用AMDAR资料分析两次强飞机积冰过程

利用常规气象资料和AMDAR(Aircraft Meteorological Data Relay,航空器气象资料中继)飞机气象资料,对2012年1月5日和23日贵阳机场飞机报告的两次强积冰个例过程进行了客观诊断分析.结果表明:“1·5”和“1·23”强积冰个例是静止锋形势下导致的,逆温层维持时间长,逆温层顶、逆温厚度基本不变且逆温强度有所增强;饱和冷云维持且冷云含水量不断加大,为强积冰的发生提供了有利的温度和水汽条件.AMDAR资料对于探空资料是有力的补充,能显示大气层结随时间细微的变化,为积冰预警预报服务提供参考.

Diagnostic Analysis of Two Severe Aircraft Icing Events Using AMDAR Data

Using the routine meteorological data and AMDAR aircraft meteorological data, the objective diagnostic analysis of two severe aircraft icing events happened on 5 and 23 January 2012 in Guiyang Airport is made. The results show that these two severe aircraft icing events were caused by a stationary front; an inversion layer maintained a long time; the inversion layer top and inversion thickness were essentially the same; temperature inversion strength was enhanced; saturated cold clouds maintained and cold cloud water content continued to increase; the low level inversion layer and saturated wet layer supplied favorable temperature and moisture conditions for severe icing. AMDAR data is a strong complement to radiosonde data, which can reveal the subtle changes of atmospheric stratification over time and provide references for icing warning and forecast service.