莫索湾1961-2010年大风特征分析  

Characteristics of strong wind in Mosuowan from 1961 to 2010

作　　者：蒲云锦 刘清芳 郭襄 

机构地区：[1]新疆石河子气象局,石河子832000 [2]新疆塔城气象局,塔城834700 [3]新疆沙湾气象局,沙湾832100

出　　处：《干旱区资源与环境》2012年第10期24-27,共4页Journal of Arid Land Resources and Environment

基　　金：公益性行业(气象)科研专项(GYHY201006012);新疆气象局气象科技研究课题(201015)共同资助

摘　　要：对1961-2010年莫索湾大风观测资料进行统计分析,结果表明:近50年来,莫索湾大风发生频数总体呈下降趋势,下降次数为0.0187次/年。4-7月是莫索湾大风频发期,11月到次年3月没有出现过大风。莫索湾大风的日变化特点是:大风多出现在13:00以后,至19:00左右减弱,16:00-18:00是大风出现次数最多的时段,并且风向以西北风居多。莫索湾大风的天气特征主要有三种:冷锋过境型大风、动量下传型大风和热力对流型大风,其中以冷锋过境型大风出现次数居多,约占大风总次数的83%。最后提到大风预报的着眼点和防御大风的对策措施。The statistical analysis of strong wind observations in Mosuowan during 1961-2010 demostrated that over the past 50 years,the strong wind frequency showed a declining trend in Mosuowan,with the delining rate of 0.0187 times / year.The number of strong winds were higher in Mosuowan during April to July.There was no strong wind during November to March.Diurnal variation of strong wind occurrences was more in the afternoon than in the morning in Mosuowan.Most of the wind accurred at 16：00-18： 00pm.The strong wind direction was the northwest mostly in Mosuowan.There were three main features for strong windy weather in Mosuowan： cold front crossing strong wind,momentum transfer under strong wind and thermal convection model strong wind.Cold front crossing strong wind occurred mostly,taking about 83% of the total strong wind.

关 键 词：大风 统计分析 变化特征 莫索湾 

分 类 号：P425[天文地球—大气科学及气象学]