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姓名： 乐会军 性别： 男
职称： 研究员 学位： 博士
电话： 010-82998750 传真： 010-62010846
Email： lehj@ mail.iggcas.ac.cn 邮编： 100029
地址： 北京朝阳区北土城西路19号，中科院地质与地球物理研究所
更多信息：
 
简历：

　　乐会军，博士，研究员，国家优秀青年基金获得者。主要从事电离层及中高层大气物理研究，主要研究领域为空间天气事件中电离层空间环境扰动的分析及模拟。2004年毕业于武汉大学物理学院，2009年于中科院地质与地球物理研究所获空间物理学博士学位。目前在国内外发表SCI论文68篇（第一作者及通讯作者22篇）,SCI引用1021次。曾主持博士后基金、自然科学基金青年基金项目、自然科学基金面上项目、自然基金委优秀青年基金、国家重点研发计划课题等科研项目。
Research ID：A-1448-2012
Research Gate (Le huijun)

  • 2004年6月毕业于武汉大学，电子科学与技术专业，获学士学位
  • 2009年6月毕业于中国科学院地质与地球物理研究所，获空间物理学博士学位。
  • 2009年6月—2011年12月，中科院地质与地球物理所博士后。
  • 2009年12月—2010年6月，在台湾中央大学太空科学所访问交流。
  • 2012年1月—2018年12月，中科院地质与地球物理所副研究员
  • 2019年1月至今，中科院地质与地球物理所研究员
 
学科类别：
空间物理学
 
研究方向：
电离层空间天气学，包括地球电离层空间环境、行星空间环境、电离层数值模拟及数据同化等。
 
职务：
 
社会任职：
 
承担科研项目情况：
  1. 《地球物理探测卫星数据分析处理技术与地震预测应用研究》，国家重点研发计划课题，2018.12-2021.12.
  2. 《基于电离层数据同化提取热层信息并研究 其长期及气候学变化》，国家自然基金委面上项目，2018.1-2021.12
  3. 《电离层空间天气》，国家自然基金委优秀青年基金，2019.1-2021.12
  4. 《电离层热层对太阳耀斑的耦合响应》，国家自然基金委面上项目，2014.1-2017.12
  5. 《热层及电离层耀斑响应的统计和模拟研究》，国家自然基金委青年科学基金，2011.1-2013.12
  6. 《电离层及热层大气对日食响应研究》，中国博士后基金一等资助，2010.1-2011.12
  7. 《电离层及热层大气对日食响应研究》，中国博士后基金特别资助，2011.1-2012.12。
 
获奖及荣誉：
  • 2007年 第十二届全国日地空间物理学术讨论会优秀青年论文奖
  • 2009年 中科院院长优秀奖
  • 2010年 中科院优秀博士论文提名奖
  • 2014年 入选中科院青年创新促进会
  • 2017年 中国地球物理学会傅承义青年科技奖
  • 2017年 中国地震局防震减灾优秀成果二等奖（排名第9）
  • 2018年 国家自然科学基金“优秀青年科学基金”
 
