| Abstract | The Froude number (Fr) statistics using both ECMWF data and meteorological station data are presented for northerly cold surges invading the coast of southern China and Hong Kong, with a view to developing a reliable predictor for cold surges passing over the Nanling Range; the arrival of such surges are defined by a temperature drop 3 degree Celsius or more, or prevailing wind shifting to the range 330 degree to 030 degree, as measured by a station south of the Nanling Range, for example, Hong Kong. |
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