干旱区生态环境知识资源中心(Arid): 1961-2005年河西走廊东部极端气温事件变化

Arid

	1961-2005年河西走廊东部极端气温事件变化
其他题名	Changes in the Extreme Temperatures in the East of Hexi Corridor in 1961-2005
	李玲萍 1; 薛新玲 2; 李岩瑛 3; 盖晓平 4; 奚立宗 5
来源期刊	冰川冻土
ISSN	1000-0240
出版年	2010
卷号	32 期号:1 页码:43-51
中文摘要	利用1961-2005年河西走廊东部五站的逐日气温资料, 通过百分位法定义了不同台站的逐日极端高、低温阈值, 研究了河西走廊东部近45 a来极端气温事件变化的空间分布以及时间变化特征. 结果表明: 在空间分布上, 河西走廊东部极端最高气温总阈值民勤出现了暖中心, 乌鞘岭出现了冷中心; 极端最低气温总阈值暖中心出现在武威, 冷中心出现在乌鞘岭; 极端最高、低气温空间分布与其对应阈值的空间分布类似; 河西走廊东部极端低温频数南北部都呈现减少趋势, 而极端高温频数在南部古浪和北部靠近沙漠区的民勤呈现减少趋势, 其它地区为增加趋势. 时间变化上, 河西走廊东部极端最高、低气温总体都呈增温趋势, 增温幅度极端最低气温比极端最高气温明显; 极端最高气温频数总体呈略增加趋势, 极端最低气温频数呈明显的减少趋势; 极端最高、低气温和极端最高、低气温频数都是6～7 a和9～10 a周期反映明显; 极端最高、低气温增温以及极端高温频数增加和极端低温频数减少都发生了突变现象.
英文摘要	Based on the data of daily temperatures from five weather Stations (Wuwei, Minqin, Yongchang, Gulang, Wushaoling) in the east of Hexi corridor from 1961 to 2005, the thresholds of daily extreme maximum temperatures and extreme minimum temperatures are determined for different stations, and the characteristics of temporal and spatial distributions of extreme temperature events in the east of Hexi corridor are studied for the recent 45 years. The results show that spatially, there are a warm center of extreme maximum temperature threshold in Minqin and a cold center in Wushaoling; there a warm center of extreme minimum temperature threshold in Wuwei and a cold center in Wushaoling. The spatial distributions of the extreme maximum temperature and extreme minimum temperature are similar to those of their thresholds; Frequencies of the extreme minimum temperatures show a decreasing tendency in the south and the north of the east of Hexi corridor, but frequencies of the extreme maximum temperatures show a decreasing tendency in the north of Gulang and near the Minqin desert, with an increasing tendency in other areas. Temporally, the extreme maximum temperature and the extreme minimum temperature show an increasing tendency, with an increase in the extreme minimum temperature more than that in the extreme maximum temperature. Frequencies of the extreme maximum temperature show a slightly increasing tendency, but frequencies of the extreme minimum temperature show an obviously decreasing tendency. It is also found that vibration periods of 6～7 a and 9～10 a are displayed very clearly in the extreme temperatures and the frequencies of extreme temperatures; It is demonstrated that some abrupt changes presented in the series of extreme maximum and minimum temperatures, as well as in the increase of the frequencies of extreme maximum temperature and the decrease of the frequencies of extreme minimum temperature.
中文关键词	河西走廊东部 ; 极端气温事件 ; 时空演变
英文关键词	the east of Hexi corridor extreme temperature temporal and spatial evolution
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:3822484
来源机构	中国气象局兰州干旱气象研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224693
作者单位	1.中国气象局,兰州干旱气象研究所, 甘肃省干旱气候变化与减灾重点实验室,中国气象局,干旱气候变化与减灾重点开放实验室, 兰州, 甘肃 730020, 中国; 2.民勤县气象站, 民勤, 甘肃 733300, 中国; 3.甘肃省武威市气象局, 武威, 甘肃 733000, 中国; 4.兰州交通大学机电工程学院, 兰州, 甘肃 730070, 中国; 5.甘肃省气象局, 兰州, 甘肃 730020, 中国
推荐引用方式 GB/T 7714	李玲萍,薛新玲,李岩瑛,等. 1961-2005年河西走廊东部极端气温事件变化[J]. 中国气象局兰州干旱气象研究所,2010,32(1):43-51.
APA	李玲萍,薛新玲,李岩瑛,盖晓平,&奚立宗.(2010).1961-2005年河西走廊东部极端气温事件变化.冰川冻土,32(1),43-51.
MLA	李玲萍,et al."1961-2005年河西走廊东部极端气温事件变化".冰川冻土 32.1(2010):43-51.