干旱区生态环境知识资源中心(Arid): 北京市大气能见度规律及下降原因

Arid

	北京市大气能见度规律及下降原因
其他题名	The Study of the Status and Degradation of Visibility in Beijing
	宋宇; 唐孝炎; 张远航; 胡敏; 方晨; 曾立民
来源期刊	环境科学研究
ISSN	1001-6929
出版年	2003
卷号	16 期号:2 页码:10-12
中文摘要	利用历史资料和外场观测数据。对北京市大气能见度的规律进行了分析。结果发现。北京市大气能见度较差的时间占全年的近一半。夏季能见度最好，冬季最差。通常中午能见度最好。高浓度的颗粒物是北京市大气能见度下降的主要原因。局地重污染天气和沙尘暴天气虽然发生几率小，但可以使北京市大气能见度下降得很低。
英文摘要	The sources affecting Bejing’s dust storm weather are analyzed and found out,which are mainly located in desert,desertification regions and vast agriculture reclamation areas in arid and semi-arid areas that are in the west fringe of the Hunshandake Sand in morth Beijing, in the center and west region of Inner Mongolia,and in the west He-Tao area.There are three dust transport paths that influence Beijing,i.e. west route,north route and northwest route.The climate characters are further analyzed and shown to be warm,drought and lacking precipitation, which accelerates formation of dust weather.In addition,dust sources spring precipitation and Beijing’s dust storm frequency are compared. There is a distinct negative correlation between Beijing’s dust storms frequency and spring precipitation at northwest route and north route dust sources,while there is a distinct negative correlation between Beijing’ s floating dust frequency and spring precipitation at west route dust sources.
中文关键词	能见度 ; 北京 ; 颗粒物污染
英文关键词	visibility Beijing particulate pollution
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:1336786
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/204154
作者单位	北京大学环境科学中心, 环境模拟与污染控制国家重点联合实验室, 北京 100871, 中国
推荐引用方式 GB/T 7714	宋宇,唐孝炎,张远航,等. 北京市大气能见度规律及下降原因[J],2003,16(2):10-12.
APA	宋宇,唐孝炎,张远航,胡敏,方晨,&曾立民.(2003).北京市大气能见度规律及下降原因.环境科学研究,16(2),10-12.
MLA	宋宇,et al."北京市大气能见度规律及下降原因".环境科学研究 16.2(2003):10-12.