摘要
为了通过多种方法研究恩施机场年平均能见度的突变现象,文章利用该机场1997年1月至2023年12月能见度的观测资料,计算出每年的平均能见度值。使用滑动t检验、Cramer's法、Yamamoto法、Mann Kendall法对能见度突变进行检测,并做对比分析。结果表明:在所使用的4种检测方法中,Mann Kendall法能较好地确定能见度的突变时间,且操作简单;其他方法准确率欠佳,且需要反复选择子序列长度,缺乏便捷性。
In order to study the sudden change phenomenon of annual average visibility at Enshi Airport using various methods,the observation data of visibility from January 1997 to December 2023 at Enshi Airport were used to calculate the average visibility value for each year.Use sliding t test,Cramer’s method,Yamamoto method,and Mann Kendall method to detect sudden changes in visibility and conduct comparative analysis.The results showed that among the four detection methods used,the Mann Kendall method could calculate the sudden change time of visibility well and was easy to operate.Other methods have poor accuracy and require repeated selection of subsequence lengths,lacking convenience.
作者
向松林
郭鸿运
Xiang Songlin;Guo Hongyun(Enshi Air Traffic Control Station,Hubei Airport Group Aviation Service Co.,Ltd.,Enshi 445000)
出处
《气象水文海洋仪器》
2025年第4期102-104,共3页
Meteorological,Hydrological and Marine Instruments
基金
山东省气象防灾减灾重点实验室牵头项目“阳谷‘耶果星’苹果气候品质评价及服务应用”(2024SDJC26)资助。
