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Simulation and assimilation of satellite altimeter data at the oceanic mesoscale
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Demay, P. Robinson, A. R. |
| Copyright Year | 1984 |
| Description | An improved "objective analysis' technique is used along with an altimeter signal statistical model, an altimeter noise statistical model, an orbital model, and synoptic surface current maps in the POLYMODE-SDE area, to evaluate the performance of various observational strategies in catching the mesoscale variability at mid-latitudes. In particular, simulated repetitive nominal orbits of ERS-1, TOPEX, and SPOT/POSEIDON are examined. Results show the critical importance of existence of a subcycle, scanning in either direction. Moreover, long repeat cycles ( 20 days) and short cross-track distances ( 300 km) seem preferable, since they match mesoscale statistics. Another goal of the study is to prepare and discuss sea-surface height (SSH) assimilation in quasigeostrophic models. Restored SSH maps are shown to meet that purpose, if an efficient extrapolation method or deep in-situ data (floats) are used on the vertical to start and update the model. |
| File Size | 1096108 |
| Page Count | 20 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19840019244 |
| Archival Resource Key | ark:/13960/t2s51h70x |
| Language | English |
| Publisher Date | 1984-05-01 |
| Access Restriction | Open |
| Subject Keyword | Earth Resources And Remote Sensing Ocean Models Statistical Analysis Spot French Satellite Radio Altimeters Satellite Observation Mesoscale Phenomena Ers-1 Esa Satellite Topex Ocean Currents Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
