白鹤滩水电站坝区灾害性大风特征分析  

Analysis of Characteristics of Catastrophic Strong Winds in the Dam Area of Baihetan Hydropower Station

作　　者：邹琪美 吕俊杰 陈文龙 巫前文 边茜 姜艳 唐毓玲 Zou Qi-mei(Liangshan Meteorological Bureau,Liangshan,Sichuan 615000)

机构地区：[1]凉山州气象局,四川凉山615000

出　　处：《农业灾害研究》2023年第12期323-325,共3页Journal of Agricultural Catastrophology

摘　　要：白鹤滩水电站地处我国地势第二级阶梯与第一级阶梯交界处横断山脉,地形复杂。受多种天气系统影响,加之特殊复杂的下垫面,大风天气频繁,平均每年发生7级以上大风日数达235 d,占全年总日数的64.2%。分别从时间、空间和气候变化方面分析坝区新田自动站气象资料、NCEP格点资料大风变化规律,具体分析了9级以上各级大风个例特征、瞬时风速、10min最大风速持续时间、坝区9级以上不同等级风速持续时间等大风预报指标,旨在进一步完善9级以上灾害性大风的预报方法,提高电站灾害性大风预警预报气象服务水平。Baihetan Hydropower Station was located in the Hengduan Mountains at the junction of the second step and the first step in China,and the terrain was complex.Affected by a variety of weather systems,coupled with the special complex underlying surface,frequent gale weather,the average number of gale days above 7 reached 235 d,accounting for 64.2%of the annual total number of days.Respectively from the aspects of time,space and climate change analysis dam xinda automatic station meteorological data,NCEP grid data wind change law,analyzed the level above 9 wind individual characteristics,instantaneous wind speed,10 min maximum wind speed duration,dam level 9 different wind speed duration of wind forecast indicators specifically,aims to further improve the level 9 above severe wind forecast method,improve the level of power station severe gale warning forecast meteorological services.

关 键 词：斜压锋生型 低层暖平流强迫型 高层冷平流强迫型 准正压型 

分 类 号：P425.61[天文地球—大气科学及气象学]