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Creator:: Schlax, Michael G. and Chelton, Dudley B.
Resource Type:: Article
Full Text:: /' •½x = •qbx- • •t. (3a) Table 2. Geosat Alias Periods and Three Longest Alias Wavelengths for the

Creator:: Chelton, Dudley B. and Schlax, Michael C.
Abstract:: A formalism is presented for quantifying the sampling error of an arbitrary linear estimate of a time-averaged quantity constructed from a time series of irregularly spaced observations at a fixed location. The method is applicable to any irregularly sampled time series; it is applied here to satellite observations of chlorophyll...
Resource Type:: Article
Full Text:: literature [e.g., JoUrnel and Huijbregts, 1978]. Let C(t) be the continuously time-varying process of in

Creator:: Arbic, Brian K., Scott, Robert B., Chelton, Dudley B., Richman, James G., and Shriver, Jay F.
Abstract:: This paper examines the effect of “stencil width” on surface ocean geostrophic velocity and vorticity estimated from differentiating gridded satellite altimeter sea surface height products. In oceanographic applications, the value of the first derivative at a central grid point is generally obtained by differencing the sea surface heights at adjacent...
Resource Type:: Article
Full Text:: Naval Research Laboratory Layered Ocean Model [Hurlburt and Thompson, 1980; Wallcraft et al., 2003

Creator:: Gaube, Peter, McGillicuddy, Dennis J., Jr., Chelton, Dudley B., Behrenfeld, Michael J., and Strutton, Peter G.
Abstract:: Eddies can influence biogeochemical cycles through a variety of mechanisms, including the excitation of vertical velocities and the horizontal advection of nutrients and ecosystems, both around the eddy periphery by rotational currents and by the trapping of fluid and subsequent transport by the eddy. In this study, we present an...
Resource Type:: Article
Full Text:: Storch and Zwiers, 1999], where qtð0:025;N�22Þ is the 2.5 percentage point of the Student’s t

Creator:: Schlax, Michael G. and Chelton, Dudley B.
Abstract:: Alias periods and wavelengths for the M2, S2, N2, K1, O1, and P1 tidal constituents are calculated for TOPEX/POSEIDON. Alias wavelengths calculated in previous studies are shown to be in error, and a correct method is presented. With the exception of the K1 constituent, all of these tidal aliases for...
Resource Type:: Article
Full Text:: longitude nodes. 24 •t At Ax ß I , , I , , I , a I • 9 12 15 18 Longitude Figure 1. Sampling

Creator:: Schlax, Michael G. and Chelton, Dudley B.
Abstract:: A simple statistic is derived for quantifying the potential for the aliasing of tidal errors in a given linear estimate of sea surface height constructed from altimeter data. The existence of M2 tidal constituent errors in Geosat data processed in the traditional way (i.e., with orbit errors removed using least...
Resource Type:: Article
Full Text:: h(x,y,t) denote the residual SSH after the usual instrumental, environmental, orbit height, and

Creator:: Chelton, Dudley B.
Abstract:: The wind speed and significant wave height (H1/3) dependencies of the sea state is in altimeter estimates of sea level, expressed in the form ∆hSSB=bH1/3, are examined from least squares analysis of 21 cycles of collinear TOPEX data. The bias coefficient b is found to increase in magnitude with increasing...
Resource Type:: Article
Full Text:: example, within this wind speed bin at location k can be expressed as (hmeas (t/i)) k -- -1 Nk(ui

Creator:: Risien, Craig M., Reason, C. J. C., Shillington, F. A., and Chelton, Dudley B.
Abstract:: Wind stress variability over the Benguela upwelling system is considered using 16 months (01 August 1999 to 29 November 2000) of satellite-derived QuikSCAT wind data. Variability is investigated using a type of artificial neural network, the self-organizing map (SOM), and a wavelet analysis. The SOM and wavelet analysis are applied...
Resource Type:: Article
Full Text:: . Hutchings, T. A. Probyn, H. N. Waldron, and W. T. Peterson (1992), Filaments and the Benguela Frontal zone

Creator:: Chelton, Dudley B.
Abstract:: In a recent paper, Sandwell and Agreen [1984; hereafter SA] presented figures of global seasonal wind speed and sea state as measured by the GEOS 3 satellite altimeter. Since that time, Chelton and McCabe [1985; hereafter CM] have found that problems exist in the algorithms used to retrieve wind speed...
Resource Type:: Article
Full Text:: . Sandwell, D. T., and R. W. Agreen, Seasonal variation in wind speed and sea state from global satellite

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