南京大学学报（自然科学版）2026，Vol.62Issue(2)：249-257,9.DOI:10.13232/j.cnki.jnju.2026.02.007
台风"山竹"过程中阵风因子特征
Characteristics of gust factors during typhoon Mangkhut
摘要
Abstract
The gust factor,an indicator of gust intensity,is widely used to analyze gust characteristics during typhoon events.This study analyzes the gust factors during typhoon Mangkhut using 13-level two-dimensional ultrasonic wind data obtained from the Shenzhen Meteorological Gradient Tower.The results show that the gust factor primarily ranges from 1 to 1.75,and the gust intensity gradually decreases with increasing height.The gust factor is larger during the severe typhoon due to the low mean wind speed resulting from the typhoon center being located at a considerable distance from the tower,decreases significantly with the approach of landfall,and increases again after transitioning into a tropical storm.The gust factor decreases with increasing wind speed and approaches 1 under high wind speed conditions.It is also negatively correlated with the 10-minute mean wind speed across layers,with stronger correlations within the same layer.The gust factor is more pronounced in the lower layers and under low wind speed conditions.The gust factor is lower under the dominant wind directions(northerly and easterly),but higher under southerly and westerly winds,despite their lower frequency.In the wind direction range of 157.5° to 292.5°,the values in the lower layers account for approximately 55%of the total.At higher gust factor values,the wind direction shifts noticeably at 10 m and 20 m.关键词
阵风因子/台风"山竹"/深圳梯度塔/风向特征Key words
gust factor/typhoon Mangkhut/the Shenzhen Meteorological Gradient Tower/wind direction characteristics分类
天文与地球科学引用本文复制引用
李丹,张宁,贾恒墨,胡冰雁,开塞尔·克热米拉..台风"山竹"过程中阵风因子特征[J].南京大学学报（自然科学版）,2026,62(2):249-257,9.基金项目
国家自然科学基金(42275065) （42275065）
