气候变化领域集成服务门户(CCPortal): MAX-DOAS measurements of NO2, SO2, HCHO, and BrO at the Mt. Waliguan WMO GAW global baseline station in the Tibetan Plateau

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DOI	10.5194/acp-20-6973-2020
	MAX-DOAS measurements of NO2, SO2, HCHO, and BrO at the Mt. Waliguan WMO GAW global baseline station in the Tibetan Plateau
	Ma J.; Dörner S.; Donner S.; Jin J.; Cheng S.; Guo J.; Zhang Z.; Wang J.; Liu P.; Zhang G.; Pukite J.; Lampel J.; Lampel J.; Wagner T.
发表日期	2020
ISSN	1680-7316
起始页码	6973
结束页码	6990
卷号	20 期号:11
英文摘要	Mt. Waliguan Observatory (WLG) is a World Meteorological Organization (WMO) Global Atmosphere Watch (GAW) global baseline station in China. WLG is located at the northeastern part of the Tibetan Plateau (36°170 N, 100°540 E, 3816 m a.s.l.) and is representative of the pristine atmosphere over the Eurasian continent. We made long-term ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements at WLG during the period 2012-2015. In this study, we retrieve the differential slant column densities (dSCDs) and estimate the tropospheric background mixing ratios of different trace gases, including NO2, SO2, HCHO, and BrO, using the measured spectra at WLG. Averaging of 10 original spectra is found to be an "optimum option"for reducing both the statistical error of the spectral retrieval and systematic errors in the analysis. The dSCDs of NO2, SO2, HCHO, and BrO under clear-sky and low-aerosol-load conditions are extracted from measured spectra at different elevation angles at WLG. By performing radiative transfer simulations with the model TRACY-2, we establish approximate relationships between the trace gas dSCDs at 1° elevation angle and the corresponding average tropospheric background volume mixing ratios. Mixing ratios of these trace gases in the lower troposphere over WLG are estimated to be in a range of about 7 ppt (January) to 100 ppt (May) for NO2, below 0.5 ppb for SO2, between 0.4 and 0.9 ppb for HCHO, and lower than 0.3 ppt for BrO. The chemical box model simulations constrained by the NO2 concentration from our MAX-DOAS measurements show that there is a little net ozone loss (-0:8 ppb d-1) for the free-tropospheric conditions and a little net ozone production (0.3 ppb d-1) for the boundary layer conditions over WLG during summertime. Our study provides valuable information and data sets for further investigating tropospheric chemistry in the background atmosphere and its links to anthropogenic activities. © Author(s) 2020.
语种	英语
scopus关键词	atmospheric chemistry; atomic absorption spectroscopy; baseline survey; boundary layer; bromine compound; concentration (composition); elevation; formaldehyde; nitrogen dioxide; radiative transfer; sulfur dioxide; trace gas; troposphere; China; Qinghai; Qinghai-Xizang Plateau; Waliguan Mountain
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247716
作者单位	State Key Laboratory of Severe Weather and CMA Key Laboratory of Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing, China; Max Planck Institute for Chemistry, Mainz, Germany; CMA Meteorological Observation Centre, Beijing, China; Waliguan Observatory, Qinghai Meteorological Bureau, Xining, China; Airyx GmbH, Heidelberg, Germany
推荐引用方式 GB/T 7714	Ma J.,Dörner S.,Donner S.,et al. MAX-DOAS measurements of NO2, SO2, HCHO, and BrO at the Mt. Waliguan WMO GAW global baseline station in the Tibetan Plateau[J],2020,20(11).
APA	Ma J..,Dörner S..,Donner S..,Jin J..,Cheng S..,...&Wagner T..(2020).MAX-DOAS measurements of NO2, SO2, HCHO, and BrO at the Mt. Waliguan WMO GAW global baseline station in the Tibetan Plateau.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(11).
MLA	Ma J.,et al."MAX-DOAS measurements of NO2, SO2, HCHO, and BrO at the Mt. Waliguan WMO GAW global baseline station in the Tibetan Plateau".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.11(2020).