代表论著：
  1. Le, H., N. Yang, L. Liu, Y. Chen, and H. Zhang (2017), The latitudinal structure of night-time ionospheric TEC and its empirical orthogonal functions model over North American sector, J. Geophys. Res. Space Physics, 122, 963–977, doi:10.1002/2016JA023361.
  2. Le, H., Liu, L., Ren, Z., Chen, Y., and Zhang, H., Wan., W. (2016), A modeling study of global ionospheric and thermospheric responses to extreme solar flare, Journal of Geographysics Research-Space Physics, 121, 832–840, doi:10.1002/2015JA021930.
  3. Le, H., Liu, L., Ren, Z., Hu., L, Chen, Y., and Wan., W., (2016), An ionospheric assimilation model along a meridian plane, Journal of Atmospheric and Solar-Terrestrial Physics, 148, 125-135.
  4. Le Huijun, Jing Liu, Biqiang Zhao, Libo Liu (2015), Recent progress in ionospheric earthquake precursor study in China: A brief review, Journal of Asian Earth Sciences, 114, 420-430
  5. Le Huijun, Zhipeng Ren, Libo Liu, Yiding Chen and Hui Zhang (2015), Global thermospheric disturbances induced by a solar flare: a modeling study, Earth Planets and Space, 67, 3, DOI 10.1186/s40623-014-0166-y
  6. Le Huijun, Libo Liu, Yiding Chen, Hui Zhang, and Weixing Wan (2014), Modeling study of nighttime enhancements in F region electron density at low latitudes, J. Geophys. Res., 119, 6648–6656, doi:10.1002/2013JA019295.
  7. Le Huijun, Libo Liu, Jann-Yeng Liu, Biqiang Zhao, Yiding Chen, Weixing Wan (2013), The ionospheric anomalies prior to the M9.0 Tohoku-Oki earthquake, Journal of Asian Earth Sciences, 62, 476–484.
  8. Le Huijun, L. Liu, Y. Chen, and W. Wan (2013), Statistical analysis of ionospheric responses to solar flares in the solar cycle 23, J. Geophys. Res., 118, 576–582, doi:10.1029/2012JA017934.
  9. Le Huijun, L. Liu, and W. Wan (2012), An analysis of thermospheric density response to solar flares during 2001–2006, J. Geophys. Res., 117, A03307, doi:10.1029/2011JA017214.
  10. Le Huijun, Liu, J.Y., Liu, L. (2011). A statistical analysis of ionospheric anomalies before 736 M6.0+ earthquakes during 2002–2010. Journal of Geophysical Research 116, A02303, doi:10.1029/2010JA015781.
  11. Le Huijun, L. Liu, H. He, and W. Wan (2011), Statistical analysis of solar EUV and X-ray flux enhancements induced by solar flares and its implication to upper atmosphere, J. Geophys. Res., 116, A11301, doi:10.1029/2011JA016704.
  12. Le Huijun, L. Liu, and Y. Chen(2011),Comment on the paper "Total solar eclipse of July 22, 2009: Its impact on the total electron content and ionospheric electron density in the Indian zone"by Sharmaetal, J. Atmos. Solar-Terr. Phys.,73, 2034-2038.
  13. Le Huijun, L. Liu, F. Ding, Z. Ren, Y. Chen, W. Wan, B. Ning, G. Xu, M. Wang, G. Li, B. Xiong,, and L. Hu (2010), Observations and modeling of the ionospheric behaviors over the east Asia zone during the 22 July 2009 solar eclipse, J. Geophys. Res., 115, A10313, doi:10.1029/2010JA015609.
  14. Le Huijun, L. Liu, X. Yue, W. Wan, and B. Ning (2009), Latitudinal dependence of the ionospheric response to solar eclipse, J. Geophys. Res., 114, A07308, doi:10.1029/2009JA014072.
  15. Le Huijun, L. Liu, X. Yue, and W. Wan (2009), The ionospheric behavior in conjugate hemispheres during the 3 October 2005 solar eclipse, Ann. Geophys., 27, 179–184.
