Acceleration!
Over the last couple of days at their Die kalte Sonne blog Geologist Dr. Sebastian Lüning and professor of chemistry Fritz Vahrenholt have focused their attention on sea level rise. On Monday they wrote a piece titled: “Sea level rise lagging behind expectations: Now only ‘data massaging’ helps“. In their post the two authors present a number of charts and cite many papers. In the end they conclude that sea level rise has not accelerated at all, despite what the media and a few alarmist scientists may otherwise claim. Lüning and Vahrenholt write that sea level acceleration is the result only when one dubiously fudges the data: What would you think if a soccer game ended with a score of 3:1, but the result later changed to 3:3?” Today Lüning and Vahrenholt followed with another post on sea level rise, which shows that the methodology used at times by scientists to compute and project sea level rise leaves little to be desired. ======================================== What climate models have not taken into consideration up to now: Up to one third of the sea level rise traced back to ocean salinity By Dr. Sebastian Lüning and Prof. Fritz Vahrenholt [Translated/ edited by P Gosselin] For over one hundred years there has been a network of coastal tide gauges around the world that serve to measure the sea level. The hard data that is recorded play a decisive role in determining sea level rise. Because some coastal locations are rising and some are sinking, the corresponding vertical movement has to subtracted from or added to the tide gauge readings respectively. Using satellite measurements, today this can be corrected with reasonable accuracy. In March 2014 in a paper in the Geophysical Research Letters a team of scientists led by Guy Wöppelmann conducted a global revision of all GPS corrected coatal tide gauge measurements for the 20th century. The result is interesting: While sea level rose an average of 2.0 mm per year in the northern hemisphere, it was only about half as much in the southern hemisphere: 1.1 mm/year. What follows is the paper’s abstract: Evidence for a differential sea level rise between hemispheres over the 20th century Tide gauge records are the primary source of sea level information over multi-decadal to century timescales. A critical issue in using this type of data …