Group members


Principal Investigator


          Yafang Cheng

          Yafang Cheng’s research focuses on aerosols. She is
          developing and combining experimental methods, multi-scale
          modeling tools and machine learning techniques to
          elucidate the mechanisms of aerosol particle formation
          and transformation as well as the impact of aerosols on
          air quality, public health, and climate change.




Technical Staff


          Uwe Kuhn

          Sources, atmospheric transformation and sinks of climatically
          relevant trace gases of the earth’s atmosphere is focus of my





          Bruno Backes Meller

          Bruno’s research aims at understanding sources and life cycle
          of aerosols in the Amazon atmosphere, particularly the physical
          and chemical mechanisms of secondary formation. To this end,
          he works on Amazon field campaigns to measure aerosol, gas
          and cluster chemical composition using mass spectrometry.
          Bruno is an exchange student from the Institute of Physics,
          University of Sao Paulo, Brazil.


          Elizabeth Rigby

          Elizabeth studies physical and chemical properties of aerosol   
          particles using optical tweezers. She is a visiting student from
          Oberlin College, Oberlin, OH, USA.


          Ivan Eremets

          Ivan studies new particle formation at high altitude &
          aerosol-radiation-cloud interactions using WRF-Chem model.


          Jianqiang Zhu

          Using different state-of-the-art particle measurement
          instruments (Nano-SPMS, NAIS, and PSM), Jianqiang studies
          atmopsheric particle form and further growth in
          different regions, including China, Europe, and Amazon forests.
          Meanwhile, he is also working on the Nano-HTDMA
          to investigate the hygroscopicity of organic
          nano-particles and the size effect.


          Matteo Krüger

          Matteo’s research addresses the health effects of
          exposure to particulate matter with an emphasis on
          smoking and passive smoking using kinetic modeling.
          Also, he explores different applications of machine
          learning in atmospheric chemistry. Matteo is an external
          group member from Berkemeier’s Group for developing
          joint research interested in AI/ML.


          Xihao Pan

          Xihao’s research focuses on the effects of black carbon on the
          climate at high altitude. He is responsible for the data handling
          of CARIBIC-SP2, which measures the physicochemical
          properties of individual BC particles in the upper troposphere
          and lowermost stratosphere. Xihao is a PhD student,
          supported by CSC.



Postdoctoral Researchers


          Chaoqun Ma

          Chaoqun works with regional and global atmospheric chemistry
          models, as well as Data Assimilation and Deep Learning
          technologies. With these tools, he investigates different
          processes about atmospheric chemistry and their
          interactions with the Earth system.


          Ruijing Ni

          Ruijng’s research focuses on the impact of air pollution
          exposure on public health. By combining the epidemiological
          data and modeling simulations, I investigate the global
          burden of disease attributable to air pollution exposure
          (especially the particulate matter exposure).


          Chaoyang Xue

          Chaoyang’s research focuses on the trace gas
          exchange between air-sea and air-soil.


          Wenjie Wang

          Wenjie’s research focuses on ozone pollution issues
          and coupling effects between ozone and particulate
          matter in the atmosphere by applying measurement
          data and model simulations.          


          Wenjun Meng

          Wenjun’s research focuses on investigating the co-benefits
          between air pollution control and climate change mitigation. 



Visiting Scholars


         Gregory Carmichael

         Professor, Chemical and Biochemical Engineering
         Karl Kammermeyer Professor of Chemical and Biochemical
         Engineering; Professor, Applied Mathematical and
         Computational Sciences; Co-director, Center for Global and
         Regional Environmental Research
         Univeristy of Iowa, Iowa City, IA, USA





Group funding

Stefan Nordmann (postdoc, 2012-2015; now: research scientist at Environmental Protection Agency (UBA), Dessau, Germany)
Hannah Meusel (postdoc, 2017-2018; PhD student, graduated in 2017)
Jeanine Ditas (postdoc, 2014-2019)
Nan Ma (postdoc/project leader, 2016-2018; now: professor, Institute of Environmental and Climate Research (ECI), Jinan University & deputy dean of the College of Environmental Sciences, Jinan Univ.)
Qing Mu (co-advised PhD, graduated in 2018; now: tenured research scientist at Norwegian Meteorological Institute (NILU), Oslo, Norway)
Jiandong Wang (postdoc, 2016-2019; now: associate professor at Nanjing University of Information Science & Technology, Nanjing, China)
Yuxuan Zhang (postdoc, 2017-2020; exchange PhD student, graduated in 2017, funded by CSC, 2015-2016; now: assistant professor at Nanjing University, Nanjing, China 2020-2023; associate professor at the Insitute of Atmospheric Physics, Chinese Academy of Science, Beijing, China)
Wei Tao (postdoc, WRF-Chem modeling, 2018-2022; now: research associate at the Southern University of Science and Technology, Shenzhen, China)
Lixia Liu (postdoc, 2021-2022; PhD student, graduated in 2021; now: resarch assistant at Nanjing University, Nanjing, China)
Meng Li (postdoc, AOT single particle analyses, 2019-2022; now: postdoc at the University of California, San Diego, USA)
Chuchu Chen (PhD, graduated in 2022; now: researcher at Chinese Academy of Environmental Planning, Beijing, China)
Guo Li (postdoc, 2018-2023; PhD, graduated in 2018, funded by CSC; now: associate professor at the Insitute of Atmospheric Physics, Chinese Academy of Science, Beijing, China)
Guangjie Zheng (postdoc/project leader, 2019-2023; exchange PhD student, graduated in 2016, funded by CSC, 2014-2015; now: assistant professor at Tsinghua University, Beijing, China)