  16. Le Huijun, L. Liu, X. Yue, and W. Wan (2008), The ionospheric responses to the 11 August 1999 solar eclipse: Observations and modeling, Ann. Geophys., 26, 107–116, doi:10.5194/angeo-26-107-2008.
  17. Le Huijun, L. Liu, X. Yue, and W. Wan (2008), The mid‐latitude F2 layer during solar eclipses: Observations and modeling, J. Geophys. Res., 113, A08309, doi:10.1029/2007JA013012.
  18. Le Huijun, L. Liu, B. Chen, J. Lei, X. Yue, and W. Wan (2007), Modeling the responses of the middle latitude ionosphere to solar flares, J. Atmos. Sol. Terr. Phys., 69, 1587–1598, doi:10.1016/j.jastp.2007.06.005.
  19. Liu, J. Y., *H. Le, Y. I. Chen, C. H. Chen, L. Liu, W. Wan, Y. Z. Su, Y. Y. Sun, C. H. Lin, and M. Q. Chen (2011), Observations and simulations of seismoionospheric GPS total electron content anomalies before the 12 January 2010 M7 Haiti earthquake, J. Geophys. Res., 116, A04302, doi:10.1029/2010JA015704.
  20. Yang, N., *Le, H., Liu, L., Zhang, R., (2018) Statistical behavior of the longitudinal variations of the evening topside midlatitude trough position in both Northern and Southern Hemispheres , Journal of Geophysical Research: Space Physics, 123, 3983–3997. https://doi.org/10.1029/2017JA025048
  21. Yang Na, *Le Huijun, Liu Libo (2015), Statistical analysis of ionospheric mid-latitude trough over the Northern Hemisphere derived from GPS total electron content data, Earth Planets and Space, 67, 196, DOI 10.1186/s40623-015-0365-1
  22. Yang N., *Le Huijun, L. Liu (2016), Statistical analysis of the mid？latitude trough position during different categories of magnetic storms and different storm intensities, Earth Planets and Space, 68, 171, Doi: 10.1186/s40623-016-0554-6.
  23. Balan, N., Liu, L., and Le, H., (2018), A brief review of equatorial ionization anomaly and ionospheric irregularities. Earth Planet. Phys., 2(4), 257–275. http://doi.org/10.26464/epp2018025
  24. Balan, N., Li, Q., Liu, L., Le, H., (2018), An introduction to equatorial electrodynamics and a review of an additional layer at low latitudes , Journal of Atmospheric and Solar-Terrestrial Physics,
  25. Lei, J., Dang, T., Wang, W., Burns, A., Zhang, B., & Le, H. (2018). Long-lasting response of the global thermosphere and ionosphere to the 21 August 2017 solar eclipse. Journal of Geophysical Research: Space Physics, 123, 4309–4316.https://doi.org/10.1029/2018JA025460
  26. Chen, Y., Liu, L., Le, H. & Wan, W., (2018), Responses of solar irradiance and the ionosphere to an intense activity region , Journal of Geophysical Research: Space Physics, 123, 2116–2126. https://doi.org/10.1002/2017JA024765
  27. Li, Q., L. Liu, N. Balan, H. Huang, R. Zhang, Y. Chen and H. Le, (2018), Longitudinal structure of the mid-latitude ionosphere using COSMIC electron density profiles, Journal of Geophysical Research: Space Physics, 123, 8766–8777. https://doi.org/ 10.1029/2017JA024927.
  28. Tang, D., Lei, J., Wang, W., Zhang, B., Le, H., Burns, A., Wu, Q., Ruan, H., Dou, X., Wan, W. (2018), Global Responses of the Coupled Thermosphere and Ionosphere System to the August 2017 Great American Solar Eclipse , Journal of Geophysical Research: Space Physics, 123, 7040–7050. https://doi.org/10.1029/2018JA025566
  29. Zhang, R., Liu, L., Balan, N., Le, H., Chen, Y., & Zhao, B. (2018). Equatorial ionospheric disturbance field-aligned plasma drifts observed by C/NOFS. Journal of Geophysical Research: Space Physics, 123, 4192–4201. https://doi.org/10.1029/2018JA025273
