Measurement report: comparison of wintertime individual particles at ground level and above the mixed layer in urban Beijing

Research output: Contribution to journalArticlepeer-review

Standard

Measurement report : comparison of wintertime individual particles at ground level and above the mixed layer in urban Beijing. / Wang, Wenhua; Shao, Longyi; Mazzoleni, Claudio; Li, Yaowei; Kotthaus, Simone; Grimmond, Sue; Bhandari, Janarjan; Xing, Jiaoping; Feng, Xiaolei; Zhang, Mengyuan; Shi, Zongbo.

In: Atmospheric Chemistry and Physics, Vol. 21, No. 7, 07.04.2021, p. 5301-5314.

Research output: Contribution to journalArticlepeer-review

Harvard

Wang, W, Shao, L, Mazzoleni, C, Li, Y, Kotthaus, S, Grimmond, S, Bhandari, J, Xing, J, Feng, X, Zhang, M & Shi, Z 2021, 'Measurement report: comparison of wintertime individual particles at ground level and above the mixed layer in urban Beijing', Atmospheric Chemistry and Physics, vol. 21, no. 7, pp. 5301-5314. https://doi.org/10.5194/acp-21-5301-2021

APA

Wang, W., Shao, L., Mazzoleni, C., Li, Y., Kotthaus, S., Grimmond, S., Bhandari, J., Xing, J., Feng, X., Zhang, M., & Shi, Z. (2021). Measurement report: comparison of wintertime individual particles at ground level and above the mixed layer in urban Beijing. Atmospheric Chemistry and Physics, 21(7), 5301-5314. https://doi.org/10.5194/acp-21-5301-2021

Vancouver

Author

Wang, Wenhua ; Shao, Longyi ; Mazzoleni, Claudio ; Li, Yaowei ; Kotthaus, Simone ; Grimmond, Sue ; Bhandari, Janarjan ; Xing, Jiaoping ; Feng, Xiaolei ; Zhang, Mengyuan ; Shi, Zongbo. / Measurement report : comparison of wintertime individual particles at ground level and above the mixed layer in urban Beijing. In: Atmospheric Chemistry and Physics. 2021 ; Vol. 21, No. 7. pp. 5301-5314.

Bibtex

@article{59d92c5b0f7d45f78b0415d67033a41c,
title = "Measurement report: comparison of wintertime individual particles at ground level and above the mixed layer in urban Beijing",
abstract = "Beijing has been suffering from frequent severe air pollution events, with concentrations affected significantly by the mixed-layer height. Major efforts have been made to study the physico-chemical properties, compositions, and sources of aerosol particles at ground level. However, little is known about the morphology, elemental composition, and mixing state of aerosol particles above the mixed layer. In this work, we collected individual aerosol particles simultaneously at ground level (2 m above ground) and above the mixed layer in urban Beijing (within the Atmospheric Pollution and Human Health in a Chinese Megacity, APHH-Beijing, 2016 winter campaign). The particles were analyzed offline by transmission electron microscopy coupled with energy dispersive X-ray spectroscopy. Our results showed that the relative number contribution of mineral particles to all measured particles was much higher during non-haze periods (42.5 %) than haze periods (18.1 %); in contrast, internally mixed particles contributed more during haze periods (21.9 %) than non-haze periods (7.2 %) at ground level. In addition, more mineral particles were found at ground level than above the mixed-layer height. Around 20 % of individual particles showed core-shell structures during haze periods, whereas only a few core-shell particles were observed during non-haze periods (2 %). The results showed that the particles above the mixed layer were more aged, with a larger proportion of organic particles originating from coal combustion. Our results indicate that a large fraction of the airborne particles above the mixed layer come from surrounding areas influenced by coal combustion activities. This source contributes to the surface particle concentrations in Beijing when polluted air is mixed down to the ground level.",
author = "Wenhua Wang and Longyi Shao and Claudio Mazzoleni and Yaowei Li and Simone Kotthaus and Sue Grimmond and Janarjan Bhandari and Jiaoping Xing and Xiaolei Feng and Mengyuan Zhang and Zongbo Shi",
note = "Funding Information: National Natural Science Foundation of China (grant nos. 42075107 and 42065007); the International Cooperation Projects of the National Natural Science Foundation of China (grant no. 41571130031); the China Scholarship Council (grant no. Funding Information: Financial support. This research has been supported by the Publisher Copyright: {\textcopyright} Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",
year = "2021",
month = apr,
day = "7",
doi = "10.5194/acp-21-5301-2021",
language = "English",
volume = "21",
pages = "5301--5314",
journal = "Atmospheric Chemistry and Physics",
issn = "1680-7316",
publisher = "Copernicus Publications",
number = "7",

