Department of Climate and Space Sciences and Engineering in the College of Engineering at the University of Michigan


Tong Shi
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Tong Shi

Graduate Student


Office: 2134C


BS, Astronomy (DII), Nanjing Univ


Simulating the Initiation and Liftoff Phases of CMEs

Personal Introduction

I'm not productive for a long time, so the anticipation is that my home page will not be updated for the next few months, at least.

Specializations and Research Interests

  • Coronal Mass Ejection (CME) Earth Arrival Time Prediction

      CMEs are massive eruptions of solar plasma that propagate in the interplanetary space. They can cause adverse geomagnetic disturbances if are Earth-directed. So we would like to accurately predict their arrival time at the Earth, with a simple and fast kinematics method (rather than time-consuming yet not-so-accurate simulations). We make a statistical study of 21 Earth-directed CMEs by reconstructing their initial speeds with the Graduated Cylindrical Shell model based on multi-perspective images and formulating their interplanetary motions with the drag force model. We show significantly imporved prediction results with an error of only 6.8 hours. Thus, it provides a neat method of space weather forecast of 1–5 days following the occurrence of CMEs.

Honors, Awards and Accomplishments

  • NASA Earth and Space Science Fellowship
  • Youxiu Biyesheng & Youxiu Biyelunwen (summa cum laude?)
  • CUPT Second Prize, UPC Silver & MCM Honorable (I guess no one knows these...)


Shi, T., Wang, Y. K., Wan, L., Cheng, X., Ding, M. D. & Zhang, J. 2015, ApJ, 806, 271 (link)

Wan, L., Cheng, X., Shi, T., Su, W. & Ding, M. D. 2016, ApJ, 826, 174 (link)

Updated: 2018-10-02