Evaluation of the Global Mean Sea Level Budget between 1993 and 2014 |
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| Authors: | Don P Chambers Anny Cazenave Nicolas Champollion Habib Dieng William Llovel Rene Forsberg Karina von Schuckmann Yoshihide Wada |
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| Institution: | 1.College of Marine Science,University of South Florida,St. Petersburg,USA;2.Laboratoire d’Etudes en Géophysique et Océanographie Spatiales (LEGOS),Toulouse Cedex 9,France;3.International Space Science Institute (ISSI),Bern,Switzerland;4.Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS), URA1875,Toulouse Cedex 1,France;5.Division of Geodynamics,Technical University of Denmark,Lyngby,Denmark;6.MERCATOR-Ocean,Ramonville-Saint-Agne,France;7.Department of Physical Geography,Utrecht University,Utrecht,The Netherlands |
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| Abstract: | Evaluating global mean sea level (GMSL) in terms of its components—mass and steric—is useful for both quantifying the accuracy of the measurements and understanding the processes that contribute to GMSL rise. In this paper, we review the GMSL budget over two periods—1993 to 2014 and 2005 to 2014—using multiple data sets of both total GMSL and the components (mass and steric). In addition to comparing linear trends, we also compare the level of agreement of the time series. For the longer period (1993–2014), we find closure in terms of the long-term trend but not for year-to-year variations, consistent with other studies. This is due to the lack of sufficient estimates of the amount of natural water mass cycling between the oceans and hydrosphere. For the more recent period (2005–2014), we find closure in both the long-term trend and for month-to-month variations. This is also consistent with previous studies. |
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