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| Titel |
A new assessment of the error budget of global mean sea level rate estimated by satellite altimetry over 1993–2008 |
| VerfasserIn |
M. Ablain, A. Cazenave, G. Valladeau, S. Guinehut |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1812-0784
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| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 5, no. 2 ; Nr. 5, no. 2 (2009-06-17), S.193-201 |
| Datensatznummer |
250002423
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| Publikation (Nr.) |
 copernicus.org/os-5-193-2009.pdf |
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| Zusammenfassung |
| A new error budget assessment of the global Mean Sea Level (MSL) determined
by TOPEX/Poseidon and Jason-1 altimeter satellites between January 1993 and
June 2008 is presented using last altimeter standards. We discuss all
potential errors affecting the calculation of the global MSL rate. We also
compare altimetry-based sea level with tide gauge measurements over the
altimetric period. Applying a statistical approach, this allows us to
provide a realistic error budget of the MSL rise measured by satellite
altimetry. These new calculations highlight a reduction in the rate of sea
level rise since 2005, by ~2 mm/yr. This represents a 60% reduction
compared to the 3.3 mm/yr sea level rise (glacial isostatic adjustment
correction applied) measured between 1993 and 2005. Since November 2005, MSL
is accurately measured by a single satellite, Jason-1. However the error
analysis performed here indicates that the recent reduction in MSL rate is
real. |
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