丽江机场地面风场特征及气象保障分析

Analysis on Surface Wind Field Characteristics and Meteorological Safeguard Service of Lijiang Airport

本文利用丽江机场2013~2015年自动气象站地面风场资料,分析了地面风场变化特征,并就地面风的飞行气象保障进行了总结。结果表明：丽江机场各季盛行偏西南风,且风速最大;东北风频率较大,常造成顺风超标;白天盛行西南风,夜晚和早晨盛行东北风;大风主要出现在1~4月12~18时;风切变有93%出现在冬春季。

In this paper,the auto-observational surface wind data at Lijiang airport from 2013 to 2015 was used to analysis the variation of surface wind field statistically,and the influence of surface wind field to the flight was also summarized. The results show that Lijiang Airport prevailing southwest winds throughout the year with the maximum wind velocity and the Northeasterly wind is being of greater frequency which often resulting in excessive down wind. The dominant wind direction is southwest winds at daytime while it is northeast winds at night; the gale mainly occurred from 12 p. m to 18 p. m in January-April and there are 93% wind shear occurred in winter and spring.