caa a22 4500 475737709 CHVBK 20180406123451.0 cr unu---uuuuu 170329e20000701xx s 000 0 eng 10.1007/s001900000101 doi (NATIONALLICENCE)springer-10.1007/s001900000101 Ocean tides from T/P, ERS-1, and GEOSAT altimetry [Elektronische Daten] [A. J. E. Smith, B. A. C. Ambrosius, K. F. Wakker] Abstract.:  Aliasing of the diurnal and semi-diurnal tides is a major problem when estimating the ocean tides from satellite altimetry. As a result of aliasing, the tides become correlated and many years of altimeter observations may be needed to seperate them. For the three major satellite altimetry missions to date i.e., GEOSAT, ERS-1, and TOPEX/POSEIDON (T/P), the alias periods as well as the Rayleigh periods over which the tides decorrelate can be identified. Especially in case of GEOSAT and ERS-1, severe correlation problems arise. However, it is shown by means of covariance analyses that the tidal phase advance differences on crossing satellite groundtracks can significantly reduce the correlations among the diurnal and semi-diurnal tides and among these tides and the seasonal cycles of ocean variability. Therefore, it has been attempted to solve a multi-satellite response tidal solution for the diurnal and semi-diurnal bands from a total of 7 years of altimetry. Unfortunately, it could be shown that the GEOSAT and ERS-1 orbit errors are too large to improve a 3-year T/P tidal solution with about 2 years of GEOSAT and 2 years of ERS-1 altimeter observations. However, these results are preliminary and it is expected that more accurate orbits, which have become available recently for ERS-1, and additional altimeter data from ERS-2 and the GEOSAT Follow-On (GFO) should lead to an improved T/P tidal model. Springer-Verlag Berlin Heidelberg, 2000 Key words: Ocean tides nationallicence Altimetry nationallicence T/P nationallicence ERS-1 nationallicence GEOSAT nationallicence Smith A. J. E. Delft Institute for Earth-Oriented Space Research, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands e-mail: arthur.smith@lr.tudelft.nl, NL aut Ambrosius B. A. C. Delft Institute for Earth-Oriented Space Research, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands e-mail: arthur.smith@lr.tudelft.nl, NL aut Wakker K. F. Delft Institute for Earth-Oriented Space Research, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands e-mail: arthur.smith@lr.tudelft.nl, NL aut https://doi.org/10.1007/s001900000101 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s001900000101 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Smith A. J. E. Delft Institute for Earth-Oriented Space Research, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands e-mail: arthur.smith@lr.tudelft.nl, NL aut NATIONALLICENCE 700 1- Ambrosius B. A. C. Delft Institute for Earth-Oriented Space Research, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands e-mail: arthur.smith@lr.tudelft.nl, NL aut NATIONALLICENCE 700 1- Wakker K. F. Delft Institute for Earth-Oriented Space Research, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands e-mail: arthur.smith@lr.tudelft.nl, NL aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer