Effect of topography and surface friction discontinuity on tropical cyclone tracks

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• Prof. Johny Chan, School of Energy and Environment, City University of Hong Kong
• Tuesday 17 November 2015, 14:00-15:00
• British Antarctic Survey, Room 330B.

If you have a question about this talk, please contact Dr. Pranab Deb.

If external to BAS, please contact the organiser for building access.

In this talk, the basic physics of tropical cyclone motion will first be reviewed. The major part of the talk will focus on how such movement is modified when a tropical cyclone encounters a surface discontinuity such as when it is about to make landfall. For a flat land that has a much higher friction than that of the ocean, the cyclone is “attracted” to the region of the highest roughness. In the presence of topography, the cyclone can be deflected substantially with sometimes a looping motion. The extent to which such changes occur depend on the proximity of the cyclone to the topography, the size of the cyclone and the background environmental flow.

This talk is part of the British Antarctic Survey series.

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