About 150 tonnes of polypropylene pellets spilled into the sea after typhoon Vincente, which hit Hong Kong on 23 July, swept six shipping containers of them off the deck of a freighter causing great concern in the local community. Prof. Pan Jiayi at the Institute of Space and Earth Information Science (ISEIS) has made use of a newly developed marine environment system to assist the clean-up operation. By predicting the speed and direction of currents and waves in the surrounding sea area of Hong Kong, Professor Pan has pointed out the present and predicted locations of the pellets. ISEIS has sent the data to the Hong Kong Observatory and the Marine Department to support the clean-up.

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