干旱区生态环境知识资源中心(Arid): 大气一海洋环流异常对山西省沙尘天气的影响

Arid

	大气一海洋环流异常对山西省沙尘天气的影响
其他题名	Effect of Atmospheric-ocean Circulation Fluctuation on the Frequency of Dust Weather over Shanxi Province
	刘瑞兰 1; 吴占华 1; 任国玉 2
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2010
卷号	27 期号:2 页码:217-223
中文摘要	利用山西省1961-2003年15个站的月沙尘天气日数资料,对沙尘天气发生的频率与大气一海洋环流因子SOI, NAO, PDO和AO指数的关系进行了分析.结果表明:与山西平均沙尘日数变化关系比较显著的因子有 PDO和AO指数,且均呈负相关.在这些环流指数偏高的年份,对应山西少沙尘天气;反之,则多沙尘天气.分析还发现,山西的沙尘天气事件与SOI指数有显著的滞后两年的正响应关系.与AO和PDO有显著负相关的站点主要分布在西北部到中东部及西南部,与SOI有滞后两年正相关的站点主要分布在中东部和东北部.在此基础上,讨论了大气一海洋系统振动对山西沙尘天气产生影响的可能机制.
英文摘要	Dust weather occurs usually over the semiarid, arid and desert areas. Days of occurring dust weather are related to the background of large-scale circulations to a great extent.It is possibly attributed to atmospheric-ocean fluctuation.In this paper, the relationship between annual days of occurring dust weather including windblown sand and sandstorm over Shanxi Province during the period from 1961 to 2003 and indices, i.e., NAO, PDO, AO and SOI indicating atmosphere-ocean system fluctuation is analyzed. The annu’al days of occurring dust weather were calculated by using the monthly data from 15 meteorological stations in the province. Correlation coefficient is used to describe the close degree of dust weather and atmosphere-ocean circulation factors. The results show that the quasi-periodic variation of global atmosphere and oceans might play an important role in the development and change of dust weather events in the region.It is found that there are the significant negative correlations between annual days of occurring dust weather over the study area and the PDO and AO indices.It is also found that there is a significant positive correlation between 2-year-lagged annual days of occurring dust weather and SOI index. The stations with significant negative correlation between the annual days of occurring dust weather and the PDO and AO indices are mainly located in the northwestem, central-eastern and southwestem parts ’of the province, but the ones with positive correlation between the 2-year-lagged annual days of occurring dust weather and the SOI index are mostly distributed in the central-eastern and northeastern parts.On which the possible mechanisms of effect of atmospheric-ocean fluctuation on dust weather over Shanxi Province are discussed.
中文关键词	沙尘天气 ; 大气一海洋 ; 环流因子 ; 气候变化 ; 山西
英文关键词	dust weather atmospheric-ocean circulation factor climate change Shanxi Province
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:3924804
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225058
作者单位	1.朔州市气象局, 朔州, 山西 036001, 中国; 2.中国气象局气候研究开放实验室, 中国气象局气候研究开放实验室;;国家气候中心, 北京 100081, 中国
推荐引用方式 GB/T 7714	刘瑞兰,吴占华,任国玉. 大气一海洋环流异常对山西省沙尘天气的影响[J],2010,27(2):217-223.
APA	刘瑞兰,吴占华,&任国玉.(2010).大气一海洋环流异常对山西省沙尘天气的影响.干旱区研究,27(2),217-223.
MLA	刘瑞兰,et al."大气一海洋环流异常对山西省沙尘天气的影响".干旱区研究 27.2(2010):217-223.