干旱区生态环境知识资源中心(Arid): 近50年春季沙尘活动及其对PM

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	近50年春季沙尘活动及其对PM_(10)质量浓度的影响
其他题名	Spring Dust Activities over Northern China and Its Impacts on PM_(10) Pollution in Recently 50 Years
	余予 1; 孟晓艳 2; 刘娜 1; 张志富 1; 任芝花 1; 王瑞斌 2
来源期刊	高原气象
ISSN	1000-0534
出版年	2014
卷号	33 期号:4 页码:988-994
中文摘要	利用中国北方847个地面气象台站观测的天气现象,从沙尘日数的时空分布、变化趋势等方面对19612012年中国北方春季沙尘活动进行了分析。结果表明,中国西北部的沙漠地带是春季沙尘暴和扬沙的多发和频发区。除个别台站,绝大部分北方站点的沙尘暴日数、起沙日数均呈显著下降趋势。19612012年中国北方区域平均的春季沙尘暴日数、起沙日数变化趋势分别为-1.2 d·(10a)~(-1)和-2.3 d·(10a)~(-1),下降趋势显著。另外,沙尘暴的影响范围也逐步缩小。通过分析大气环境监测的PM_(10)质量浓度(rho_(PM_(10))))日平均值数据表明,发生沙尘时,北京、石家庄、济南、兰州、西宁的日空气质量易超标。rho_(PM_(10))日平均值与沙尘持续时间呈显著正相关,即沙尘持续时间越长,rho_(PM_(10))日平均值增幅越大。
英文摘要	Temporal and spatial distribution of the spring dust activities over northern China from 1961 to 2012 were analyzed based on the sandstorm days (SDs) and the combined sandstorm and blowing dust days (CSBDs), which were calculated by the observation of weather phenomena from 847 northern surface stations. The results show that the desert terrains in northwest China are the high-incidence area of sandstorm and blowing dust occurrences. Almost all the northern stations, except a few, have significant decline trends in the spring SDs and the spring CSBDs. The trends of northern China mean SDs and CSBDs are -1.2 d·(10a)~(-1) and -2.3 d·(10a)~(-1) respectively, which are both significant. Furthermore, the sandstorm impacting area is shrinking. Based on the atmospheric environment monitored daily PM_(10) concentration, it indicates that Beijing, Shijiazhuang, Jinan, Lanzhou and Xining are more likely to have nonattainment days when encounter dust events. Daily mean PM_(10) concentration has a significant positive correlation with sand and dust duration, and longer the duration is, more the concentration increases.
中文关键词	沙尘暴 ; 扬沙 ; 浮尘 ; PM_(10)质量浓度
英文关键词	Sandstorm Blowing dust Floating dust PM_(10) concentration
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:5251654
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231271
作者单位	1.国家气象信息中心, 北京 100081, 中国; 2.中国环境监测总站, 北京 100012, 中国
推荐引用方式 GB/T 7714	余予,孟晓艳,刘娜,等. 近50年春季沙尘活动及其对PM_(10)质量浓度的影响[J],2014,33(4):988-994.
APA	余予,孟晓艳,刘娜,张志富,任芝花,&王瑞斌.(2014).近50年春季沙尘活动及其对PM_(10)质量浓度的影响.高原气象,33(4),988-994.
MLA	余予,et al."近50年春季沙尘活动及其对PM_(10)质量浓度的影响".高原气象 33.4(2014):988-994.