This week 50 years ago

 作者:阙漂     |      日期:2019-03-01 06:20:02
Is it going to rain? THE idea of calculating the forthcoming weather directly from complicated atmospheric equations has long been the dream of meteorologists. This only became feasible a few years ago as a result of routine measurements of conditions in the upper air, the realisation that answers might be obtained by using models of the atmosphere and, above all, the advent of high-speed electronic computing machines which allow the several million numerical operations involved in a 24-hour forecast to be performed in a reasonable time. Maps are drawn showing the distribution of atmospheric pressure, one near the Earth’s surface,