哈尔滨太平国际机场近20a沙尘天气特征统计

本文应用2000-2019年哈尔滨太平国际机场地面观测资料,对近20 a沙尘天气的气候特征进行统计和分析。结果表明:近20 a,哈尔滨太平机场的沙尘日数呈不明显上升趋势,增加速率不足0.1 d/a;春季为沙尘天气出现频率最高的季节,其次为秋季;沙尘天气发生的峰值时间是在07-14时,结束的峰值时间是在12-19时;沙尘天气的持续时间越长,出现的频率越低,80%的沙尘过程持续时间不足12 h;沙暴、尘暴天气的出现频率占比4.15%,均发生在春季,多在中午至傍晚时段生消。

Statistics of Dust Weather Characteristics of Harbin Taiping International Airport in Recent 20 Years

Based on the ground observation data of Harbin Taiping International Airport from 2000 to 2019,the climatic characteristics of dust weather in recent 20 years are analyzed.The results show that in the past 20 years,the number of dust days in Harbin Taiping Airport has not increased significantly,and the increase rate is less than 0.1 d/a.Spring is the season with the highest frequency of dust weather,followed by autumn.The peak time of dust weather is from 07:00 to 14:00,and the end peak time is from 12:00 to 19:00.The longer the duration of dust weather is,the lower the frequency of occurrence is.80%of the dust process lasts less than 12 hours.The occurrence frequency of sandstorm and dust storm accounts for 4.15%,both of which occur in spring,mostly in the period from noon to evening.