Huixin Liu

Ph.D. Thesis

    Title: High-latitude Ionosphere and Its Response to Magnetic Storms
      Advisers: Prof. K. Schlegel; Prof. S. Y. Ma

    Publications in peer-reviewed journals

    1. C. Stolle, Huixin Liu, Low-latitude ionosphere and ionospehre: decadal observations from the CHAMP mission, AGU monograph, 2012, in press.
    2. S. Tulasi Ram, N. Balan, B. Veenadhari, S. Gurubaran, S. Ravindran, T. Tsugawa, Huixin Liu, K. Niranjan and T. Nagatsuma, First observational evidence for opposite zonal electric fields in equatorial E and F region altitudes during a geomagnetic storm period, J. Geophys. Res., 117, doi:10.1029/2012JA018045, 2012, in press.
    3. Miyoshi, Y., H. Jin, H. Fujiwara, H, Shinagawa, Huixin Liu, Wave-4 structure of the neutral density in the thermosphere and its relation to atmospheric tides, J. Atmos. Solar-Terres. Phys.,  2012, in press.
    4. Miyoshi, Y., H. Fujiwara, H. Jin, H, Shinagawa, Huixin Liu, Numerical simulation of the equatorial wind jet in the thermosphere, J. Geophys. Res., 117, A03309, doi:10.1029/2011JA017373,  2012.
    5. Huixin Liu, M. Yamamoto, S. Tulasi Ram, T. Tsugawa, Y. Otsuka, C. Stolle, E. Doornbos, K. Yumoto, T. Nagatsuma, Equatorial Electrodynamics and Neutral Background in the Asian Sector During the 2009 Stratospheric Sudden Warming, J. Geophys. Res., 116, A08308, doi:10.1029/2011JA016607, 2011.
    6. Huixin Liu, E. Doornbos, M. Yamamoto, S. Tulasi Ram, Strong Thermospheric Cooling During the 2009 Major Stratosphere Warming, Geophys. Res. Lett., 38, L12102, doi:10.1029/2011GL047898, 2011.
    7. Huixin Liu, M. Yamamoto, Weakening of the mid-latitude summer night anomaly during geomagnetic storms, Earth. Planets and Space, 63, 371-375, 2011.
    8. Stolle, C., Huixin Liu, V. Trulik, H. Luehr, P. Solar flux variation of the electron temperature morning overshoot in the equatorial F region, J. Geophys. Res., 116, A04308, doi:10.1029/2010JA016235, 2011.
    9. Lühr, H. J. Park, P. Ritter, Huixin Liu, In-situ CHAMP observations of the ionosphere-thermosphere coupling, Space Sci. Rev., doi:10.1007/s11214-011-9798-4, 2011.
    10. Tulasi Ram, S., M. Yamamoto, Huixin Liu, B. Veenadhari, S. Alex, Comment on “Westward electric field penetration to the dayside equatorial ionosphere during the main phase of the geomagnetic storm on 22 July 2009” by V. Sreeja et al., J. Geophys. Res., 116, A06315, doi:10.1029/2011JA016634, 2011.
    11. Kondo, T., A. Richmond, Huixin Liu, J. Lei, S. Watanabe, On the formation of a fast thermospheric zonal wind at the magnetic dip equator, Geophys. Res. Lett., 38,  L10101, doi:10.1029/2011GL047255,  2011.
    12. Miyoshi, Y., H. Fujiwara, H. Jin, H, Shinagawa, Huixin Liu, K. Terada, Model study on the formation of the equatorial mass density anomaly in the thermosphere, J. Geophys. Res., 116, A05322, doi:10.1029/2010JA016315,  2011.
    13. Balan, N., M. Yamamoto, J. Y. Liu, Y. Otsuka, Huixin Liu, H. Luehr, New aspects of thermospheric and ionospheric storms revealed by CHAMP, J. Geophys. Res., 116, A07305, doi:10.1029/2010JA016399,  2011.
