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Xiaotian (Jim) Xu

Profile picture for Xiaotian (Jim) Xu

Contact Information

M3002-C Natural History Building
1301 W Green Street
Urbana, IL 61801 USA
Graduate Research Assistant
Advisor: Dr. Nicole Riemer


Hi, I am currently a third-year Ph.D. candidate at Department of Atmospheric Science, University of Illinois at Urbana-Champaign (UIUC), under supervision of Prof. Nicole Riemer. Before that, I worked as a full-time research assistant in Prof. Yanxu Zhang’s group in School of Atmospheric Science at Nanjing university (NJU) from Dec. 2019 to Jun. 2021. I received my M.S. degree in Environmental Science and Management at the Hong Kong University of Science and Technology (HKUST) in Nov 2019, for thesis conducted in the Atmospheric Chemistry Group of Prof. Jianzhen Yu. and B.Eng. degree in Environmental Engineering at Shanxi University (SXU) in 2018.

Research Interests

Atmospheric Chemistry



Ph.D. Atmospheric Science, University of Illinois at Urbana-Champaign (Aug 2021 - present)

M.S. Environmental Sciences & Management, The Hong Kong University of Science and Technology (Nov 2019)

B.S. Environmental Engineering, Shanxi University (June 2018)


Awards and Honors

2023 Fall, Samuel, Berle D. and Jeffrey A. Schlesinger Travel Grant

2023 Spring, Samuel, Berle D. and Jeffrey A. Schlesinger Travel Grant                                                                                                                                                              


Professional Experience

University of Illinois Urbana-Champaign                                                                                                                                         Aug. 2021 – present

Graduate Research Assistant, Department of Atmospheric Science                                                            Supervisor: Prof. Nicole Riemer

Nanjing University                                                                                                                                                                                  Dec. 2019 – Jun. 2021

Research Assistant, School of Atmospheric Science                                                                                             Supervisor: Prof. Yanxu Zhang


Recent Publications

Xiaotian Xu, Jeffery Curtis, Nicole Riemer, Investigating impact of surfactants on cloud condensation nuclei activity with a particle-resolved aerosol model, International Aerosol Modeling Algorithms Conference, Davis, CA, Dec 2023 (Oral)

Xiaotian Xu, Nicole Riemer, Quantifying the impact of organic films on cloud condensation nuclei activity using a particle-resolved model, American Chemical Society Spring Meeting, Indianapolis, IN, Mar 2023 (Poster)

Xiaotian Xu, Nicole Riemer, Quantifying Impact of Organic Films on Cloud Condensation Nuclei Activity, Midwest Student Conference for Atmospheric Research, Urbana, IL, Oct 2022  (Poster)

Xiaotian Xu, Peng Zhang, Shaojian Huang, Zhengcheng Song, Yiming Peng, Xu Feng, Haipeng Lin, Tzung-May Fu, Yanxu Zhang*: Modeling the high-mercury wet deposition in the southeastern US with WRF-GC-Hg v1.0, Geoscientific Model Development, 15, 3845–3859,, 2022.

Yanbin Zhao, Kung Zhang*, Xiaotian Xu, Huizhong Shen*, Yanxu Zhang, Guofeng Shen. Substantial changes in Nitrogen Dioxide and Ozone after excluding meteorological impacts during the COVID-19 Outbreak in mainland China. Environmental Science & Technology Letters. 2020, 7(6), 402-408. [chosen as the best selection of ES&T Letters in 2020]