  30. Zhang, R., L. Liu, H. Le, and Y. Chen (2017), Equatorial ionospheric electrodynamics during solar flares, Geophys. Res. Lett., 44, 4558–4565, doi:10.1002/2017GL073238.
  31. Chen, Y., L. Liu, H. Le, W. Wan, and H. Zhang (2017), The effect of zonal wind reversal around sunset on ionospheric interhemispheric asymmetry at March equinox of a solar maximum year 2000, J. Geophys. Res. Space Physics, 122, 4726–4735, doi:10.1002/2017JA023874.
  32. Kuai, J., L. Liu, J. Lei, J. Liu, B. Zhao, Y. Chen, H. Le, Y. Wang, and L. Hu (2017), Regional differences of the ionospheric response to the July 2012 geomagnetic storm, J. Geophys. Res. Space Physics, 122, 4654–4668, doi:10.1002/2016JA023844.
  33. Liu, L., H. Liu, H. Le, Y. Chen, Y.-Y. Sun, B. Ning, L. Hu, W. Wan, N. Li, and J. Xiong (2017), Mesospheric temperatures estimated from the meteor radar observations at Mohe, China, J. Geophys. Res. Space Physics, 122, 2249–2259, doi:10.1002/2016JA023776.
  34. Liu, L., H. Liu, Y. Chen, H. Le, Y.-Y. Sun, B. Ning, L. Hu, and W. Wan (2017), Variations of the meteor echo heights at Beijing and Mohe, China, J. Geophys. Res. Space Physics, 122, 1117–1127, doi:10.1002/2016JA023448.
  35. Chen, Y., L. Liu, H. Le, W. Wan, and H. Zhang (2016), Equatorial ionization anomaly in the low-latitude topside ionosphere: Local time evolution and longitudinal difference, J. Geophys. Res. Space Physics, 121, 7166–7182, doi:10.1002/2016JA022394.
  36. Chen, Y., L. Liu, H. Le, W. Wan, and H. Zhang (2016), The global distribution of the dusk-to-nighttime enhancement of summer NmF2 at solar minimum, J. Geophys. Res. Space Physics, 121, 7914–7922, doi:10.1002/2016JA022670.
  37. Huang, H., L. Liu, Y. Chen, H. Le, and W. Wan (2016), A global picture of ionospheric slab thickness derived from GIM TEC and COSMIC radio occultation observations, J. Geophys. Res. Space Physics, 121, 867–880, doi:10.1002/2015JA021964.
  38. Kuai, J., L. Liu, J. Liu, S. Sripathi, B. Zhao, Y. Chen, H. Le, and L. Hu (2016), Effects of disturbed electric fields in the lowlatitude and equatorial ionosphere during the 2015 St. Patrick's Day storm, J. Geophys. Res. Space Physics, 121, 9111–9126, doi:10.1002/2016JA022832.
  39. Zhang, R., L. Liu, H. Le, and Y. Chen (2016), Evidence and effects of the sunrise enhancement of the equatorial vertical plasma drift in the F region ionosphere, J. Geophys. Res. Space Physics, 121, 4826–4834, doi:10.1002/2016JA022491.
  40. Zhang, H., et al. (2016), Alfvén wings in the lunar wake: The role of pressure gradients, J. Geophys. Res. Space Physics, 121, 10,698–10,711, doi:10.1002/2016JA022360.
  41. Chen Yiding, Liu Libo, Le Huijun, Wan Weixing, Zhang Hui (2015), Dusk-to-nighttime enhancement of mid-latitude NmF2 in local summer: inter-hemispheric asymmetry and solar activity dependence, , Ann. Geophys., 33, 711–718, doi:10.5194/angeo-33-711-2015
  42. Chen Yiding, Liu Libo, Le Huijun, Zhang hui (2015), Discrepant responses of the global electron content to the solar cycle and solar rotation variations of EUV irradiance, Earth Planets and Space, 67, 80, DOI 10.1186/s40623-015-0251-x.
