Spatial and temporal variations in NO2 distributions over Beijing, China   measured by imaging differential optical absorption spectroscopy

doi:10.1016/j.jenvman.2008.11.025

CORC > 北京大学 > 环境科学与工程学院

	Spatial and temporal variations in NO2 distributions over Beijing, China measured by imaging differential optical absorption spectroscopy
	Lee, Hanlim ; Kim, Young J. ; Jung, Jinsang ; Lee, Chulkyu ; Heue, Klaus-Peter ; Platt, Ulrich ; Hu, Min ; Zhu, Tong
刊名	journal of environmental management
	2009
关键词	DOAS Imaging DOAS Remote sensing Nitrogen oxides TROPOSPHERIC NITROGEN-DIOXIDE MAX-DOAS EMISSIONS SYSTEM BRO
DOI	10.1016/j.jenvman.2008.11.025
英文摘要	During the CAREBEIJING campaign in 2006, imaging differential optical absorption spectroscopy (I-DOAS) measurements were made from 08:00 to 16:00 on September 9 and 10 over Beijing, China. Detailed images of the near-surface NO2 differential slant column density (DSCD) distribution over Beijing were obtained. Images with less than a 30-min temporal resolution showed both horizontal and vertical variations in NO2 distributions. For DSCD to mixing ratio conversion, path length along the lines of I-DOAS lines of sight was estimated using the light-extinction coefficient and Angstrom exponent data obtained by a transmissometer and a sunphotometer, respectively. Mixing ratios measured by an in-situ NO2 analyzer were compared with those estimated by the I-DOAS instrument. The obtained temporal and spatial variations in NO2 distributions measured by I-DOAS for the two days are interpreted with consideration of the locations of the major NO, sources and local wind conditions. I-DOAS measurements have been applied in this study for estimating NO2 distribution over an urban area with multiple and distributed emission sources. Results are obtained for estimated temporal and spatial NO2 distributions over the urban atmosphere; demonstrating the capability of the I-DOAS technique. We discuss in this paper the use of I-DOAS measurements to estimate the NO2 distribution over an urban area with multiple distributed emission sources. (C) 2008 Elsevier Ltd. All rights reserved.; Environmental Sciences; SCI(E); 0; ARTICLE; 5; 1814-1823; 90
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/246382]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Lee, Hanlim,Kim, Young J.,Jung, Jinsang,et al. Spatial and temporal variations in NO2 distributions over Beijing, China measured by imaging differential optical absorption spectroscopy[J]. journal of environmental management,2009.
APA	Lee, Hanlim.,Kim, Young J..,Jung, Jinsang.,Lee, Chulkyu.,Heue, Klaus-Peter.,...&Zhu, Tong.(2009).Spatial and temporal variations in NO2 distributions over Beijing, China measured by imaging differential optical absorption spectroscopy.journal of environmental management.
MLA	Lee, Hanlim,et al."Spatial and temporal variations in NO2 distributions over Beijing, China measured by imaging differential optical absorption spectroscopy".journal of environmental management (2009).