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2. What can we measure? Satellite height
Significant wave height
Wind Speed
3. Altimeter Schematic-I
4. Altimeter Schematic-II
13. Aliasing The altimeter measures sea level once every repeat period (except at cross-over points)
If we have a high frequency signal which we measure at a low frequency we get aliasing
Because of the way the altimeter lays down its tracks these aliased signals appear to move
14. Aliasing Periods
16. Gravity anomalies from altimetry
22. Tides
23. Rossby Waves
24. Meso-scale variability