NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Global-scale sea surface variability from combined altimetric and tide gauge measurementsBy correcting Geosat altimetric data for a set of line frequencies, and then doing a heavy average in space and time, a set of global maps of sea surface variability is produced over time intervals ranging from three months to two years. These maps are demonstrated to be consistent with the global network of tide gauges and sets of maps incorporating those data into the altimetric estimates are also produced. Tide gauge records too fragmentary for computation of a two-year mean are employed by time-differencing them. An estimate of the global difference of sea level change over one year, on very large space scales, shows the effects of the 1987 El Nino. The spherical harmonic coefficients employed in the computations are then used to estimate the full three-dimensional frequency/wavenumber spectrum of surface circulation variability.
Document ID
19910063770
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Wunsch, Carl
(MIT Cambridge, MA, United States)
Date Acquired
August 14, 2013
Publication Date
August 15, 1991
Publication Information
Publication: Journal of Geophysical Research
Volume: 96
ISSN: 0148-0227
Subject Category
Oceanography
Accession Number
91A48393
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available