    14. Thampi, S. V., M. Yamamoto, C. Lin, Huixin Liu, Tomographic observations of the ionosphere over Japan during summer - Comparison with FORMOSAT3/COSMIC measurements, Radio. Sci., RS3001, doi:10.1029/2010RS004431, 2011.
    15. Thampi, S. V., N. Balan, C. Lin, Huixin Liu, M. Yamamoto, Mid-latitude summer nighttime anomaly (MSNA) – observations and model simulations, Ann. Geophys.,  29, 157-165, 2011.
    16. Huixin Liu, S. V. Thampi, M. Yamamoto, Phase reversal of the diurnal cycle in the mid-latitude ionosphere, J. Geophys. Res., 115, A01305, doi:10.1029/2009JA014689, 2010.
    17. T. Adachi, M. Yamaoka, M. Yamamoto, Y. Otsuka, Huixin Liu, C. Hsiao, A. Chen, R. Hsu, Midnight latitude-altitude distribution of 630-nm airglow in the Asian sector measured with Formosat-2/ISUAL, J. Geophys. Res., 115, A09315, doi:10.1029/2009JA015147, 2010.
    18. S. V. Thampi, M. Yamamoto, Huixin Liu, S. Saito, Y. Otsuka, A. K. Patra, Nighttime-like Quasi Periodic echoes induced by a partial solar eclipse, Geophys. Res. Lett., 37, L09107, doi:10.1029/2010GL042855, 2010.
    19. Huixin Liu, M. Yamamoto, H. Luhr, Wave-4 pattern of the equatorial mass density anomaly- A thermospheric signature of tropical deep convection, Geophys. Res. Lett., 36, L18104, doi:10.1029/2009GL039865, 2009.
    20. S. V. Thampi, C. Lin, Huixin Liu, M. Yamamoto, First Tomographic Observations of the Mid-latitude Summer Nighttime Anomaly (MSNA) over Japan, J. Geophys. Res., 114, A10318, doi:10.1029/2009JA014439, 2009.
    21. Huixin Liu, H. Luhr, S. Watanabe, A solar terminator wave in thermospheric wind and density simultaneously observed by CHAMP, Geophys. Res. Lett., 36, L10109, doi:10.1029/2009GL038165, 2009.
    22. Huixin Liu, S. Watanabe, T. Kondo, Fast wind jet at the Earth's dip equator, Geophys. Res. Lett., 36, L08103, doi:10.1029/2009GL037377, 2009.
    23. Huixin Liu, S. Watanabe, Seasonal variation in the longitudinal structure of the equatorial ionosphere: does it reflect tidal influences from below? J. Geophys. Res., 113, A08315, doi:10.1029/2008JA013027, 2008.
    24. Forster, M., S. Rentz, W. Kohler, Huixin Liu, S. E. Haaland, IMF dependence of high-latitude thermospheric wind pattern derived from CHAMP cross-track measurements, Ann. Geophys., 26, 1581-1595, 2008.
    25. Huixin Liu, C. Stolle, M. Foerster, S. Watanabe, Solar activity dependence of the electron density at 400 km at equatorial and low latitudes observed by CHAMP, J. Geophys. Res., 112, A11311,doi:10.1029/2007JA012616, 2007.
    26. Huixin Liu, H. Lühr, S. Watanabe, W. Koehler, C. Manoj, Contrasting behavior of the thermosphere and ionosphere in resposne to the Oct. 28, 2003 solar flare, J. Geophys. Res., 112, A07305, doi:10.1029/2007JA012313, 2007.
    27. Huixin Liu, H. Lühr, S. Watanabe, Climatology of the Equatorial Thermospheric Mass Density Anomaly, J. Geophys. Res., 112, A05305, doi:10.1029/2006JA012199, 2007.
    28. Huixin Liu, C. Stolle, S. Watanabe, T. Abe, M. Rother, D. Cooke, Evaluation of the IRI Model Using CHAMP Observations in Polar and Equatorial Regions, Adv. in Space. Res., Vol. 39, 904-909, 2007.
    29. H. Lühr, S. Rentz, P. Ritter, Huixin Liu, K. Kausler, Averaged thermospheric wind patterns over polar regions, as observed by CHAMP, Ann. Geophys., 25, 1093–1101, 2007.
