Mei-Ching H Fok

Photo of MEI-CHING FOK

Mei-Ching H Fok

  • (AST, FIELDS & PARTICLES)
  • 301.286.1083 | 301.286.1433
  • NASA/GSFC
  • Mail Code: 673
  • Greenbelt , MD 20771
  • Employer: NASA
  • Research Interests

    M-C Fok Research Interests

    Dr. Fok's main research interests are studies of the radiation belt and the ring current during geomagnetic active periods, understanding the mechanisms responsible for their intensification and decay by numerical modeling and data analysis. She has developed a comprehensive kinetic model that can compute and predict the energetic plasma fluxes in the inner magnetosphere. Dr. Fok was a participating scientist of the IMAGE mission and is the Project Scientist of the TWINS mission. She is heavily involved in neutral atom imaging. The modeling tools she developed have contributed greatly in interpreting images from the neutral atom imagers on IMAGE and TWINS.

    Positions/Employment

    2001 - Present

    Astrophysicist

    Geospace Physics Laboratory, NASA/GSFC
    1995 - 2001

    Staff Scientist

    USRA, Universities Space Research Association
    1993 - 1995

    Resident Research Associate

    NRC, Marshall Space Flight Center

    Education

    B.S., Physics, The Chinese University of Hong Kong, 1980
    Diploma in Education, The Chinese University of Hong Kong, 1984
    M.S., Physics, Eastern Michigan University, 1987
    Ph.D, Atmospheric and Space Sciences, The University of Michigan, 1993

    Awards

    NASA Exceptional Scientific Achievement Medal (2011), “For creation of state-of-the-art numerical models that account for the complex couplings between the solar wind, radiation belts, ring current, ionosphere and magnetosphere.”

    Publications

    Refereed

    Liemohn, M. W., S. Xu, S. Yan, M. C. Fok, and Q. Zheng. 2012. "Time scales for localized radiation belt injections to become a thin shell,...." Geophys Monogr Ser; AGU; Washington D C; edited by D Summers et al 199 161–175 [ 10.1029/2012GM001335]

    Zheng, Q., Y. Zheng, M.-C. Fok, and A. Lui. 2012. "Electron energy diffusion and advection due to non-linear electron-chorus wave interactions." Journal of Atmospheric and Solar-Terrestrial Physics 80 152-160 [doi:10.1016/j.jastp.2012.01.011]

    Fok, M. C., T. E. Moore, S. P. Slinker, et al. J. A. Fedder, D. C. Delcourt, M. Nosé, and S. Chen. 2011. "Modeling the super storm in November 2003." J Geophys Res 116 A00J170- [ 10.1029/2010JA015720]

    Keesee, A. M., N. Buzulukova, J. Goldstein, et al. D. J. McComas, E. E. Scime, H. Spence, M. Fok, and K. Tallaksen. 2011. "Remote observations of ion temperatures in the quiet time magnetosphere." Geophysical Research Letters 38 03104 [Full Text (Link)] [10.1029/2010GL045987]

    Ebihara, Y., M. Fok, T. J. Immel, and P. C. Brandt. 2011. "Rapid decay of storm time ring current due to pitch angle scattering in curved field line." Journal of Geophysical Research 116 03218 [Full Text (Link)] [10.1029/2010JA016000]

    Zheng, Y., A. T. Lui, and M.-C. Fok. 2010. "Effects of plasma sheet properties on storm-time ring current." Journal of Geophysical Research 115 (A08220): [doi:10.1029/2009JA014806 ]

    Zheng, Y., P. C. Brandt, A. T. Lui, and M.-C. Fok. 2008. "On ionospheric trough conductance and subauroral polarization streams: Simulation results." Journal of Geophysical Research 113 (A04209): [doi:10.1029/2007JA012532]

    Zheng, Y., A. T. Lui, and M.-C. Fok. 2008. "Viewing perspective in energetic neutral atom intensity." Journal of Geophysical Research 113 (A09217): [doi:10.1029/2008JA013070]

    Zheng, Y., A. T. Lui, M.-C. Fok, et al. B. J. Anderson, P. C. Brandt, T. J. Immel, and D. G. Mitchell. 2006. "Relationship between Region 2 field-aligned current and the ring current: Model results." Journal of Geophysical Research 111 (A11S06): [doi:10.1029/2006JA011603]

