大理机场风特征分析及对飞行的影响

Analysis of the wind characteristics of Dali airport and its influence on flight

利用大理机场近5 a自动观测系统资料,对平均风向、风速以及大风进行统计分析,结果发现:大理机场全年盛行偏南风,风向夜间到上午为东南风,午后风向逐渐转为西南风,傍晚转为东南风;大理机场年平均风速为5.4 m/s,白天风速大于夜间,且夜间风速稳定;大理机场大风天气主要出现在每年11月—次年4月,出现时间多集中在下午06—11UTC,白天多于夜间,起风时间一般为中午03UTC以后,大风风向为西南风;大理机场干季受大风、颠簸和低空风切变影响较大。

according to the data of the automatic observation system of Dali airport in the past five years, the average wind direction, wind speed and wind were statistically analyzed. The results show that: the prevailing southerly wind in Dali airport was throughout the year. The average annual wind speed in Dali airport is 5.4 m/s, which is greater than that at night in the daytime and stable at night. The wind weather in Dali airport mainly occurs from November to April of the next year, mainly from 06 to 11UTC in the afternoon, but more often in the day than at night. The dry season at Dali airport is significantly affected by high winds, turbulence and low altitude wind shear.