Mixing state and hygroscopicity of dust and haze particles before leaving Asian continent

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Mixing state and hygroscopicity of dust and haze particles before leaving Asian continent. / Li, Weijun; Shao, Longyi; Shi, Zongbo; Chen, Jianmin; Yang, Lingxiao; Yuan, Qi; Yan, Chao; Zhang, Xiaoye; Wang, Yaqiang; Sun, Junying; Zhang, Yangmei; Shen, Xiaojing; Wang, Zifa; Wang, Wenxing.

In: Journal of Geophysical Research: Atmospheres, Vol. 119, No. 2, 17.01.2014, p. 1044-1059.

Research output: Contribution to journalArticlepeer-review

Harvard

Li, W, Shao, L, Shi, Z, Chen, J, Yang, L, Yuan, Q, Yan, C, Zhang, X, Wang, Y, Sun, J, Zhang, Y, Shen, X, Wang, Z & Wang, W 2014, 'Mixing state and hygroscopicity of dust and haze particles before leaving Asian continent', Journal of Geophysical Research: Atmospheres, vol. 119, no. 2, pp. 1044-1059. https://doi.org/10.1002/2013JD021003

APA

Li, W., Shao, L., Shi, Z., Chen, J., Yang, L., Yuan, Q., Yan, C., Zhang, X., Wang, Y., Sun, J., Zhang, Y., Shen, X., Wang, Z., & Wang, W. (2014). Mixing state and hygroscopicity of dust and haze particles before leaving Asian continent. Journal of Geophysical Research: Atmospheres, 119(2), 1044-1059. https://doi.org/10.1002/2013JD021003

Vancouver

Author

Li, Weijun ; Shao, Longyi ; Shi, Zongbo ; Chen, Jianmin ; Yang, Lingxiao ; Yuan, Qi ; Yan, Chao ; Zhang, Xiaoye ; Wang, Yaqiang ; Sun, Junying ; Zhang, Yangmei ; Shen, Xiaojing ; Wang, Zifa ; Wang, Wenxing. / Mixing state and hygroscopicity of dust and haze particles before leaving Asian continent. In: Journal of Geophysical Research: Atmospheres. 2014 ; Vol. 119, No. 2. pp. 1044-1059.

Bibtex

@article{37113aa80dcd449c8573b87783195ae8,
title = "Mixing state and hygroscopicity of dust and haze particles before leaving Asian continent",
abstract = "Pollutants during haze and Asian dust storms are transported out of the Asian continent, affecting the regional climate and the hydrological and biogeochemical cycles. Understanding the physicochemical properties of aerosol particles is essential to quantify their impacts. In order to determine physicochemical properties of aerosols before leaving the Asian continent, we carried out a field campaign from 14 April to 2 May 2011 at a background site in the path of Asian dust and haze outflows. We measured concentrations of gaseous pollutants (SO2, NO2, NO, O3, and CO), black carbon (BC), and particle number in situ and collected airborne particles for microscopic analysis. Pollutant concentrations (BC, 4 μgm3; CO, 808 ppb; SO2, 24ppb; NO2, 37 ppb) were highest during haze periods, except for PM2.5 mass, which was highest (162 μgm3) during a dust storm. Seventy-one percent of haze particles were coated with organic films and 32% were internal mixtures of sulfates and refractory particles (e.g., soot, metal/fly ash, and mineral). Seventy-nine percent of haze particles have deliquescence relative humidity at 68–70%. During a dust storm, soot particles were observed among dust particles. Most dust particles were hydrophobic, and no Ca(NO3)2 was observed in dust particles collected during the dust storms, but up to 32% of dust particles were found to be coated with Ca(NO3)2 after the main dust storm moved out of the sampling area. These results indicated that both natural and anthropogenic aerosol particles in Asian outflow can undergo significant physicochemical processes before leaving the Asian continent.",
author = "Weijun Li and Longyi Shao and Zongbo Shi and Jianmin Chen and Lingxiao Yang and Qi Yuan and Chao Yan and Xiaoye Zhang and Yaqiang Wang and Junying Sun and Yangmei Zhang and Xiaojing Shen and Zifa Wang and Wenxing Wang",
year = "2014",
month = jan,
day = "17",
doi = "10.1002/2013JD021003",
language = "English",
volume = "119",
pages = "1044--1059",
journal = "Journal of Geophysical Research: Atmospheres",
issn = "2169-897X",
publisher = "American Geophysical Union",
number = "2",