}

RIS

TY - JOUR

T1 - Measurement report

T2 - comparison of wintertime individual particles at ground level and above the mixed layer in urban Beijing

AU - Wang, Wenhua

AU - Shao, Longyi

AU - Mazzoleni, Claudio

AU - Li, Yaowei

AU - Kotthaus, Simone

AU - Grimmond, Sue

AU - Bhandari, Janarjan

AU - Xing, Jiaoping

AU - Feng, Xiaolei

AU - Zhang, Mengyuan

AU - Shi, Zongbo

N1 - Funding Information: National Natural Science Foundation of China (grant nos. 42075107 and 42065007); the International Cooperation Projects of the National Natural Science Foundation of China (grant no. 41571130031); the China Scholarship Council (grant no. Funding Information: Financial support. This research has been supported by the Publisher Copyright: © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/4/7

Y1 - 2021/4/7

N2 - Beijing has been suffering from frequent severe air pollution events, with concentrations affected significantly by the mixed-layer height. Major efforts have been made to study the physico-chemical properties, compositions, and sources of aerosol particles at ground level. However, little is known about the morphology, elemental composition, and mixing state of aerosol particles above the mixed layer. In this work, we collected individual aerosol particles simultaneously at ground level (2 m above ground) and above the mixed layer in urban Beijing (within the Atmospheric Pollution and Human Health in a Chinese Megacity, APHH-Beijing, 2016 winter campaign). The particles were analyzed offline by transmission electron microscopy coupled with energy dispersive X-ray spectroscopy. Our results showed that the relative number contribution of mineral particles to all measured particles was much higher during non-haze periods (42.5 %) than haze periods (18.1 %); in contrast, internally mixed particles contributed more during haze periods (21.9 %) than non-haze periods (7.2 %) at ground level. In addition, more mineral particles were found at ground level than above the mixed-layer height. Around 20 % of individual particles showed core-shell structures during haze periods, whereas only a few core-shell particles were observed during non-haze periods (2 %). The results showed that the particles above the mixed layer were more aged, with a larger proportion of organic particles originating from coal combustion. Our results indicate that a large fraction of the airborne particles above the mixed layer come from surrounding areas influenced by coal combustion activities. This source contributes to the surface particle concentrations in Beijing when polluted air is mixed down to the ground level.

AB - Beijing has been suffering from frequent severe air pollution events, with concentrations affected significantly by the mixed-layer height. Major efforts have been made to study the physico-chemical properties, compositions, and sources of aerosol particles at ground level. However, little is known about the morphology, elemental composition, and mixing state of aerosol particles above the mixed layer. In this work, we collected individual aerosol particles simultaneously at ground level (2 m above ground) and above the mixed layer in urban Beijing (within the Atmospheric Pollution and Human Health in a Chinese Megacity, APHH-Beijing, 2016 winter campaign). The particles were analyzed offline by transmission electron microscopy coupled with energy dispersive X-ray spectroscopy. Our results showed that the relative number contribution of mineral particles to all measured particles was much higher during non-haze periods (42.5 %) than haze periods (18.1 %); in contrast, internally mixed particles contributed more during haze periods (21.9 %) than non-haze periods (7.2 %) at ground level. In addition, more mineral particles were found at ground level than above the mixed-layer height. Around 20 % of individual particles showed core-shell structures during haze periods, whereas only a few core-shell particles were observed during non-haze periods (2 %). The results showed that the particles above the mixed layer were more aged, with a larger proportion of organic particles originating from coal combustion. Our results indicate that a large fraction of the airborne particles above the mixed layer come from surrounding areas influenced by coal combustion activities. This source contributes to the surface particle concentrations in Beijing when polluted air is mixed down to the ground level.

UR - http://www.scopus.com/inward/record.url?scp=85103786869&partnerID=8YFLogxK

U2 - 10.5194/acp-21-5301-2021

DO - 10.5194/acp-21-5301-2021

M3 - Article

AN - SCOPUS:85103786869

VL - 21

SP - 5301

EP - 5314

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

SN - 1680-7316

IS - 7

ER -