  43. Chen Yiding, Liu Libo, Le Huijun, Wan Weixing, Zhang Hui (2015), NmF2 enhancement during ionospheric F2 region nighttime: A statistical analysis based on COSMIC observations during the 2007–2009 solar minimum, J. Geophys. Res. Space Physics, 120, 10,083–10,095, doi:10.1002/2015JA021652.
  44. Huang,He, Yiding Chen, Libo Liu, Huijun Le, and Weixing Wan (2015), An empirical model of the topside plasma density around 600 km based on ROCSAT-1 and Hinotori observations, J. Geophys. Res. Space Physics, 120, 4052–4063, doi:10.1002/2014JA020940.
  45. Kuai Jiawei, L. Liu, J. Liu, B. Zhao, Y. Chen, H. Le, and W. Wan (2015), The long-duration positive storm effects in the equatorial ionosphere over Jicamarca, J. Geophys. Res. Space Physics, 120, 1311–1324, doi:10.1002/2014JA020552.
  46. Zhang, R., L. Liu, Y. Chen, and H. Le (2015), The dawn enhancement of the equatorial ionospheric vertical plasma drift, J. Geophys. Res. Space Physics, 120, 10688–10697, doi:10.1002/2015JA021972.
  47. Zhu ChangBo, H. Zhang, Y. S. Ge, Z. Y. Pu, W. L. Liu, W. X. Wan, L. B. Liu, Y. D. Chen, H. J. Le, and Y. F. Wang (2015), Dipole tilt angle effect on magnetic reconnection locations on the magnetopause, J. Geophys. Res. Space Physics, 120, doi:10.1002/2015JA020989.
  48. Chen Yiding, Liu Libo, Le Huijun, Wan Weixing (2014), How does ionospheric TEC vary if solar EUV irradiance continuously decreases? Earth Planets and Space, 66, 52, DOI: 10.1186/1880-5981-66-52.
  49. Chen Yiding, Liu Libo, Le Huijun, Wan Weixing (2014), Geomagnetic activity effect on the global ionosphere during the 2007-2009 deep solar minimum, J. Geophys. Res. Space Physics, 119, 3747-3754, DOI: 10.1002/2013JA019692.
  50. Liu Libo, He Huang, Yiding Chen, Huijun Le, Baiqi Ning, Weixing Wan, and Hui Zhang (2014), Deriving the effective scale height in the topside ionosphere based on ionosonde and satellite in situ observations, J. Geophys. Res. Space Physics, 119, 8472–8482, doi:10.1002/2014JA020505.
  51. Liu Libo, Y. Chen, H. Le, B. Ning, W. Wan, J. Liu, L. Hu (2013), A case study of postmidnight enhancement in F-layer electron density over Sanya of China, J. Geophys. Res. Space Physics, 118, 4640–4648, doi: 10.1002/jgra.50423.
  52. Ren Zhipeng, W. Wan, L. Liu, H. Le, and M. He (2012), Simulated midlatitude summer nighttime anomaly in realistic geomagnetic fields, J. Geophys. Res., 117, A03323, doi:10.1029/2011JA017010.
  53. Liu Libo, J. Yang, H. Le, Y. Chen, W. Wan, and C.-C. Lee (2012), Comparative study of the equatorial ionosphere over Jicamarca during recent two solar minima, J. Geophys. Res., 117, A01315, doi:10.1029/2011JA017215.
  54. Ren Zhipeng, W. Wan, L. Liu, and H. Le (2012), TIME3D-IGGCAS: A new three-dimension mid- and low-latitude theoretical ionospheric model in realistic geomagnetic fields, J. Atmos. Sol. Terr. Phys., 80, 258-266, doi:10.1016/j. jastp.2012.02.001.
  55. Zhao Biqiang, W. Wan, B. Reinisch, X. Yue, H. Le, J. Liu, and B. Xiong (2011), Features of the F3 layer in the low-latitude ionosphere at sunset, J. Geophys. Res., 116, A01313, doi:10.1029/2010JA016111.
  56. Xiong Bo, W. Wan, L. Liu, P. Withers, B. Zhao, B. Ning, Y. Wei, H. Le, Z. Ren, Y. Chen, M. He, and J. Liu (2011), Ionospheric response to the X-class solar flare on 7 September 2005, J. Geophys. Res., 116, A11317, doi:10.1029/2011JA016961.
