Abstract
The sea level change is a crucial indicator of our climate. The spatial sampling offered by satellite altimetry and its continuity during the last 18 years are major assets to provide an improved vision of the sea level changes. In this paper, we analyze the University of Colorado database of sea level time series to determine the trends for 18 large ocean regions by means of the automatic trend extraction approach in the framework of the singular spectrum analysis technique. Our global sea level trend estimate of 3.19 mm/year for the period from 1993 to 2010 is comparable with the 3.20-mm/year sea level rise since 1993 calculated by AVISO Altimetry. However, the trends from the different ocean regions show dissimilar patterns. The major contributions to the global sea level rise during 1993–2010 are from the Indian Ocean (3.78 ± 0.08 mm/year).
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Abbreviations
- AVISO:
-
Archivage Validation et Interprétation des données des Satellites Océanographiques
- IPCC:
-
Intergovernmental Panel on Climate Change
- GDR:
-
Geophysical Data Records
- KNMI:
-
Royal Netherlands Meteorological Institute
- MGDR:
-
Merged Geophysical Data Record
- TAR WG:
-
Third Assessment Report Work Group
- TOPEX:
-
Ocean Topography Experiment
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Acknowledgments
The authors are enormously grateful to Theodore Alexandrov for providing the AutoSSA computer program. The authors are also grateful to Colorado Center for Astrodynamics Research of the University of Colorado–Boulder for providing the global and regional sea level time series. The authors greatly thank the anonymous reviewers for their valuable and constructive comments.
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Taibi, H., Kahlouche, S., Haddad, M. et al. Trends in global and regional sea level from satellite altimetry within the framework of auto-SSA. Arab J Geosci 6, 4575–4584 (2013). https://doi.org/10.1007/s12517-012-0776-2
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DOI: https://doi.org/10.1007/s12517-012-0776-2