气候变化领域集成服务门户(CCPortal): Formation Mechanisms and Source Apportionments of Airborne Nitrate Aerosols at a Himalayan-Tibetan Plateau Site: Insights from Nitrogen and Oxygen Isotopic Compositions

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DOI	10.1021/acs.est.1c03957
	Formation Mechanisms and Source Apportionments of Airborne Nitrate Aerosols at a Himalayan-Tibetan Plateau Site: Insights from Nitrogen and Oxygen Isotopic Compositions
	Lin, Yu-Chi; Zhang, Yan-Lin; Yu, Mingyuan; Fan, Mei-Yi; Xie, Feng; Zhang, Wen-Qi; Wu, Guangming; Cong, Zhiyuan; Michalski, Greg
通讯作者	Zhang, YL (通讯作者)
发表日期	2021
ISSN	0013-936X
EISSN	1520-5851
起始页码	12261
结束页码	12271
卷号	55 期号:18
英文摘要	Formation pathways and sources of atmosphere nitrate (NO3-) have attracted much attention as NO3- had detrimental effects on Earth's ecosystem and climate change. Here, we measured nitrogen (delta N-15-NO3-) and oxygen (delta O-18-NO3- and Delta O-17-NO3-) isotope compositions in nitrate aerosols at the Qomolangma station (QOMS) over the Himalayan-Tibetan Plateau (HTP) to quantify the formation mechanisms and emission sources of nitrate at the background site. At QOMS, the enhanced NO3- concentrations were observed in the springtime. The average delta N-15-NO3-, delta O-18-NO3-, and Delta O-17-NO3- values were 0.4 +/- 4.9, 64.7 +/- 11.5 and 27.6 +/- 6.9 parts per thousand, respectively. Seasonal variations of isotope ratios at QOMS can be explained by the different emissions and formation pathways to nitrate. The average fractions of NO2 + OH and N2O5 + H2O to nitrate production were estimated to be 43 and 52%, respectively, when the NO3 + hydrocarbon (HC)/dimethyl sulfide (DMS) (NO3 + HC/DMS) pathway was assumed to be 5%. Using stable isotope analysis in the R (SIAR) model, the relative contributions of biomass burning (BB), biogenic soil emission, traffic, and coal combustion to nitrate were estimated to be 28, 25, 24, and 23%, respectively, on yearly basis. By FLEXible PARTicle (FLEXPART) dispersion model, we highlighted that NOx from BB emission over South Asia that had undergone N2O5 + H2O processes enhanced the nitrate concentrations in the springtime over the HTP region.
关键词	CHEMICAL SOURCE PROFILES EMISSION INVENTORY GLOBAL-MODEL NOX PM2.5 REGION OZONE VEHICLE FRACTIONATION DISPERSION
英文关键词	nitrate aerosols; nitrogen and oxygen isotopes; Himalayan-Tibetan Plateau; formation pathways; biomass burning
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000699957900014
来源期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260336
推荐引用方式 GB/T 7714	Lin, Yu-Chi,Zhang, Yan-Lin,Yu, Mingyuan,et al. Formation Mechanisms and Source Apportionments of Airborne Nitrate Aerosols at a Himalayan-Tibetan Plateau Site: Insights from Nitrogen and Oxygen Isotopic Compositions[J]. 中国科学院青藏高原研究所,2021,55(18).
APA	Lin, Yu-Chi.,Zhang, Yan-Lin.,Yu, Mingyuan.,Fan, Mei-Yi.,Xie, Feng.,...&Michalski, Greg.(2021).Formation Mechanisms and Source Apportionments of Airborne Nitrate Aerosols at a Himalayan-Tibetan Plateau Site: Insights from Nitrogen and Oxygen Isotopic Compositions.ENVIRONMENTAL SCIENCE & TECHNOLOGY,55(18).
MLA	Lin, Yu-Chi,et al."Formation Mechanisms and Source Apportionments of Airborne Nitrate Aerosols at a Himalayan-Tibetan Plateau Site: Insights from Nitrogen and Oxygen Isotopic Compositions".ENVIRONMENTAL SCIENCE & TECHNOLOGY 55.18(2021).