    30. S. Sato, Huixin Liu, S. Watanabe, Y. Ogawa, Ion upflow observed in the polar ionosphere, Geophysical bulletin of Hokkaido University, 70, 13–25, 2007.
    31. Huixin Liu, H. Lühr, S. Watanabe, V. Henize, W. Koehler, P. Visser, Zonal Winds in the Equatorial Upper Thermosphere: Decomposing the Solar Flux, Geomagnetic Activity, and Seasonal Dependencies, J. Geophys. Res., 111, A07307, doi:10.1029/2005JA011415, 2006.
    32. Huixin Liu, H. Lühr, Strong disturbance of the upper thermospheric density due to magnetic storms: CHAMP observations, J. Geophys. Res., Vol. 110, A09S29, doi:10.1029/2004JA010908, 2005.
    33. Huixin Liu, H. Lühr, V. Henize, W. Köhler, Global distribution of the thermospheric total mass density derived from CHAMP, J. Geophys. Res., Vol. 110, No. A4, A04301, doi:10.1029/2004JA010741, 2005.
    34. Huixin Liu, Gang Lu, Velocity shear-related ion upflows in the low-altitude ionosphere, Ann. Geophysicae, Vol. 22, 1149-1153, SRef-ID: 1432-0576/ag/2004-22-1149, 2004.
    35. Huixin Liu, H. Lühr, W. Köhler, The enhancement of the thermospheric density during the Sept. 25-26, 2001 Magnetic Storm, in Earth observation with CHAMP, eds. C. Reigber, H. Lühr, P. Schwintzer, J. Wickert, Springer, Berlin, 366-370, 2004.
    36. S.-Y. Ma, H.T. Cai, Huixin Liu, K. Schlegel, Positive storm effects in the dayside polar ionospheric F-region observed by EISCAT and ESR during the magnetic storm of the May 15, 1997. Ann. Geophysicae, Vol. 20, 1377-1384, 2002.
    37. S.-Y. Ma, Huixin Liu, K. Schlegel, A comparative Study of Magnetic Storm Effects on the Ionosphere in Both Polar Cap and the Auroal Oval (1) - F-region Negative storm, Chinese Journal of Geophysics, Vol. 45, 156-165, 2002.
    38. Huixin Liu, S.-Y. Ma, K. Schlegel, Diurnal, seasonal, and geomagnetic variations of large field-aligned ion upflows in the high-latitude ionospheric F region, J. Geophys. Res., Vol. 106, 24,651-24,662, 2001.
    39. S.-Y. Ma, P. Liu, Huixin Liu, K. Schlegel, J.-S. Xu, A reversed plasma convection flow in the polar ionosphere observed with EISCAT radar, Chinese Journal of Geophysics, Vol. 44, 444-451, 2001.
    40. Huixin Liu, K. Schlegel, S.-Y. Ma, Combined ESR and EISCAT observations of the dayside polar cap and auroral oval during the May 15, 1997 storm, Ann. Geophysicae, Vol. 18, 1067 - 1072, 2000.
    41. Huixin Liu, S.-Y. Ma , K. Schlegel, Magnetic storm effects in the auroral ionosphere: two case studies, Wuhan University Journal of Natural Science, Vol. 5, 181 - 186, 2000.
    42. S.-Y. Ma, Huixin Liu, K. Schlegel, J.-S. Xu, Storm-time Joule heating of auroral thermosphere and ionization depletion in the F-region - EISCAT radar observation, Chinese Journal of Space Science, Vol. 19, 34 - 41, 1999.
    43. Huixin Liu, S.-Y. Ma, J. -S. Xu, Auroral ionospheric conductivity and energy flux of precipitating particles during magnetic storms, Annual of Chinese Geophysical Society, pp. 255-257, 1998.
    44. S.-Y. Ma, Huixin Liu, J.-S Xu, K. Schlegel, K. C. Yeh, Auroral thermosphere heating and electron density depletion in the F-region at high- and mid-latitudes during two intense magnetic storms, Ann. Geophysicae, Vol. 16, supplement, pp. 845-845, 1998.

