青藏高原东北部地面风时空分布特征研究  

Temporal and Spatial Distribution of Surface Wind in the Region of Northeast Tibetan Plateau

作　　者：姜莹莹[1,2] 鄂崇毅[1,2] 侯光良[1,2] 孙永娟[3] 李凡[1,2] 袁杰[1,2] 

机构地区：[1]青海师范大学生命与地理科学学院,青海西宁810008 [2]青海师范大学青海省自然地理与环境过程重点实验室,青海西宁810008 [3]中国科学院青海盐湖研究所,青海西宁810008

出　　处：《青海师范大学学报（自然科学版）》2015年第1期62-70,共9页Journal of Qinghai Normal University(Natural Science Edition)

基　　金：国家自然基金项目资助(编号:41361047);国家自然科学基金项目(编号:41161018);青海省自然科学基金面上项目资助(2013-Z-914)

摘　　要：青藏高原东北部地区对全球变化异常敏感,系统研究该区地面风时空分布特征对理解青藏高原乃至北半球的大气环流演变具有重要意义.本文通过分析青藏高原东北部20个气象台站1982~2011年的年、季平均风速和年、季平均最大风速,2004~2011年大风日数、极大风以及最大风的风向、风频发现:(1)青藏高原东北部年平均风速和年平均最大风速总体呈下降趋势,春季的平均风速和平均最大风速在四季中最大.(2)2004~2011各台站累计大风(17m/s)日数总体呈上升趋势,2010年达到一个极大值;托勒、野牛沟、冷湖3台站大风较多,冷湖、茫崖、刚察、兴海次之,海拔较低的西宁最少;台站春季多大风.(3)各个台站极大风速的风向和最大风速的风向较为一致;青藏高原东北部总体上风向可分为四种类型:WNW,W,WNW、NW,总体以偏西风为主.In the northeast of Tibet plateau is an Unusually sensitive region to global change, systemtic research the factors of wind in space and time in understanding the Tibet plateau even to northern hemi- sphere atmospheric circulation has important theoretical significance. We have calculated the year and sea- son＇s average wind speed and the year and season＇s maximum wind speed from 1982 to 2011 of northeast- ern Tibetan Plateau Weather Station. The result shows： （1）the average wind speed and the maximum wind speed decreased. Average wind speed and the average maximum wind speed in the spring is the most in four seasons. （2） In general each station＇s daysis of bigger speed of wind （17m/s） on the rise, in 2010 reached a maximum value^Lenghu Mangya Gangcha Xinghai take second place,Xining at least which at lower alti- tude place ~ cumulative the day of bigger speed of wind, spring at most in four seasons. （3）Wind direction of the average wind speed and the maximum wind speed is mainly consistent ~ wind direction can be divided in- to four types.one focused on the WNW, one concentrated in the W, one is mainly concentrated in the WNW NW,one is relatively fragmented, but is given priority to with the westerly.

关 键 词：风速 风向 大风日数 

分 类 号：K903[历史地理—人文地理学]