Publication details.

Paper Year: 2014 Author(s): G. Wöppelmann, M. Marcos, A. Santamaría-Gõmez, B. Martín-Míguez, M.-N. Bouin, M. Gravelle Title: Evidence for a differential sea level rise between hemispheres over the twentieth century Journal: GEOPHYSICAL RESEARCH LETTERS ISSN: 0094-8276 JCR Impact Factor: 4.196 Volume: 41 Pages: 1639-1643 D.O.I.: 10.1002/2013GL059039 Web: http://www.scopus.com/inward/record.url?eid=2-s2.0-84895094424&partnerID=40&md5=83e7c0e3f611f174828f013321cfc3aa 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 2.0 mm/yr and 1.1 mm/yr, respectively. Our findings challenge the widely accepted value of global sea level rise for the twentieth century. Key Points Detection of a spatial pattern between hemispheres in secular sea level rates Use of most advanced methods and data for studying secular trends in sea level Vertical land motion: An obstacle to detecting fingerprints in sea level change ©2014. American Geophysical Union. All Rights Reserved.

Related staff Marta Marcos Moreno