    Publications in peer-reviewed books

    1.  Lühr, H. Huixin Liu, J. Park, New aspects of the coupling between thermosphere and ionosphere, with special regards to CHAMP mission results, Aeronomy of the Earth's atmosphere and ionosphere, eds. Abdu, M. A., Pancheva, D., Springer, 303-316, 2011.

    2.     Huixin Liu, H. Lühr, W. Köhler, The enhancement of the thermospheric density during the Sept. 25-26, 2001 Magnetic Storm, in Earth observation with CHAMP, eds. C. Reigber, H. Lühr, P. Schwintzer, J. Wickert, Springer, Berlin, 366-370, 2004.

    Invited talks

    1. International Reference Ionosphere (IRI) workshop, Roquetes/Spain, June, 2005, Huixin Liu, C. Stolle, M. Rother, T. Abe, H. Lühr, S. Watanabe, Global distribution of the electron density and temperature in the F region observed by CHAMP. (Invited)

    2. 2nd European Space Weather Week, ESA/ESTEC, 14 – 18 Nov. 2005, H. Lühr, Huixin Liu, Space Weather dependence of the air drag as observed by CHAMP. (Invited)

    3. International living with a star (ILWS) workshop, Goa/India, Feb 19-24, 2006, H. Lühr, Huixin Liu, The thermospheric response to geomagnetic storms.  (Invited)

    4. European Geophysical Union, Wien/Austria, April 2-7, 2006, H. Lühr, Huixin Liu, Zonal winds in the thermosphere observed by CHAMP: diurnal variation and climatology. (Invited)

    5.  AOGS, Singapor, July, 2006, Huixin Liu, S. Watanabe, H, Lühr, Climatology of the equatorial neutral wind observed by CHAMP. (Invited)

    6. AOGS, Singapor, July, 2006, S. Watanabe, Huixin Liu, T., Abe, T. Ono, Y. Otsuka, A. Saito, M. Yamamoto, Ionosphere-thermosphere coupling in middle and low latitudes. (Invited)

    7.  CPEA international symposium, Kyoto, March, 2007, Huixin Liu, Strong Magnetic Control of the Thermospheric Density and Wind - an Updated View from CHAMP. (Invited)

    8. COSPAR, Canada, July 14-20, 2008, S. Watanabe, Huixin Liu, H. Luhr, Longitudinal distribution of electron density and temperature in ionospheric F-region. (invited)

    9. COSPAR, Canada, July 14-20, 2008, C. Stolle, Huixin Liu, M. Forster, Climatological features of the ionosphere as derived from CHAMP observations and from IRI predictions. (invited)

    10.  AOGS, Singapore, Aug. 11-15, 2009, Huixin Liu, Fast wind jet at the Earth’s dip equator. (invited)

    11. IRI workshop, Kagoshima, Japan, Nov. 2-6, 2009, Huixin Liu, Phase reversal of the diurnal cycle in the middle latitude ionosphere. (invited)

    12.  IRI workshop, Kagoshima, Japan, Nov. 2-6, 2009, C. Stolle, Huixin Liu, Solar cycle variation of the electron temperature. (invited)

    13. JPGU annual assembly, Makuhari/Japan, May. 23-28, 2010. Huixin Liu, Wave-4 structure of the thermosphere. (invited)

    14. COSPAR, Bremen/Germany, July 18-24, 2010, Huixin Liu, Phase reversal of the diurnal cycle in the mid-latitude ionosphere. (invited)

    15.  COSPAR, Bremen/Germany, July 18-24, 2010, S. Watanabe, Huixin Liu, T. Kondo, Ionosphere-thermosphere coupling in low latitude region. (invited)

    16. AP-RASC’10, Toyama,/Japan, Sept. 23-26, 2010, Huixin Liu, Competition of the ionospheric and lower atmospheric forcing on the thermosphere and its dimension dependence. (invited)

    17. Space science and technology annual meeting, Shizuoka/Japan, Nov. 17-19, 2010, Huixin Liu, Vertical coupling in the Earth’s atmosphere. (invited)

    18. IUGG general assembly, 28 June - 7 July, 2011, Melbourne/Australia, Huixin Liu, Upper thermosphere coupling with the lower atmosphere: known and unknown. (invited).

    19. AOGS, 8 August - 12 August, 2011, Taipei/Taiwan, Huixin Liu, Equatorial Electrodynamics and Neutral Background in the Asian sector during SSW2009, (invited).

    20. AGU2011 fall meeting, 4 Dec. - 9 Dec., 2011, San Francisco/USA, Huixin Liu, Solar activity dependence of the thermosphere and ionosphere: contribution from 10 years of CHAMP observations (invited).

    21.  ISEA13, 12 Mar. - 16 Mar., 2012, Paracas/Peru, Huixin Liu, Y. Yamazaki, M. Yamamoto, K. Yumoto, Upper atmosphere response to major and minor stratosphere sudden warming (invited).

    Last modified 2012 Sept. 14