What can we learn from Global Altimetry/Hydrography comparisons?
Article first published online: 26 MAY 2006
Copyright 2006 by the American Geophysical Union.
Geophysical Research Letters
Volume 33, Issue 10, May 2006
How to Cite
2006), What can we learn from Global Altimetry/Hydrography comparisons? Geophys. Res. Lett., 33, L10604, doi:10.1029/2005GL025551., , and (
- Issue published online: 26 MAY 2006
- Article first published online: 26 MAY 2006
- Manuscript Accepted: 20 APR 2006
- Manuscript Revised: 30 MAR 2006
- Manuscript Received: 18 JAN 2006
 Differences and complementarities between altimeter and hydrographic data are studied to describe the sea level and ocean circulation variations in terms of steric and non-steric contributions. Altimeter sea level anomalies (SLA) and hydrographic dynamic height anomalies (DHA) agree remarkably well. They also reveal, however, systematic large-scale differences in several areas of the Pacific and Indian oceans that are related to a barotropic, Sverdrup-like, response of the ocean to wind forcing. In addition, the use of the two data sets provides a good estimation of the partition between barotropic and baroclinic modes needed for data synthesis or assimilation studies.