干旱区生态环境知识资源中心(Arid): 兰州春季沙尘过程PM

Arid

	兰州春季沙尘过程PM_10输送路径及其潜在源区
其他题名	A study on potential sources and transportation pathways of PM_(10) in spring in Lanzhou
	刘娜; 余晔; 陈晋北; 何建军; 赵素平
来源期刊	大气科学学报
ISSN	1674-7097
出版年	2012
卷号	35 期号:4 页码:477-486
中文摘要	将20012008年分为沙尘天气相对多年和相对少年,计算兰州市春季逐日4个时次的4d气团后向轨迹。通过聚类分析得到春季到达兰州市区的主要气团轨迹组,结合可吸入颗粒物PM_(10)日均质量浓度资料,通过计算潜在源贡献因子PSCF(potential source contribution function)和浓度权重轨迹CWT(concentration-weighted trajectory),得到影响兰州市春季PM_(10)质量浓度的潜在源区以及不同源区对兰州市春季PM_(10)质量浓度贡献的差异。结果表明,在沙尘天气相对多年,西路径和西北路径发生比例最高,分别占总轨迹的33%和19.4%,其中有50%以上为污染轨迹,是造成兰州市春季高质量浓度PM_(10)污染的主要输送路径。沙尘天气相对少年的主要输送路径是西路径,其次是北路径,分别占23.6%和18%。影响兰州市春季大气PM_(10)质量浓度的潜在源区分布在新疆塔里木盆地、吐鲁番盆地、青海柴达木盆地、甘肃河西走廊、内蒙古中部和西部的沙漠戈壁地区。
英文摘要	Three-dimensional 4-day backward trajectories arriving in Lanzhou at 500m high were calculated every 6 h by using HYSPLIT-4 trajectory model in spring of 2001 to 2008.The 8 years were divided into two categories:high dust year(2001,2002,2004 and 2006) and low dust year(2003,2005,2007 and 2008).Cluster analysis,potential source contribution function(PSCF) model,and concentration-weighted trajectory(CWT) method were used to evaluate the transportation pathways and potential source regions of Lanzhou PM_(10) pollution in spring.Results indicate that the western and northwestern pathways,respectively accounting for 33% and 19.4% of all trajectories,were major pathways leading to high springtime PM_(10) loadings in Lanzhou in 2001,2002,2004 and 2006.However,the major pathways were the western and the northern pathways in 2003,2005,2007 and 2008,accounting for 23.6% and 18%,respectively.There were six potential source regions that had effect on PM_(10) concentration in Lanzhou,including Tarim Basin and Turpan Basin in Xinjiang,Qaidam Basin in Qinghai,Hexi Corridor in Gansu Province,the desert and gobi area in central and western Inner Mongolia.
中文关键词	HYSPLIT轨迹模式 ; 后向轨迹 ; 传输路径 ; 潜在源区
英文关键词	PM_(10) HYSPLIT model PM_(10) back-trajectories transportation pathways potential sources
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:4618897
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227822
作者单位	中国科学院寒区旱区环境与工程研究所, 中国科学院寒旱区陆面过程与气候变化重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	刘娜,余晔,陈晋北,等. 兰州春季沙尘过程PM_10输送路径及其潜在源区[J]. 中国科学院西北生态环境资源研究院,2012,35(4):477-486.
APA	刘娜,余晔,陈晋北,何建军,&赵素平.(2012).兰州春季沙尘过程PM_10输送路径及其潜在源区.大气科学学报,35(4),477-486.
MLA	刘娜,et al."兰州春季沙尘过程PM_10输送路径及其潜在源区".大气科学学报 35.4(2012):477-486.