  57. Ren Zhipeng, W. Wan, L. Liu, Y. Chen, and H. Le (2011), Equinoctial asymmetry of ionospheric vertical plasma drifts and its effect on F-region plasma density, J. Geophys. Res., 116, A02308, doi:10.1029/2010JA016081.
  58. Liu Libo, Y. Chen, H. Le, V. I. Kurkin, N. M. Polekh, and C.-C. Lee (2011), The ionosphere under extremely prolonged low solar activity, J. Geophys. Res., 116, A04320, doi:10.1029/2010JA016296.
  59. Liu Libo, H. Le, Y. Chen, M. He, W. Wan, and X. Yue (2011), Features of the middle- and low-latitude ionosphere during solar minimum as revealed from COSMIC radio occultation measurements, J. Geophys. Res., 116, A09307, doi:10.1029/2011JA016691.
  60. He Maosheng, L. Liu, W. Wan, B. Ning, B. Zhao, J. Wen, X. Yue, and H. Le (2009), A study of the Weddell Sea Anomaly observed by FORMOSAT-3/COSMIC, J. Geophys. Res., 114, A12309, doi:10.1029/2009JA014175.
  61. Ding Feng, W. Wan, B. Ning, L. Liu, H. Le, G. Xu, M. Wang, G. Li, Y. Chen, Z. Ren, B. Xiong, L. Hu, X. Yue, B. Zhao, F. Li, and M. Yang (2010), GPS TEC response to the 22 July 2009 total solar eclipse in East Asia, J. Geophys. Res., 115, A07308, doi:10.1029/2009JA015113.
  62. Chen Yiding, L. Liu, and H. Le (2008), Solar activity variations of nighttime ionospheric peak electron density, J. Geophys. Res., 113, A11306, doi:10.1029/2008JA013114.
  63. Liu Libo, H. Le, W. Wan, M. P. Sulzer, J. Lei, and M.-L. Zhang (2007), An analysis of the scale heights in the lower topside ionosphere based on the Arecibo incoherent scatter radar measurements, J. Geophys. Res., 112, A06307, doi:10.1029/2007JA012250.
  64. Yang Jun, Liu Libo, Chen Yiding, Le Huijun (2012) Does the equatorial ionospheric peak electron density really record the lowest during the recent deep solar minimum? Chinese Journal of Geophysics Vol.55, No.5, 2012, pp: 457–465.
  65. 杨君, 刘立波, 陈一定, 乐会军 (2012)．赤道地区电离层foF2在第23/24太阳活动周极低年期间创造了极低纪录? 地球物理学报, 55(9): 2826-2834, doi: 10.6038/j.issn.0001-5733.2012.09.002.
  66. Liu Libo, Wan Weixing, Chen Yiding, Le Huijun (2011), Solar activity effects of the ionosphere: A brief review. Chinese Sci Bull, 56: 1202-1211, doi: 10. 1007/s11434-010-4226-9.
  67. 刘立波, 万卫星, 陈一定, 乐会军 (2011), 电离层与太阳活动性关系, 科学通报,56(7), 466-477.
  68. Yue Xinan, Wan Weixing, Liu Libo, Le Huijun, Chen Yiding, and Yu Tao (2008), Development of a middle and low latitude theoretical ionospheric model and an observation system data assimilation experiment, Chinese. Sci. Bull., 53(1), 94– 101.
  69. 乐新安, 万卫星,刘立波, 乐会军, 陈一定, 余涛 (2007), 中低纬电离层理论模式的构建和一个观测系统数据同化试验, 科学通报, 52(18), 2180-2186.
  70. Liu Libo, Chen Y., Le H., Liu J., Wan W. (2014), Some investigations on the ionosphere during 2012–2014 in China, Chinese J. Space Sci., 34, 648-668, doi:10.11728/cjss2014.05.648.
  71. Liu Libo, Wan Weixing Chen Yiding Le Huijun Zhao Biqiang, (2012), Recent Progresses on Ionospheric Climatology Investigations, Chinese J. Space Sci., 32(5): 665-680.
  72. Liu J Y, Chen C H, Tsai H F, Le H., (2013), A statistical study on seismo-ionospheric anomalies of the total electron content for the period of 56 M>6.0 earthquakes occurring in China during 1998？2012. Chinese J. Space Sci., 33(3): 258-269.
  73. 李强，宁百齐，赵必强，丁锋，张锐，师宏波，乐会军，李国主，李建勇，韩宇飞 (2012), 基于陆态网络GPS数据的电离层空间天气监测与研究，地球物理学报，55(7): 2193: 2202, doi: 10.6038/j.issn.0001-5733.2012.07.006
 

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