廊坊地区极大风速时空变化特征及影响因素分析  

Analysis on Characteristics of Temporal and Spatial Changes and Influence Factors of Maximum Wind Speed in Langfang Region

作　　者：高宇俊 耿雪莹 杨帅 刘伯华 侯奇奇 GAO Yujun;GENG Xueying;YANG Shuai;LIU Bohua;HOU Qiqi(Langfang Meteorological Bureau,Hebei Langfang 065000,China)

机构地区：[1]廊坊市气象局,河北廊坊065000

出　　处：《河北师范大学学报（自然科学版）》2023年第1期99-108,共10页Journal of Hebei Normal University：Natural Science

基　　金：河北省省级科技计划资助项目(18225346);廊坊市科技局项目(2019013070);廊坊市气象局气象科研项目(202107)。

摘　　要：以1981—2020年廊坊地区逐日大风气象观测资料为基础,采用阵风系数方法获取1981—2020年极大风速序列,对廊坊地区极大风速变化特征和影响因素进行分析.结果表明:廊坊地区年平均极大风速为21.67m/s,近40a,廊坊地区年平均极大风速呈波动下降趋势,年平均极大风速显著减小,廊坊地区月平均极大风速整体呈春季高、冬季和夏季次之、秋季最低的变化特征;从空间分布看,不同重现期的极大风速和近40a极大风速极值分布均呈南部高、中北部次高、中西部最低的分布特征,但近5a,极大风速高值则主要出现在廊坊市区、霸州市、香河县等中部地区;廊坊地区极大风速的变化与气温具有负相关关系,气候变暖可以认为是极大风速减小的影响因素.Based on the daily gale weather observation data in Langfang region from 1981 to 2020,gust coefficient method was used to obtain the maximum wind speed sequence from 1981 to 2020,the characteristics and influence factors of maximum wind speed in Langfang region were analyzed.The results showed that the annual average maximum wind speed in Langfang region was 21.67 m/s.In the past 40 years,the annual average maximum wind speed in Langfang region showed fluctuating downward trend.The annual average maximum wind speed decreased significantly.The monthly average maximum wind speed in Langfang region showed the change characteristics of the highest in spring,followed by winter and summer and the lowest in autumn.From the perspective of spatial distribution,the distribution of maximum wind speed in different recurrence periods and maximum wind speed extremes in the past 40 years were the highest in the south,followed by central and northern regions,and the lowest in central and western regions.But in the past five years,extremely high wind speed mainly occurred in central areas such as Langfang city,Bazhou city,and Xianghe county.The change of maximum wind speed in Langfang region was negatively correlated with air temperature,and climate warming may be the influence factor of maximum wind speed decrease.

关 键 词：极大风速 阵风系数 MANN-KENDALL检验 重现期 气候倾斜率 

分 类 号：P425[天文地球—大气科学及气象学] P429