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Chao Yan
Researcher at University of Helsinki
Publications - 150
Citations - 5612
Chao Yan is an academic researcher from University of Helsinki. The author has contributed to research in topics: Aerosol & Chemistry. The author has an hindex of 31, co-authored 107 publications receiving 3322 citations. Previous affiliations of Chao Yan include Carnegie Mellon University & Helsinki Institute of Physics.
Papers
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Journal ArticleDOI
Exploring condensable organic vapors and their co-occurrence with PM2.5 and O3 in winter over Eastern China
Yuliang Liu,Chong Liu,Wei Ni,Yuanyuan Li,Dafeng Ge,Liang-De Chen,Caijun Zhu,Lei Wang,Yuxuan Zhang,Tengyu Liu,Ximeng Qi,Jiaping Wang,Dandan Huang,Zhe Wang,Chao Yan,Xuguang Chi,Aijun Ding +16 more
TL;DR: Oxygenated organic molecules (OOMs) are important oxidation products of volatile organic compounds (VOCs) and act as key condensable vapors for new particle formation (NPF) and secondary organic aerosol (SOA) in this article .
Posted ContentDOI
Opinion: The strength of long-term comprehensive observations to meet multiple grand challenges at different environments and in the atmosphere
Johanna Tamminen,Jaana Bäck,Antti Arola,Armin Hansel,Anu-Maija Sundström,Markku Kulmala,Ekaterina Ezhova,Tom V. Kokkonen,Veli-Matti Kerminen,Tuukka Petäjä,Hanna Lappalainen,Chao Yan,Gabriel Renggli,M. W. Rowe,LIA DIETRICH,Akshata G Athreya,Daocong Dong,Maximilian Speicher,j6ftjiu952 +18 more
TL;DR: In this article , the authors describe the SMEAR (Station for Measuring Earth surface - Atmosphere Relations) concept and demonstrate its power via several examples, such as detection of new particle formation and their subsequent growth, quantifying atmosphere-ecosystem feedback loops, combining comprehensive observations with emergency science and services, as well as studying the effect of COVID restrictions on different air quality and climate variables.
Characteristics of Negative Cluster Ions in an Urban Environment
Rujing Yin,Xiaoxiao Li,Chao Yan,Runlong Cai,Ying Zhou,Juha Kangasluoma,Nina Sarnela,2. Janne,Lampilahti,Tuukka Petäjä,Veli-Matti Kerminen,Markku Kulmala,Jing Jiang +12 more
TL;DR: In this article , the authors measured negative cluster ion compositions using an atmospheric pressure interface high-resolution time- 22 of-flight mass spectrometer in urban Beijing and demonstrated the feasibility of quantifying cluster ion composition with 23 simultaneous in-situ measurements by a neutral cluster and air ion spectrometers.
Journal ArticleDOI
Underestimated Contribution of Heavy Aromatics to Secondary Organic Aerosol Revealed by Comparative Assessments Using New and Traditional Methods
Linhui Tian,Dandan Huang,Qiongqiong Wang,Shuhui Zhu,Qian Wang,Chao Yan,Wei Ni,Zhe Wang,Liping Qiao,Yuliang Liu,Xiaohui Qiao,Yishuo Guo,Penggang Zheng,Shengao Jing,Shengrong Lou,Hong Wang,Jian Zhen Yu,Cheng Huang,Yong Jie Li +18 more
Journal ArticleDOI
Drivers of High Concentrations of Secondary Organic Aerosols in Northern China during the COVID-19 Lockdowns.
Xing Chang,Haotian Zheng,Bin Zhao,Chao Yan,Yueqi Jiang,Ruolan Hu,Shaojie Song,Zhao-yang 董朝阳 Dong,Shengyue Li,Zeqi Li,Yun Zhu,Hongrong Shi,Zhe Jiang,Jia Xing,Shuxiao Wang +14 more
TL;DR: Li et al. as discussed by the authors integrated the two-dimensional volatility basis set into a state-of-the-art chemical transport model, which unprecedentedly reproduces organic aerosol (OA) components resolved by the positive matrix factorization based on aerosol mass spectrometer observations.