Evidence for a differential sea level rise between hemispheres over the twentieth century
| Type | Article | ||||||||||||||||||||||||||||||||
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| Date | 2014-03 | ||||||||||||||||||||||||||||||||
| Language | English | ||||||||||||||||||||||||||||||||
| Author(s) | Woeppelmann Guy1, Marcos Marta 2, Santamaria-Gomez Alvaro1, 3, Martin-Miguez Belen4, Bouin Marie-Noelle5, Gravelle Mederic1 |
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| Affiliation(s) | 1 : Univ La Rochelle, LIENSs, CNRS, La Rochelle, France. 2 : IMEDEA CSIC UIB, Esporles, Spain. 3 : IGN, Observ Yebes, Yebes, Spain. 4 : CETMAR, Vigo, Spain. 5 : CNRM, Brest, France. |
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| Source | Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2014-03 , Vol. 41 , N. 5 , P. 1639-1643 | ||||||||||||||||||||||||||||||||
| DOI | 10.1002/2013GL059039 | ||||||||||||||||||||||||||||||||
| WOS© Times Cited | 23 | ||||||||||||||||||||||||||||||||
| Keyword(s) | sea level, climate change, land motion, geodesy, tide gauge, GPS | ||||||||||||||||||||||||||||||||
| Abstract | Tide gauge records are the primary source of sea level information over multidecadal to century timescales. A critical issue in using this type of data to determine global climate-related contributions to sea level change concerns the vertical motion of the land upon which the gauges are grounded. Here we use observations from the Global Positioning System for the correction of this vertical land motion. As a result, the spatial coherence in the rates of sea level change during the twentieth century is highlighted at the local and the regional scales, ultimately revealing a clearly distinct behavior between the Northern and the Southern Hemispheres with values of 2.0mm/yr and 1.1mm/yr, respectively. Our findings challenge the widely accepted value of global sea level rise for the twentieth century. | ||||||||||||||||||||||||||||||||
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