摘要
利用中国1954-2004年194个站日平均气温资料,基于Box-Cox变换指数λ分析了日平均气温分布与正态分布的偏差程度.结果表明,中国50年夏季日平均气温序列与正态分布的偏差程度呈一定的区域差异:半干旱区域,温度分布的正态性较好;东南沿海地区则不服从正态分布,呈较明显的右偏.因此,根据Box-Cox变换指数λ的大小将中国分为三个不同的区域,研究了中国夏季温度的偏态分布规律及其变化特征.
Based on the daily average temperature records in summer from 1954 to 2004 in China from about 194 stations,the deviation degree between actual records distribution and the normal distribution was analyzed with the Box-Cox transformation index.The results indicate that areal differentiation of unconformed normal distribution is evident.In the semi-arid regions temperature distribution is more normal while in the southeast coastal areas the temperature is not normally distributed,i.e.It is obviously rightskewed. We divided China into three different regions according to the Box-Cox transformation index and studied the regularities of distribution and variation characteristics of their summer temperature.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第3期41-46,共6页
Journal of Lanzhou University(Natural Sciences)
基金
国家自然科学基金项目(40675044)
国家重点基础研究发展计划(973计划)(2006CB400503)
科技部支撑项目(2007BAC29B01
2007BAC29A01)
关键词
Box-Cox变换
极端温度
偏态分布
正态分布
Box-Cox transformation
extreme temperature
skewed distribution
normal distribution
