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Oceanographic results from analysis of ERS-1 altimetryLarge scale dynamic ocean topography and its variations were observed using ERS-1 radar altimeter measurements. The altimeter measurements analyzed are primarily from the ESA ocean product (OPR02) and from the Interim Geophysical Data Records (IGDR) generated by NOAA from the fast delivery (FD) data during the ERS-1 35 day repeat orbit phase. The precise orbits used for the dynamic topography solution are computed using dual satellite crossover measurements from ERS-1 and TOPEX (Topology Ocean Experiment)/Poseidon (T/P) as additional tracking data, and using improved models and constants which are consistent with T/P. Analysis of the ERS-1 dynamic topography solution indicates agreement with the T/P solution at the 5 cm root mean square level, with regional differences as large as 15 cm tide gauges at the 8 to 9 cm level. There are differences between the ERS-1 OPR02 and IGDR determined dynamic topography solutions on the order of 5 cm root mean square. Mesoscale oceanic variability time series obtained using collinear analysis of the ERS-1 altimeter data show good qualitative agreement when compared with the T/P results.
Document ID
Document Type
Conference Paper
Tapley, B. D.
(Texas Univ. Austin, TX, United States)
Shum, C. K.
(Texas Univ. Austin, TX, United States)
Chambers, D. P.
(Texas Univ. Austin, TX, United States)
Peterson, G. E.
(Texas Univ. Austin, TX, United States)
Ries, J. C.
(Texas Univ. Austin, TX, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1994
Publication Information
Publication: ESA, Proceedings of the Second ERS-1 Symposium on Space at the Service of Our Environment, Volume 1
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