Ryan Dewey

Ryan Dewey

Assistant Research Scientist


2134C Climate & Space Research Building 2455 Hayward Street Ann Arbor, MI 48109-2143


  • Ph.D., Space Sciences and Engineering, University of Michigan
  • M.S., Space Sciences and Engineering, University of Michigan
  • B.S., Physics and Astrophysical & Planetary Sciences, University of Colorado, Boulder

Professional Service

  • 2017 — 2019     Geospace Environment Modeling (GEM) Student Representative


I am a Research Fellow at the University of Michigan’s Climate and Space Sciences and Engineering Department leading research efforts in utilizing observational tools to address leading questions of Mercury’s magnetosphere dynamics. I am passionate about combining statistical techniques with detailed spacecraft knowledge for scientific discovery in both space and planetary sciences, particularly in comparative magnetosphere studies.


  • 2020    Outstanding Doctoral Student Research Award
  • 2018     NASA Group Achievement Award – MESSENGER Science Team
  • 2017     Outstanding Student Paper Award, AGU Fall Meeting
  • 2017     NASA Earth and Space Science Fellowship (NESSF)
  • 2016     NASA Group Achievement Award – MAVEN Science Team
  • 2015     Dwight F. Benton Fellowship
  • 2015     Gerstacker Fellowship
  • 2014     Barry M. Goldwater Scholarship
  • 2013     Outstanding Student Paper Award, AGU Fall Meeting


  1. Slavin, J. A., Middleton, H. R., Raines, J. M., Xianzhe, J., Zhong, J., Sun, W.-J., Livi, S., Imber, S. M., Poh, G.-K., Akavan-Tafti, M., Jasinski, J., DiBraccio, G. A., Dong, C., Dewey, R. M., & Mays, M. L. (2019). MESSENGER Observations of Disappearing Dayside Magnetosphere Events at Mercury. Journal of Geophysical Research: Space Physics, doi:10.1029/2019JA026892.
  2. Zhao, J. T., Sun, W.-J., Zong, Q. G., Slavin, J. A., Zhou, X. Z., Dewey, R. M., Poh, G. K., Raines, J. M. (2019). A Statsistical Study of the Force Balance and Structure in the Flux Ropes in Mercury’s Magnetotail. Journal of Geophysical Research: Space Physics, doi:10.1029/2018JA026329.
  3. Dewey, R. M., Raines, J. M., Sun, W., Slavin, J. A., & Poh, G. (2018). MESSENGER observations of fast plasma flows in Mercury’s magnetotail. Geophysical Research Letters, 45, 10,110–10,118, doi:10.1029/2018GL079056.
  4. Jakosky, B. M., [et al. including Dewey, R. M.] (2018). Loss of the Martian atmosphere to space: Present-day loss rates determined from MAVEN observations and integrated loss through time. Icarus, 315, 146-157, doi:10.1016/j.icarus.2018.05.030.
  5. Nikoukar, R., Lawrence, D. J., Peplowski, P. N., Dewey, R. M., Korth, H., Baker, D. N., & McNutt Jr., R. L. (2018). Statistical study of Mercury’s energetic electron events as observed by the Gamma-Ray and Neutron Spectrometer instrument onboard MESSENGER. Journal of Geophysical Research: Space Physics, doi:10.1029/2018JA025339.
  6. Sun, W. J., Slavin, J. A., Dewey, R. M., Raines, J. M., Fu, S. Y., Wei, Y., et al. (2018). A comparative study of the proton properties of magnetospheric substorms at Earth and Mercury in the near magnetotail. Geophysical Research Letters, 45, 7,933–7,941, doi:10.1029/2018GL079181.
  7. Zhong, J., Wei, Y., Pu, Z. Y., Wang, X. G., Wan, W. X., Slavin, J. A., Cao, X., Raines, J. M., Zhang, H., Xiao, C. J., Du, A. M., Wang, R. S., Dewey, R. M., Chai, L. H., Rong, Z. J., & Li, Y. (2018). MESSENGER Observations of Rapid and Impulsive Magnetic Reconnection in Mercury’s Magnetotail. The Astrophysical Journal Letters, 860, doi:10.3847/2041-8213/aaca92.
  8. Dewey, R. M., Slavin, J. A., Raines, J. M., Baker, D. N., & Lawrence, D. J. (2017). Energetic electron acceleration and injection during dipolarization events in Mercury’s magnetotail. Journal of Geophysical Research: Space Physics, 122, 12,170-12,188, doi:10.1002/2017JA024617.
  9. Lentz, C. L., Baker, D. N., Jaynes, A. N., Dewey, R. M., Lee, C. O., Halekas, J. S., & Brain, D. A. (2017). Statistical Similarities Between WSA-ENLIL+Cone Model and MAVEN In Situ Observations From November 2014 to March 2016. Space Weather, 16, 157-171, doi:10.1002/2017SW001671.
  10. Baker, D. N., Dewey, R. M., Lawrence, D. J., Goldsten, J. O., Peplowski, P. N., Korth, H., Slavin, J. A., Krimigis, S. M., Anderson, B. J., Ho, G. C., McNutt Jr., R. L., Raines, J. M., Schriver, D., & Solomon, S. C. (2016). Intense energetic-electron flux enhancements in Mercury’s magnetosphere: An integrated view with high-resolution observations from MESSENGER. Journal of Geophysical Research: Space Physics, 121, doi:10.1002/2015JA021778.
  11. Dewey, R. M., Baker, D. N., Mays, M. L., Brain, D. A., Jakosky, B. M., Halekas, J. S., Connerney, J. E. P., Odstrcil, D., Luhmann, J. G., & Lee, C. O. (2016). Continuous solar wind forcing knowledge: Providing continuous conditions at Mars with the WSA-ENLIL+Cone model. Journal of Geophysical Research: Space Physics, 121, 6,207-6,222, doi:10.1002/2015JA021941.
  12. Bougher, S., [et al. including Dewey, R. M.] (2015). Early MAVEN Deep Dip campaigns: First results and implications. Science, doi:10.1126/science.aad0459.
  13. Dewey, R. M., Baker, D. N., Anderson, B. J., Benna, M., Johnson, C. L., Korth, H., Gershman, D. J., Ho, G. C., McClintock, W. E., Odstrcil, D., Philpott, L., Raines, J. M., Schriver, D., Slavin, J. A., Solomon, S. C., Winslow, R. M., & Zurbuchen, T. (2015). Improving solar wind modeling at Mercury: Incorporating transient solar phenomena into the WSA-ENLIL model with the Cone extension. Journal of Geophysical Research: Space Physics, 120, 5,667-5,685, doi:10.1002/2015JA021194.
  14. Jakosky, B. M., [et al. including Dewey, R. M.] (2015). MAVEN observations of the response of Mars to an interplanetary coronal mass ejection. Science, doi:10.1126/science.aad0210.