The extension of the Radon Transform to the 3-D case and its application to the study of Rossby waves from satellite data

23/10/97


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Table of Contents

The extension of the Radon Transform to the 3-D case and its application to the study of Rossby waves from satellite data

Outline

Rossby waves in the oceans

Why are these waves interesting?

Example: El Niño 1983

Example: El Niño 1983

Example: El Niño 1983

How can we observe Rossby waves?

Satellite Altimetry

Example of altimeter ground coverage

Longitude-time plots of Sea Surface Heights

Example of a longitude-time plot

Some scientific results

The 2-D Radon Transform

Use of the 2-D RT to estimate the wave speed

The MATLAB built-in 2-D Radon

Example of RT of a l/t plot

Example of speed estimation

Study at different latitudes

What’s the fuss?

The cuboid of data

Generalizing to 3-D....

3-D Radon Transform

Just a few lines of code....

Some results: directional study of Rossby waves

Some results: Rossby wave speed

Authors: P. Challenor, P. Cipollini, D. Cromwell, G. Quartly

Email: cipo@soc.soton.ac.uk

Home Page: http://www.soc.soton.ac.uk/JRD/SAT/

Other information:
An extension of the Radon transform to study Rossby wave propagation in satellite altimeter data