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Wei Du
Researcher at University of Helsinki
Publications - 15
Citations - 251
Wei Du is an academic researcher from University of Helsinki. The author has contributed to research in topics: Aerosol & Haze. The author has an hindex of 7, co-authored 15 publications receiving 91 citations. Previous affiliations of Wei Du include Peking University & Beijing University of Chemical Technology.
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Journal ArticleDOI
Continuous and comprehensive atmospheric observations in Beijing: a station to understand the complex urban atmospheric environment
Yongchun Liu,Chao Yan,Zemin Feng,Feixue Zheng,Xiaolong Fan,Yusheng Zhang,Chang Li,Ying Zhou,Zhuohui Lin,Yishou Guo,Ying Zhang,Li Ma,Wenshuo Zhou,Zhikun Liu,Lubna Dada,Kaspar Dällenbach,Jenni Kontkanen,Runlong Cai,Tommy Chan,Biwu Chu,Wei Du,Lei Yao,Yonghong Wang,Jing Cai,Juha Kangasluoma,Tom V. Kokkonen,Joni Kujansuu,Anton Rusanen,Chenjuan Deng,Yueyun Fu,Rujing Yin,Xiaoxiao Li,Yiqun Lu,Yiliang Liu,Chaofan Lian,Dongsen Yang,Weigang Wang,Maofa Ge,Yuesi Wang,Douglas R. Worsnop,Heikki Junninen,Hong He,Veli-Matti Kerminen,Jun Zheng,Lin Wang,Jingkun Jiang,Tuukka Petäjä,F. Bianchi,Markku Kulmala +48 more
TL;DR: In this article, the key step in the provision of required tools for the society to tack clean air quality has attracted attention from all levels of the civil society, including the government.
Journal ArticleDOI
The promotion effect of nitrous acid on aerosol formation in wintertime in Beijing : the possible contribution of traffic-related emissions
Yongchun Liu,Yusheng Zhang,Chaofan Lian,Chao Yan,Zeming Feng,Feixue Zheng,Xiaolong Fan,Yan Chen,Weigang Wang,Biwu Chu,Biwu Chu,Yonghong Wang,Jing Cai,Wei Du,Kaspar R. Daellenbach,Juha Kangasluoma,Juha Kangasluoma,F. Bianchi,F. Bianchi,Joni Kujansuu,Joni Kujansuu,Tuukka Petäjä,Wang Xuefei,Bo Hu,Yuesi Wang,Maofa Ge,Hong He,Markku Kulmala,Markku Kulmala +28 more
TL;DR: Based on field measurements in downtown Beijing, this paper showed that the photolysis of nitrous acid (HONO) could promote the formation of organic and nitrate aerosol in wintertime Beijing as evidenced by the growth of the mass concentration of organic aerosols linearly increasing as a function of consumed HONO from early morning to noon.
Journal ArticleDOI
Size-segregated particle number and mass concentrations from different emission sources in urban Beijing
Jing Cai,Jing Cai,Biwu Chu,Lei Yao,Chao Yan,Chao Yan,Liine Heikkinen,Liine Heikkinen,Feixue Zheng,Chang Li,Xiaolong Fan,Shaojun Zhang,Daoyuan Yang,Yonghong Wang,Tom V. Kokkonen,Tom V. Kokkonen,Tommy Chan,Tommy Chan,Ying Zhou,Lubna Dada,Lubna Dada,Yongchun Liu,Hong He,Pauli Paasonen,Pauli Paasonen,Joni T. Kujansuu,Joni T. Kujansuu,Tuukka Petäjä,Tuukka Petäjä,Claudia Mohr,Juha Kangasluoma,Juha Kangasluoma,F. Bianchi,F. Bianchi,Yele Sun,Philip Croteau,Douglas R. Worsnop,Veli-Matti Kerminen,Veli-Matti Kerminen,Wei Du,Wei Du,Markku Kulmala,Markku Kulmala,Kaspar R. Daellenbach,Kaspar R. Daellenbach +44 more
TL;DR: In this paper, the authors used chemical fingerprints and particle size distributions measured at the same site in urban Beijing from April to July 2018 to improve estimates of the contribution of primary sources to the particle number and mass concentrations.
Journal ArticleDOI
Particle growth with photochemical age from new particle formation to haze in the winter of Beijing, China.
Biwu Chu,Lubna Dada,Yongchun Liu,Lei Yao,Yonghong Wang,Wei Du,Jing Cai,Kaspar Dällenbach,Xuemeng Chen,Pauli Simonen,Ying Zhou,Chenjuan Deng,Yueyun Fu,Rujing Yin,Haiyan Li,Xu-Cheng He,Zeming Feng,Chao Yan,Juha Kangasluoma,F. Bianchi,Jingkun Jiang,Joni Kujansuu,Veli-Matti Kerminen,Tuukka Petäjä,Hong He,Markku Kulmala +25 more
TL;DR: The evolution of particles with the photochemical age provides new insights into understanding how particles originating from NPF transform to haze pollution.
Journal ArticleDOI
Unprecedented Ambient Sulfur Trioxide (SO3) Detection: Possible Formation Mechanism and Atmospheric Implications
Lei Yao,Lei Yao,Xiaolong Fan,Chao Yan,Theo Kurtén,Kaspar R. Daellenbach,Chang Li,Yonghong Wang,Yishuo Guo,Lubna Dada,Matti P. Rissanen,Jing Cai,Yee Jun Tham,Qiaozhi Zha,Shaojun Zhang,Wei Du,Miao Yu,Feixue Zheng,Ying Zhou,Jenni Kontkanen,Tommy Chan,Jiali Shen,Joni Kujansuu,Joni Kujansuu,Juha Kangasluoma,Juha Kangasluoma,Jingkun Jiang,Lin Wang,Douglas R. Worsnop,Tuukka Petäjä,Veli-Matti Kerminen,Yongchun Liu,Biwu Chu,Biwu Chu,Hong He,Markku Kulmala,Markku Kulmala,Markku Kulmala,F. Bianchi,F. Bianchi +39 more
TL;DR: It is suggested SO3 could be formed from the catalytic oxidation of SO2 on the surface of traffic-related black carbon, which results in significant H2SO4 formation in the early morning and thus promotes sub-2.5 nm particle formation.