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RISThe Resolving Power of a Single Exact-Repeat Altimetric Satellite or a Coordinated Constellation of Satellites
Publisher: American Meteorological Society
Abstract: It is proved that the midpoint grid, which is composed of samples obtained at ground track locations midway between crossover points (thus a subset of the full sampling), has the same resolving power as the full set; that ...
Accuracy Assessment of Widely Used Orbit Error Approximations in Satellite Altimetry
Publisher: American Meteorological Society
Abstract: Orbit error simulations have shown that the orbit error can be assumed to be a slowly varying sine wave with a predominant wavelength comparable to the earth's circumference. Thus, one can derive analytically the error ...
How to Observe the Gyre to Global-Scale Variability in Satellite Altimetry: Signal Attenuation by Orbit Error Removal
Publisher: American Meteorological Society
Abstract: It is well known that the orbit error removal procedure in satellite altimetry also attenuates the oceanic signal. With the aim of devising observational strategies for the large-scale oceanic variability and deciphering ...
An Efficient Algorithm for Computing the Crossovers in Satellite Altimetry
Publisher: American Meteorological Society
Abstract: An efficient algorithm has been devised to compute the crossovers in satellite altimetry. The significance of the crossovers is twofold. First they are needed to perform the crossover adjustment to remove the orbit error. ...
Estimating the Basin-Scale Ocean Circulation from Satellite Altimetry. Part I Straightforward Spherical Harmonic Expansion
Publisher: American Meteorological Society
Abstract: Direct estimation of the absolute dynamic topography from satellite altimetry has been confined to the largest scales (basically the basin scale) owing to the fact that the signal-to-noise ratio i more unfavorable everywhere ...
On the Aliasing and Resolving Power of Sea Level Low-Pass Filtered onto a Regular Grid from Along-Track Altimeter Data of Uncoordinated Satellites: The Smoothing Strategy
Publisher: American Meteorological Society
Abstract: It is shown that smoothing (low-pass filtering) along-track altimeter data of uncoordinated satellites onto a regular space?time grid helps reduce the overall energy level of the aliasing from the aliasing levels of the ...
On the Spectral Ranges that Are Resolved by a Single Satellite in Exact-Repeat Sampling Mode
Publisher: American Meteorological Society
Abstract: The sampling problem for satellite data in exact-repeat orbit configuration is treated in this paper. Specifically, for exact-repeat satellite sampling, the author seeks to solve the problem equivalent to finding the Nyquist ...
Estimating the Surface Transport of Meandering Oceanic Jet Streams from Satellite Altimetry: Surface Transport Estimates for the Gulf Stream and Kuroshio Extension
Publisher: American Meteorological Society
Abstract: A method has been developed to detect the location, width maximum velocity, and suffice transport of a meandering oceanic jet stream from satellite altimetry. Ale method is based on a nonlinear least squares scheme, in ...
Aliasing of Sea Level Sampled by a Single Exact-Repeat Altimetric Satellite or a Coordinated Constellation of Satellites: Analytic Aliasing Formulas
Publisher: American Meteorological Society
Abstract: The aliasing problem for exact-repeat altimetric satellite sampling is solved analytically by the least squares method. To make the problem tractable, the latitudinal extent of the problem needs to be moderate for the ...
The Temporal Aliasing Formulas for the Tandem Mission of Jason-1 and TOPEX/Poseidon
Publisher: American Meteorological Society
Abstract: The temporal aliasing formulas are derived for the Tandem Mission of Jason-1 and the Ocean Topography Experiment (TOPEX)/Poseidon. Previously, aliasing formulas were derived for a single satellite or a constellation of ...