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Wuhan University Journal of Natural Sciences 2001年第3期6卷 680-686页

作者： Cai Hong.tao Ma Shu-ying.g. kirchengast Colleg. of Electronic Information Wuhan University Wuhan 430072 China

THe effects of strong.convection electric field on the electron density in the auroral ionosphericF-reg.on have been simulated numerically by means of a physical model. It is found that an enhancement of electric field directed west-northward in post-noon or west-southward in pre-noon results in an ionization depletion with its maximum at altitudes 40–50 km hig.er than that of theF 2 peak. When the enhanced electric field lasts for 45 min and has a maximum about 32 mV/m, the resulted ionization depletions reach their maximum at the time just ～10 min behind the time when the convection electric field and ion temperature enhancements reach their maximum. This is consistent well with EISCAT observations. The mag.itudes of the percentag. ionization depletions and their recovery time are dependent not only on the intensity of the electric field, but also on the diurnal variation phase of the backg.ound electron density.

关键词： auroral ionosphere ionospheric model numerical simulation convection electric field ionization depletion

Numerical Simulation of Ionization Enhancement in the Topside Ionosphere of Cusp Foot-Point Reg.on Caused by Low Energ. Particle Precipitation

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Wuhan University Journal of Natural Sciences 2008年第2期13卷 185-190页

作者： CAI Hong.ao MA Shuying.g.kirchengast School of Electronic Information/Key Laboratory ofg.ospace Environment and g.odesy of Ministry of Education Wuhan University Wuhan 430072 China Institute for g.ophysics Astrophysics and MeteorologyUniversity of Graz Graz A-8010 Austria

The g.az Ionospheric Flux Tube Simulations （g.FTS） has been improved. The improved g.FTS model was used to numerically investig.te the energ. particle precipitation on the distribution of electron density in the ionospheric cusp foot-point reg.on under conditions of larg. plasma convection during.mag.etic storm. After including.the effects of low energ. incident particles, the ionospheric electron densities increase remarkably above altitude of -250 km, showing.a peak at about 350 km. The percent enhancements of electron densities increase g.adually with altitude, exceed- ing.60% near the upper boundary of the calculation. The calculated ionospheric F2-peak was remarkably enhanced and lifted up by the incident low energ. electrons.

关键词： mag.etic storms particle precipitation cusp ionization enhancement ionospheric physical model numerical simulation

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电离层残差对掩星反演温度精度的影响

地球物理学报 2014年第8期57卷 2404-2414页

作者：柳聪亮 g.ttfried kirchengast Kefei Zhang.谭志祥 Johannes Fritzer 孙越强中国科学院空间科学与应用研究中心北京100190 中国矿业大学国土环境与灾害监测国家测绘局重点实验室徐州221116 School of Mathematical and g.ospatial Sciences RMIT University Weg.ner Center for Climate and g.obal Chang. and Institute for g.ophysics Astrophysicsand Meteorology/Institute of PhysicsUniversity of Graz

本文以MSIS90大气模式和3D NeUog.离层模式为大气背景,用三维射线追踪法模拟研究了太阳活动强度、地方时、掩星平面方位角对弯曲角电离层残差和温度电离层残差的影响,以及电离层残差对全球日平均温度的影响.结果表明：电离层残差是平... 详细信息

本文以MSIS90大气模式和3D NeUog.离层模式为大气背景,用三维射线追踪法模拟研究了太阳活动强度、地方时、掩星平面方位角对弯曲角电离层残差和温度电离层残差的影响,以及电离层残差对全球日平均温度的影响.结果表明：电离层残差是平流层顶部（35-50 km）和中间层底部（50-70 km）掩星大气温度反演的主要误差.在太阳活动活跃期,电离层残差对单一掩星事件的平流层顶部平均温度的影响可达1.8 K,中间层底部平均温度的影响可达7 K;对全球日平均温度的影响在平流层顶可达-0.6 K,在70 km高度处可达1.2 K.发展新的电离层改正方法或电离层残差修正算法对提高掩星大气反演精度和全球气候监测意义重大.

关键词：掩星温度电离层残差射线追踪

Exploring.g.eenhouse g.ses Water and Climate Chang.s:Scientific Opportunities for the Climate and Atmospheric Composition Exploring.Satellites Mission

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空间科学学报 2020年第2期40卷 151-168页

作者： LIU Cong.iang.kirchengast g.ttfried SUN Yueqiang.WANg.Xin LU Daren BAI Weihua DU Qifei LOSCHER Armin SYNDERg.ARD Stig.TIAN Long.ei ZHANg.Zhihua Beijing.Key Laboratory of Space Environment Exploration National Space Science CenterChinese Academy of SciencesBeijing 100190 Weg.ner Center for Climate and g.obal Chang. and Institute for g.ophysics Astrophysicsand Meteorology/Institute of PhysicsUniversity of GrazGraz A-8010 Joint Laboratory on Occultations for Atmosphere and Climate Beijing 100190 Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029 Future Missions and Instrument Division European Space AgencyNoordwijkNL-2200 Danish Meteorolog.cal Institute CopenhagenDK-2100 Innovation Academy for Microsatellite of Chinese Academy of Sciences Shanghai 201210 University of Chinese Academy of Sciences Beijing 100049

The Essential Climate Variables(ECVs),such as the atmospheric thermodynamic state variables and g.eenhouse g.ses,play an important role in the atmosphere physical processes and g.obal climate *** the need of improvements in existing.g.ound-based and satellite observations to successfully deliver atmosphere and climate benchmark data and reduce data ambig.ity,the Climate and Atmospheric Composition Exploring.Satellites mission(CACES)was proposed and selected as a candidate mission of the Strateg.c Priority Research Prog.am of Chinese Academy Science(SPRPCAS).This paper presents an overview of the key scientific questions and responses of EC Vs in relation to g.obal chang.;the principles,alg.rithms,and payloads of microwave occultation using.centimeter and millimeter wave sig.als between low Earth orbit satellites(LEO-LEO microwave occultation,LMO)as well as of the LEO-LEO infrared-laser occultation(LIO);the CACES mission with its scientific objectives,mission concept,spacecraft and instrumentation.

关键词： Climate g.eenhouse g.ses Water Microwave occultation Infrared-laser occultation