气候变化领域集成服务门户(CCPortal): Spectral Inversion and Variation Characteristics of Tropospheric NO2 Column Density in Lhasa, Tibet

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DOI	10.3964/j.issn.1000-0593(2023)06-1725-06
	Spectral Inversion and Variation Characteristics of Tropospheric NO2 Column Density in Lhasa, Tibet
	Pu Gui-Jua; Cheng Si-Yang; Li Song-Kui; Lu Jin-Guang; Chen Hua; Ma Jian-Zhong
发表日期	2023
ISSN	1000-0593
起始页码	1725
结束页码	1730
卷号	43 期号:6
英文摘要	The observation of solar scattering spectra was performed at Lhasa by Multi Axis Differential Optical Absorption Spectroscopy (MAX-DOAS), which was used to retrieve the tropospheric vertical column densities (VCDtrop) of nitrogen dioxide (NO2) in order to investigate the variation characteristics of NO2 during the celebration period of the 70th anniversary of the peaceful liberation of Tibet. During the observation period (9 August 2021 to 31 August 2021) the averaged NO2 VCDrop in the daytime was 4. 46 X 1015 molec cm (2), significantly higher than that on the celebration day of the 70th anniversary of the peaceful liberation of Tibet (2. 85 X 1015 molec cm (2)). In addition, the daily averages of NO2 VCDrop presented a good correlation with the results measured by the online surface observation, with a correlation coefficient of O. 58. During the observation experiment, the prevailing wind direction in Lhasa was westerly, and the east-west direction was the transport path of atmospheric NO2, which was consistent with the river valley topography of Lhasa city. The average diurnal variation of the hourly means of NO2 VCD, showed a U pattern, with higher values appearing in the morning and evening, and lower values occurring around 16:00. However, on the celebration day of the 70th anniversary of the peaceful liberation of Tibet, the diurnal variation of NO2 VCD, not only presented the peak values in the morning and evening but also at noon, which probably was related to the removal of road control measures after the activity and the emission of support vehicle. In conclusion, this study confirmed the good applicability of ground-based MAX-DOAS remote sensing in the typical city of Lhasa over the Tibetan Plateau. Meanwhile, it was also found that the level and variation of NO2 VCD, in Lhasa were mainly affected by urban traffic emissions. The atmospheric NO2 concentration in Lhasa was lower on the celebration day of the 70th anniversary of the peaceful liberation of Tibet.
关键词	MAX-DOAS NO2 Tropospheric column density Lhasa
英文关键词	MAX-DOAS MEASUREMENTS; SO2; POLLUTANTS; RETRIEVAL; HCHO; BRO
WOS研究方向	Spectroscopy
WOS记录号	WOS:001027841600009
来源期刊	SPECTROSCOPY AND SPECTRAL ANALYSIS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282829
作者单位	Chinese Academy of Sciences; Changchun Institute of Optics, Fine Mechanics & Physics, CAS; China Meteorological Administration; Chinese Academy of Meteorological Sciences (CAMS); China Meteorological Administration; Chinese Academy of Meteorological Sciences (CAMS); China Meteorological Administration
推荐引用方式 GB/T 7714	Pu Gui-Jua,Cheng Si-Yang,Li Song-Kui,et al. Spectral Inversion and Variation Characteristics of Tropospheric NO2 Column Density in Lhasa, Tibet[J],2023,43(6).
APA	Pu Gui-Jua,Cheng Si-Yang,Li Song-Kui,Lu Jin-Guang,Chen Hua,&Ma Jian-Zhong.(2023).Spectral Inversion and Variation Characteristics of Tropospheric NO2 Column Density in Lhasa, Tibet.SPECTROSCOPY AND SPECTRAL ANALYSIS,43(6).
MLA	Pu Gui-Jua,et al."Spectral Inversion and Variation Characteristics of Tropospheric NO2 Column Density in Lhasa, Tibet".SPECTROSCOPY AND SPECTRAL ANALYSIS 43.6(2023).