A High Resolution Satellite-only GRACE-based Mean Dynamic Topography of the South Atlantic Ocean

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 interpola...

Full description

Bibliographic Details
Main Authors: Vianna, Marcio L., Menezes, Viviane V., Chambers, D.
Format: Article in Journal/Newspaper
Language:unknown
Published: Digital Commons @ University of South Florida 2007
Subjects:
MDT‐GRACE
South Atlantic
SSA filter
Life Sciences
Marine Biology
South Atlantic Ocean
Online Access:https://digitalcommons.usf.edu/msc_facpub/198
https://digitalcommons.usf.edu/cgi/viewcontent.cgi?article=1197&context=msc_facpub
Description
Summary: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.

Similar Items