中国地区大范围定量降水数值预告图解法的试验
A TEST OF GRAPHICAL METHOD FOR QUANTITATIVE PRECIPITATION FORECASTING
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摘要: 本文引用两层模式,以数值预告图解法计算未来24小时后的500/1000mb厚度图、大范围垂直运动分布图.另外,还计算了500mb层以下的水汽水平输送量.并由此算出24小时降水量的分布图.文中并以1957年5月15—16日08时的我国地区情况为例,进行了实例计算.Abstract: A test of graphical method for quantitative forecast of precipitation is presented. First the saturation water vapor content below 500 mb is calculated from the forecasting value of 1000-500 mb thickness by two-layer model. Then the water vapor content is again predicted from the assumption of dq/dt=0.The difference between the two predicated values of water vapor content gives the forecasted precipitation (if the difference is positive).
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