Introduction continued

The T/P altimeter data were processed using the JGM-3 orbit. The following corrections were applied: oscillator-drift, electromagnetic bias, ionospheric, wet and dry tropospheric, inverse-barometer, and tidal (including ocean from CSR3.0 model, solid-earth, loading, and pole-tide). Because the geoid is not known accurately enough, we use only the anomalies in the resulting sea-surface height (SSH) data, after subtracting the Nov 1992 --- Nov 1995 (Cycles 6--116) mean. The T/P spatial sampling interval is about 9.9 days in time and 6.2 km along-track in space.

The current meters were moored mid-way between the IES's and maintained for the same two-year period for which the URI IES's were deployed. Each mooring had 1-4 current meters at nominal pressure levels of 600, 1400, 2800, and 4500 dbar. The current-meter data were low-pass filtered using the tide-elimination filter described at the beginning of section 4.5 in Godin (1972), followed by the same 120-hour filter that was applied to the IES data. The current meters were equipped with both temperature and (in most instances) pressure sensors.

The hydrographic data consisted of 889 profiles, approximately half were from CTD's and half from XBT's, mostly taken during the two-year URI IES deployment period. These data underwent extensive quality-control checks. Salinity values for the XBT casts were inferred from the average temperature--salinity relationship of the immediately preceding and immediately following CTD cast taken at the same location.

NEXT: Dynamic Heights

Abstract

Introduction

Dynamic Heights

Velocities

Transports

Conclusions

References

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