Other Funding

Tabish Ansari (visiting student; funded by IIT Madras, India, 2013; now: Research Associate at Research Institute for Sustainibility Helmholtz Center Potsdam, Potsdam, Germany)
Qihou Hu (visiting scientist, supported by CSC, 2016-2017, now: associate professor at the University of Science and Technology China, Hefei, China)
Yan Xiang (exchange PhD student; funded by CSC, 2016-2017; now: assistant professor at Anhui Univ., Hefei, China)
Yunping Lin (visiting scientist, funded by CSC, 2017-2018)
Pusheng Zhao (visiting scientist, funded by CSC, 2017-2018; now: senior scientist at the Insitute of Atmospheric Physics, Chinese Academy of Science, Beijing, China)
Qian Liu (visiting scientist, funded by CSC, 2017-2018)
Qiaoqiao Wang (visiting scientist, 2017-2018, now: professor at Jinan University, Guangzhou, China)
Zhibin Wang (postdoc/project leader, 2013-2017; now: professor at Zhejiang University, Hangzhou, China)
Ying Chen (exchange PhD student, graduated in 2017; funded by TROPOS, Leipzig, Germany; now: tenured assistant professor at University of Birmingham)
Ke Ding (exchange PhD student, graduated in 2019; funded by CSC, 2018; now: assistant professor at Nanjing University, Nanjing, China)
Minghui Zhang (PhD student, graducated in 2019, funded by CSC; now: Aerosol Scientist (permanent), Plair SA, Switzerland)
Xiaoxiang Wang (PhD student, graduated in 2019, funded by CSC; now: associate Professor at Shenzhen Polytechnic, Shenzhen, China)
Jiaping Wang (exchange PhD, graduated in 2019; funded by CSC, 2019; now: assistant professor at Nanjing University, Nanjing, China)
Pingqing Fu (visiting scientist, 2019; Professor at Tianjing University, Tianjin, China) 
Meng Li (postdoc, 2016-2019; now: research scientist at NOAA, USA)
Xin Wang (PhD student, graducated in 2020, funded by CSC)
Ting Lei (PhD student, graduated in 2021, funded by CSC; now: research assistant at the Institute of Chemistry, Chinese Academy of Science, Beijing, China)
Najin Kim (postdoc, BS2-CCN, 2019-2022; now: senior permanent scientist at Korea Institute of Science and Technology, Soeul, Korea)
Siwen Wang (postdoc/project leader, 2014-2022, supported by ESA project; now: associate professor Beijing Univ. of Technology, Beijing, China)
Man Yu (postdoc, 2018-2023, supported by MPIC-JNU program)
Jiani Tan (postdoc, nitrogen deposition, 2020-2023; now: assistant professor at Shanghai Univ., Shanghai, China)
Yunzhi Xu (exchange PhD student, organo-sulfate formation in urban pollution, 2022-2023; now: PhD candiate at Tsinghua University, Beijing, China)
Qinqin Yu (exchange PhD student, aerosol formation at low temperature, 2022-2023)
Wen-Chien Lee (postdoc, single particle analyses, 2022-2023; now: postdoc at the Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou, China)
Lianfang Wei (postdoc, isotopic chemistry in regional modeling, 2022-2023; now: reserach scientist at the Insitute of Atmospheric Physics, Chinese Academy of Science, Beijing, China)
Fengxia Bao (postdoc, soil HONO emission, 2019-2023; now: postdoc at the Laboratory of Atmospheric Chemistry (LAC), Paul Scherrer Institute (PSI), Switzerland) 
Siyao Yue (postdoc, bioaerosols, 2019-2023; now: postdoc at the Laboratory of Atmospheric Chemistry (LAC), Paul Scherrer Institute (PSI), Switzerland) 
Renyi Zhang (visiting scientist, 2023; university distinguished professor and Harold G. Haynes Chair at Texas A&M University, USA)


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