ENG-1964 — Page 253

Hong Kong Year Books 香港年報 All

222

RESEARCH

Investigations were made into the accuracy of upper wind forecasts prepared at the Royal Observatory and also into the accuracy of prognostic upper-air charts prepared by various methods. Mean upper wind charts of south-east Asia were prepared for different levels.

Variations of sea temperature and also the relation between wave height and wind force were studied. Some progress was made in the forecasting of typhoon movement and operational tests of various objective methods continued.

The energy distribution of typhoon gusts of different periods was investigated and an electronic computer was used to establish a relationship between wind maxima, averaged over different intervals of time.

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