达州地区高温天气及其变化特征  

Megatherm Climate Features and Changes in Dazhou

作　　者：赖亮[1] 钟晓平[2] 

机构地区：[1]成都信息工程学院,成都610225 [2]四川省气象局,成都610072

出　　处：《高原山地气象研究》2014年第4期64-71,共8页Plateau and Mountain Meteorology Research

摘　　要：主要利用四川15个地面气象观测站1960~2012年逐日最高温度资料,采用统计学分析方法,对达州地区的高温天气特征及其变化情况进行了分析,并着重对2003年前后高温天气的差异以及达州地区高温天气与周边地区的关系进行了研究和讨论。分析结果表明,在这53年间,达县站的高温日数明显偏多,为该区域之首;区域内各站点的年高温日数的多年序列均为两峰一谷,但呈现出前后持平和前低后高两种型态;1960~2003年与2004~2012年的年高温日序列存在显著性差异,2003年后达州地区站点年高温日数有显著增加并达到历史最高峰;年高温日数的频率分布在该区域有四种形式：准正态型、偏态型、L型和双峰型。Based on the daily maximum temperature of 15 observation stations in Siehuan during 1960 -2012, using statistical analysis methods, the megatherm climate features and changes in Dazhou, Sichuan, were analyzed. Highlighted differences before and after 2003 in the hot weather of Dazhou region as well as the relationship between Dazhou and the surrounding areas are been studied and discussed. The results show that, in these 53 years, the number of high temperature days in Daxian station was the highest one in this area. The sequences of high temperature days in all sites of this area show a pattern of two - peak -one -valley. Also a difference can be fund between those sites. In some sites the former peak is lower than the later one. But in the others these two peaks are the same. There is a significance difference between the sequences of daily maximum temperature before 2003 （1960 - 2003） and after 2003 （2004 - 2012）. After 2003, the numbers of high temperature days in Dazhou region has increased significantly and reached its historical peak. As far as the frequency distribution of high tempera- ture days, four patterns are fund, which are quasi -normal,skew, L-and bimodal types.

关 键 词：高温 统计特征 2003年 达州 

分 类 号：P468[天文地球—大气科学及气象学]