}

RIS

TY - JOUR

T1 - Mixing state and hygroscopicity of dust and haze particles before leaving Asian continent

AU - Li, Weijun

AU - Shao, Longyi

AU - Shi, Zongbo

AU - Chen, Jianmin

AU - Yang, Lingxiao

AU - Yuan, Qi

AU - Yan, Chao

AU - Zhang, Xiaoye

AU - Wang, Yaqiang

AU - Sun, Junying

AU - Zhang, Yangmei

AU - Shen, Xiaojing

AU - Wang, Zifa

AU - Wang, Wenxing

PY - 2014/1/17

Y1 - 2014/1/17

N2 - Pollutants during haze and Asian dust storms are transported out of the Asian continent, affecting the regional climate and the hydrological and biogeochemical cycles. Understanding the physicochemical properties of aerosol particles is essential to quantify their impacts. In order to determine physicochemical properties of aerosols before leaving the Asian continent, we carried out a field campaign from 14 April to 2 May 2011 at a background site in the path of Asian dust and haze outflows. We measured concentrations of gaseous pollutants (SO2, NO2, NO, O3, and CO), black carbon (BC), and particle number in situ and collected airborne particles for microscopic analysis. Pollutant concentrations (BC, 4 μgm3; CO, 808 ppb; SO2, 24ppb; NO2, 37 ppb) were highest during haze periods, except for PM2.5 mass, which was highest (162 μgm3) during a dust storm. Seventy-one percent of haze particles were coated with organic films and 32% were internal mixtures of sulfates and refractory particles (e.g., soot, metal/fly ash, and mineral). Seventy-nine percent of haze particles have deliquescence relative humidity at 68–70%. During a dust storm, soot particles were observed among dust particles. Most dust particles were hydrophobic, and no Ca(NO3)2 was observed in dust particles collected during the dust storms, but up to 32% of dust particles were found to be coated with Ca(NO3)2 after the main dust storm moved out of the sampling area. These results indicated that both natural and anthropogenic aerosol particles in Asian outflow can undergo significant physicochemical processes before leaving the Asian continent.

AB - Pollutants during haze and Asian dust storms are transported out of the Asian continent, affecting the regional climate and the hydrological and biogeochemical cycles. Understanding the physicochemical properties of aerosol particles is essential to quantify their impacts. In order to determine physicochemical properties of aerosols before leaving the Asian continent, we carried out a field campaign from 14 April to 2 May 2011 at a background site in the path of Asian dust and haze outflows. We measured concentrations of gaseous pollutants (SO2, NO2, NO, O3, and CO), black carbon (BC), and particle number in situ and collected airborne particles for microscopic analysis. Pollutant concentrations (BC, 4 μgm3; CO, 808 ppb; SO2, 24ppb; NO2, 37 ppb) were highest during haze periods, except for PM2.5 mass, which was highest (162 μgm3) during a dust storm. Seventy-one percent of haze particles were coated with organic films and 32% were internal mixtures of sulfates and refractory particles (e.g., soot, metal/fly ash, and mineral). Seventy-nine percent of haze particles have deliquescence relative humidity at 68–70%. During a dust storm, soot particles were observed among dust particles. Most dust particles were hydrophobic, and no Ca(NO3)2 was observed in dust particles collected during the dust storms, but up to 32% of dust particles were found to be coated with Ca(NO3)2 after the main dust storm moved out of the sampling area. These results indicated that both natural and anthropogenic aerosol particles in Asian outflow can undergo significant physicochemical processes before leaving the Asian continent.

UR - http://www.scopus.com/inward/record.url?scp=84900230186&partnerID=8YFLogxK

U2 - 10.1002/2013JD021003

DO - 10.1002/2013JD021003

M3 - Article

AN - SCOPUS:84900230186

VL - 119

SP - 1044

EP - 1059

JO - Journal of Geophysical Research: Atmospheres

JF - Journal of Geophysical Research: Atmospheres

SN - 2169-897X

IS - 2

ER -