    Zheng, Y., A. T. Lui, M.-C. Fok, et al. B. J. Anderson, P. C. Brandt, T. J. Immel, and D. G. Mitchell. 2006. "Relationship between Region 2 field-aligned current and the ring current: Model results." Journal of Geophysical Research 111 (A11S06): [doi:10.1029/2006JA011603]

    Zheng, Y., A. T. Lui, X. Li, and M.-C. Fok. 2006. "Characteristics of 2-6 MeV electrons in the Slot region and inner radiation belt." Journal of Geophysical Research 111 (A10204): [doi:10.1029/2006JA011748]

    Fok, M. C., Y. Ebihara, T. E. Moore, D. M. Ober, and K. A. Keller. 2005. "Geospace Storm Processes Coupling the Ring Current; Radiation Belt and Plasmasphere; in Inner Magnetosphere Interactions: New Perspectives from Imaging." Geophys Monogr Ser; edited by J Burch et al; AGU - Washington D C 159 207-220

    Fok, M. C., Y. Ebihara, and T. E. Moore. 2005. "Inner magnetospheric plasma interactions and coupling with the ionosphere." Adv Polar Upper Atmos Res 19 106-134

    Zheng, Y., M.-C. Fok, and G. V. Khazanov. 2003. "A Radiation Belt – Ring Current Forecasting Model." Space Weather 1 (3): 1013 [doi:10.1029/2003SW000007]

    Fok, M. C., R. A. Wolf, and R. W. Spiro. 2001. "Comprehensive computational model of the Earth's ring current." T E Moore J. Geophys. Res. 106 [ 8417-8424]

    Fok, M. C., and T. E. Moore. 1998. "Drift-shell splitting in an asymmetric magnetic field in Geospace Mass and Energy Flow: Results From the ISTP Program." Geophys Monogr Ser; edited by J L Horwitz et al; AGU - Washington D C 104 327-331

    Fok, M. C., and T. E. Moore. 1997. "Ring current modeling in a realistic magnetic field configuration." Geophys Res Lett 24 1775-1778

    Fok, M. C., T. E. Moore, and M. E. Greenspan. 1996. "Ring current development during storm main phase." J Geophys Res 101 15-

    Fok, M. C., T. E. Moore, J. U. Kozyra, G. C. Ho, and D. C. Hamilton. 1995. "Three-dimensional ring current decay model." J Geophys Res 100 9619-

    Fok, M. C., P. D. Craven, T. E. Moore, and P. G. Richards. 1995. "Ring current - plasmasphere coupling through Coulomb collisions - in Cross-Scale Coupling in Space Plasmas." Geophys Monogr Ser - edited by J L Horwitz; N Singh; and J L Burch; AGU - Washington D. C. 93 [ 161]

    Fok, M. C., J. U. Kozyra, A. F. Nagy, C. E. Rasmussen, and G. V. Khazanov. 1993. "Decay of equatorial ring current ions and associated aeronomical consequences." J Geophys Res 98 19-

    Refereed

    Liemohn, M. W., S. Xu, S. Yan, M. C. Fok, and Q. Zheng. 2012. "Time scales for localized radiation belt injections to become a thin shell,...." Geophys Monogr Ser; AGU; Washington D C; edited by D Summers et al 199 161–175 [ 10.1029/2012GM001335]

    Zheng, Q., Y. Zheng, M.-C. Fok, and A. Lui. 2012. "Electron energy diffusion and advection due to non-linear electron-chorus wave interactions." Journal of Atmospheric and Solar-Terrestrial Physics 80 152-160 [doi:10.1016/j.jastp.2012.01.011]

    Fok, M. C., T. E. Moore, S. P. Slinker, et al. J. A. Fedder, D. C. Delcourt, M. Nosé, and S. Chen. 2011. "Modeling the super storm in November 2003." J Geophys Res 116 A00J170- [ 10.1029/2010JA015720]

    Keesee, A. M., N. Buzulukova, J. Goldstein, et al. D. J. McComas, E. E. Scime, H. Spence, M. Fok, and K. Tallaksen. 2011. "Remote observations of ion temperatures in the quiet time magnetosphere." Geophysical Research Letters 38 03104 [Full Text (Link)] [10.1029/2010GL045987]

