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本文主要利用T639资料、ECMWF数值预报、卫星云图、天气图分析及地形分析对中低空飞行时频繁出现积冰的原因进行分析,着重对T639数值预报、欧洲中心数值预报产品所含的温度、湿度、相对湿度在航路积冰预报中的释用进行了分析。结论得出欧洲中心预报24小时、48小时预报风场、湿度场和实况吻合很好。T639数值预报风场、湿度场、温度场12小时预报效果很好,和实况吻合。二者结合利用,对积冰预报效果更好。
In this paper, the causes of frequent ice accretions in mid-low-altitude flight are mainly analyzed by using T639 data, ECMWF numerical prediction, satellite image, weather image analysis and topographic analysis. Emphasis is placed on the numerical simulation of T639, the temperature and humidity , The relative humidity in the course of ice accretion forecast was analyzed. The conclusion is that the wind field predicted by the European Center in 24 hours and 48 hours is in good agreement with the actual situation. T639 numerical forecast wind field, humidity field, temperature field 12-hour forecast effect is very good, and live match. The combination of the two, the effect of ice forecasting better.