Positive ionospheric storm effects at Latin America longitude during the superstorm of 20-22 November 2003:revisit
作者单位：Beijing National Observatory of Space EnvironmentInstitute of Geology and GeophysicsChinese Academy of Sciences State Key Laboratory of Space WeatherChinese Academy of Sciences School of Earth and Space SciencesUniversity of Science and Technology of China Center for Atmospheric ResearchUniversity of MassachusettsLowellMAUSA
会议名称：《中国科学院地质与地球物理研究所2012年度（第12届）学术年会》
会议日期：2013年
学科分类：070802[理学-空间物理学] 07[理学] 0708[理学-地球物理学]
基 金：supported by the National Natural Science Foundation of China(41174138) the National Important Basic Research Project of China(2011CB811405) the Open Research Program of the State Key Laboratory of Space Weather,Chinese Academy of Sciences 100 Talents Programme of the Chinese Academy of Science(to J.Lei) The Jicamarca Radio Observatory is a facility of the Instituto Geofisico del Peru operated with support from the NSF Cooperative Agreement ATM-0432565 through Cornell University
关 键 词：Ionosphere(Ionospheric disturbances)
摘 要：Positive ionospheric storm effects that occurred during the superstorm on 20 November 2003 are investigated using a combination of ground-based Global Positioning System(GPS) total electron content(TEC),and the meridian chain of ionosondes distributed along the Latin America longitude of～280°*** the ground-based GPS TEC and ionosonde electron density profile data reveal significant enhancements at mid-low latitudes over the 280°E region during the main phase of the November 2003 superstorm. The maximum enhancement of the topside ionospheric electron content is 3.2-7.7 times of the bottomside ionosphere at the locations of the ionosondes distributed around the midand low ***,the height of maximum electron density exceeds 400 km and increases by 100 km compared with the quiet day over the South American area from middle to low latitudes,which might have resulted from a continuous eastward penetration electric field and storm-generated equatorward *** results do not support the conclusions of Yizengaw et al.(2006),who suggested that the observed positive storm over the South American sector was mainly the consequence of the changes of the bottomside ionosphere. The so-called unusual responses of the topside ionosphere for the November 2003 storm in Yizengaw et al.(2006) are likely associated with the erroneous usage of magnetometer and incomplete data.