    Ebihara, Y., M. Fok, T. J. Immel, and P. C. Brandt. 2011. "Rapid decay of storm time ring current due to pitch angle scattering in curved field line." Journal of Geophysical Research 116 03218 [Full Text (Link)] [10.1029/2010JA016000]

    Zheng, Y., A. T. Lui, and M.-C. Fok. 2010. "Effects of plasma sheet properties on storm-time ring current." Journal of Geophysical Research 115 (A08220): [doi:10.1029/2009JA014806 ]

    Zheng, Y., P. C. Brandt, A. T. Lui, and M.-C. Fok. 2008. "On ionospheric trough conductance and subauroral polarization streams: Simulation results." Journal of Geophysical Research 113 (A04209): [doi:10.1029/2007JA012532]

    Zheng, Y., A. T. Lui, and M.-C. Fok. 2008. "Viewing perspective in energetic neutral atom intensity." Journal of Geophysical Research 113 (A09217): [doi:10.1029/2008JA013070]

    Zheng, Y., A. T. Lui, M.-C. Fok, et al. B. J. Anderson, P. C. Brandt, T. J. Immel, and D. G. Mitchell. 2006. "Relationship between Region 2 field-aligned current and the ring current: Model results." Journal of Geophysical Research 111 (A11S06): [doi:10.1029/2006JA011603]

    Zheng, Y., A. T. Lui, M.-C. Fok, et al. B. J. Anderson, P. C. Brandt, T. J. Immel, and D. G. Mitchell. 2006. "Relationship between Region 2 field-aligned current and the ring current: Model results." Journal of Geophysical Research 111 (A11S06): [doi:10.1029/2006JA011603]

    Zheng, Y., A. T. Lui, X. Li, and M.-C. Fok. 2006. "Characteristics of 2-6 MeV electrons in the Slot region and inner radiation belt." Journal of Geophysical Research 111 (A10204): [doi:10.1029/2006JA011748]

    Fok, M. C., Y. Ebihara, T. E. Moore, D. M. Ober, and K. A. Keller. 2005. "Geospace Storm Processes Coupling the Ring Current; Radiation Belt and Plasmasphere; in Inner Magnetosphere Interactions: New Perspectives from Imaging." Geophys Monogr Ser; edited by J Burch et al; AGU - Washington D C 159 207-220

    Fok, M. C., Y. Ebihara, and T. E. Moore. 2005. "Inner magnetospheric plasma interactions and coupling with the ionosphere." Adv Polar Upper Atmos Res 19 106-134

    Zheng, Y., M.-C. Fok, and G. V. Khazanov. 2003. "A Radiation Belt – Ring Current Forecasting Model." Space Weather 1 (3): 1013 [doi:10.1029/2003SW000007]

    Fok, M. C., R. A. Wolf, and R. W. Spiro. 2001. "Comprehensive computational model of the Earth's ring current." T E Moore J. Geophys. Res. 106 [ 8417-8424]

    Fok, M. C., and T. E. Moore. 1998. "Drift-shell splitting in an asymmetric magnetic field in Geospace Mass and Energy Flow: Results From the ISTP Program." Geophys Monogr Ser; edited by J L Horwitz et al; AGU - Washington D C 104 327-331

    Fok, M. C., and T. E. Moore. 1997. "Ring current modeling in a realistic magnetic field configuration." Geophys Res Lett 24 1775-1778

    Fok, M. C., T. E. Moore, and M. E. Greenspan. 1996. "Ring current development during storm main phase." J Geophys Res 101 15-

    Fok, M. C., T. E. Moore, J. U. Kozyra, G. C. Ho, and D. C. Hamilton. 1995. "Three-dimensional ring current decay model." J Geophys Res 100 9619-

    Fok, M. C., P. D. Craven, T. E. Moore, and P. G. Richards. 1995. "Ring current - plasmasphere coupling through Coulomb collisions - in Cross-Scale Coupling in Space Plasmas." Geophys Monogr Ser - edited by J L Horwitz; N Singh; and J L Burch; AGU - Washington D. C. 93 [ 161]

    Fok, M. C., J. U. Kozyra, A. F. Nagy, C. E. Rasmussen, and G. V. Khazanov. 1993. "Decay of equatorial ring current ions and associated aeronomical consequences." J Geophys Res 98 19-

                                                                                                                                                                                            
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