摘要
通过对2006年2月16日洛阳至广汉航线严重积冰过程诊断分析得到:青藏高原东部海拔3000～7500m之间强度较高的积冰生成与对流不稳定气象条件密切相关。K指数、上升速度和涡度平流等物理量可用于积冰的预报参考,大的K指数和K指数增长区、上升气流较强区域、正涡度平流区域与较强积冰区域对应。
Diagnostic analysis on a server icing case occurring on the route from Luoyang to Guanghan on February 16, 2006 is conducted. It shows that the severe aircraft icing has close relations to the convective instability meteorological conditions between 3000 and 7000 high above the sea level in the east of the Tibetan Plateau. Such physical variables as K index, upward velocity vorticity advection, etc. can be used for the reference of icing forecast. Larger K index or its increasing areas, strong upward flow and advection regions of positive vorticity all correspond to the severe aircraft icing.
出处
《气象》
CSCD
北大核心
2006年第12期66-71,共6页
Meteorological Monthly
