Physics – Geophysics
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3424604v&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 24, CiteID L24604
Physics
Geophysics
9
Oceanography: Physical: General Circulation (1218, 1222), Mathematical Geophysics: Spatial Analysis (0500), Oceanography: Physical: Currents, Oceanography: Physical: Western Boundary Currents, Oceanography: Physical: Fronts And Jets
Scientific paper
A new filtering method based on Singular Spectrum Analysis has been devised to extract high resolution (0.25° × 0.25° grid) satellite-only Mean Dynamic Ocean Topography(MDT) constructed by differencing of the GGM02 GRACE Gravity Model from the GSFCMSS00 Mean Sea Surface. This data-adaptive interpolation-type filter is adequate for the finite domain MDT processing since it minimizes smoothing and does not lose boundary points. It is applied to the computation of two new MDTs and MDT-derived mean geostrophic circulation maps of the South Atlantic region from 15°N to 50°S. Advantages of these new maps are clarified when contrasted with the Rio-2005, Chambers-Zlotnicki-2004 and ADCP cruise transect data.
Chambers Don P.
Menezes Viviane V.
Vianna Marcio L.
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