摘要
本文使用756个气象站点年值数据,基于最小二乘的线性拟合方法,利用1961—2012年小国年值风速的趋势变化值和波动特征值来定量识别中国风速的区域变化特征,以县级行政单位为区划单元,完成了中国1961—2012年风速变化区划,一级区划根据风速趋势值的变化划分为6个变化趋势带,即东北-华北大幅减小趋势带,华东-华中中幅减小趋势带,东南小幅减小趋势带,西南微幅减小趋势带,西北中幅减小趋势带,青藏高原小幅减小趋势带,二级区划根据风速的波动特征值并结合一级区划的结果,划分为12个波动特征区。
This research uses the mean wind speed observation data in China,adopts linear fitting method.Aims to quantitatively recognize the change of wind speed using wind speed trend and trend of wind speed variability from 1961 to 2012 and regionalize the wind speed change in China on a county-level basis.The findings suggest that level-I regionalization include six zones according to different change rate of wind speed trend value in different regions.Northeast-North China substantial declining zone,East-Central China declining zone,Southeast China slightly declining zone,Southwest China very slightly declining zone,Northwest China declining zone,Qinghai-Tibetan Plateau slightly declining zone.Level-Ⅱ regionalization divides China into twelve regions based on trend of wind speed variability and the results from level-Ⅰ regionalization.
出处
《气候变化研究进展》
CSCD
北大核心
2015年第6期387-394,共8页
Climate Change Research
基金
国家自然科学基金创新研究群体项目"地表过程模型与模拟"(41321001)
国家重大科学研究计划(973)"全球变化与环境风险关系及其适应性范式研究"(2012CB955404)
关键词
风速变化
区划
趋势变化
波动特征
wind speed change
regionalization
trend
variability
