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

Authors

Marcio L. Vianna, San Jose dos Campos
Viviane V. Menezes, San Jose dos Campos
D. Chambers, University of TexasFollow

Document Type

Article

Publication Date

12-22-2007

Keywords

MDT‐GRACE, South Atlantic, SSA filter

Digital Object Identifier (DOI)

https://doi.org/10.1029/2007GL031912

Abstract

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.

Rights Information

Terms of use for work posted in Scholar Commons.

Was this content written or created while at USF?

No

Citation / Publisher Attribution

Geophysical Research Letters, v. 34, issue 24, art. L24604

Copyright 2007 by the American Geophysical Union

Scholar Commons Citation

Vianna, Marcio L.; Menezes, Viviane V.; and Chambers, D., "A High Resolution Satellite-only GRACE-based Mean Dynamic Topography of the South Atlantic Ocean" (2007). Marine Science Faculty Publications. 198.
https://digitalcommons.usf.edu/msc_facpub/198