Publication Date:
2020-02-12
Description:
This paper deals with the reconstruction of sea level anomalies using altimetry and GPS-corrected tide gauge data. In the first part of this paper, the reconstruction algorithm used ("Optimal interpolation" (OI (C)) is investigated in more detail. It is found that it shows a strong element of stochasticity. The reconstruction is strongly dependent on the relative spatial position of the tide gauges to the empirical orthogonal Functions (EOF) used in the reconstruction. In the second part of the paper, a reconstruction of global sea level anomalies for the period of 1970-2001 is performed. The tide gauges used for this purpose are corrected for land movement using vertical GPS trends. Also, a a smoothing algorithm is introduced which helps to fill the errors resulting from gaps in the tide gauge records.
Keywords:
550 - Earth sciences
Type:
info:eu-repo/semantics/doctoralThesis
