干旱区生态环境知识资源中心(Arid): 宁夏冬季气温的变化及同期500hPa环流特征量的变化特征

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	宁夏冬季气温的变化及同期500hPa环流特征量的变化特征
其他题名	Change characteristics of air temperature in Ningxia and of atmospheric circulation of 500 hPa in Winter
	郑广芬 1; 陈晓光 1; 赵光平 1; 孙银川 2; 纳丽 2
ISSN	1000-6060
出版年	2006
卷号	29 期号:1 页码:59-64
中文摘要	通过近40多年来宁夏冬季气温的变化进行了研究，结果表明：宁夏冬季气温总趋势是变暖的，冬季平均气温在1985年前后发生突变，突变后升温最明显的是中部干旱带；宁夏冬季气候变暖与大区域有不同之处，19671990年宁夏冬季升温过程，最低气温是主要的。但1990年以后宁夏冬季的变暖，并不完全是由于最低气温的变暖而形成，最高气温的变暖也足20世纪90年代以来宁夏冬季气候变暖的重要特征；宁夏极端气温变化具有明显阶段性特征，80年代末期以后极端最低气温的变率明髭增大；冬季北半球500hpa极涡面积、亚洲西风环流指数、东亚大槽位置、西太平洋副热带高压强度与宁夏冬季平均气温有较为一致的年代际气候特征：小波分析发现，以上环流特征量与宁夏冬季平均气温存在相同的4年左右的主周期变化，且在时、频域上有较为一致的对应关系。
英文摘要	In this paper, the change of air temperature in Ningxia Hui Autonomous Region, China, is researched using the data of average, average maximum and minimum and extremely maximum and minimum temperatures observed by 23 meteorological stations in Ningxia during the period of 1961-2004 and the data of the 500 hPa general circulation. The results are as follows：（1） The air temperature in Ningxia in winter was increased during the period of 1962-2003; a sudden climate change occurred around 1985, after the sudden climate change, the average temperature in winter, average minimum and maximum temperatures were increased by 1.7℃, 1.5℃ and 2.0℃ respectively than that before the sudden climate change, and the temperature increase is the most significant in the central arid regions after the,sudden climate change; （2） The climate warming in Ningxia in winter is different to some extent from that in other regions, that is the climate warming in Ningxia in winter is affected by the increase of both minimum and maximum temperatures since the 1990s; （3） The change of the extremely minimum temperature in Ningxia in winter is significantly periodical, and the change rate of the extremely minimum temperature has been significantly increased; （4） Corresponding to the decade temperature increase, the climate change since the mid-1980s is also revealed by the eigenvalues of 500 hPa general circulation, such as the change in the North Hemisphere vortex area in winter, Asian west wind circulation index, position of East Asian trough, and intensity of subtropical high in West Pacific Ocean; the results of wavelet analysis reveal that the change of average temperature in Ningxia in winter accords with that of the eigenvalues of 500 hPa general circulation, and they have the same 4-year periodical change.
中文关键词	宁夏 ; 冬季气温 ; 大气环流 ; 年代际特征 ; 小波变换
英文关键词	Ningxia temperature in winter general circulation decade climate change wavelet analysis
语种	中文
国家	中国
收录类别	CSCD
WOS类目	REMOTE SENSING ; GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Remote Sensing ; Geology
CSCD记录号	CSCD:2296726
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219663
作者单位	1.宁夏气象防灾减灾重点实验室, 宁夏气象防灾减灾重点实验室, 银川, 宁夏 750002, 中国; 2.宁夏气象台, 银川, 宁夏 750002, 中国
推荐引用方式 GB/T 7714	郑广芬,陈晓光,赵光平,等. 宁夏冬季气温的变化及同期500hPa环流特征量的变化特征[J],2006,29(1):59-64.
APA	郑广芬,陈晓光,赵光平,孙银川,&纳丽.(2006).宁夏冬季气温的变化及同期500hPa环流特征量的变化特征.,29(1),59-64.
MLA	郑广芬,et al."宁夏冬季气温的变化及同期500hPa环流特征量的变化特征".29.1(2006):59-64.