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Wavenumber-4 spectral component extracted from TIMED/SABER observations

Earth and Planetary Physics 2020年第5期4卷 436-448页

作者： Xing Li WeiXing Wan jinbin cao ZhiPeng Ren Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China School of Space and Environment Beihang UniversityBeijing 100083China Key Laboratory of Space Environment Monitoring and Information Processing Ministry of Industry and Information TechnologyBeijing 100083China Beijing National Observatory of Space Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing 100029China University of the Chinese Academy of Sciences Beijing 100049China

The wavenumber spectral components WN4 at the mesosphere and low thermosphere(MLT)altitudes(70–10 km)and in the latitude range between±45°are obtained from temperature data(T)observed by the Sounding of the Atmosphere using Broadband Emission Radiometry(SABER)instruments on board the National Aeronautics and Space Administration(NASA)’s Thermosphere–Ionosphere–Mesosphere Energetics and Dynamics(TIMED)spacecraft during the 11-year solar period from 2002 to *** analyze in detail these spectral components WNk and obtain the main properties of their vertical profiles and global *** report that all of the wavenumber spectral components WNk occur mainly around 100 km altitude,and that the most prominent component is the wavenumber spectral component WN4 *** these long duration temperature data with results of previous investigations,we have found that the yearly variation of spectral component WN4 is similar to that of the eastward propagating non-migrating diurnal tide with zonal wavenumber 3(DE3)at the low latitudes,and to that of the semi-diurnal tide with zonal wavenumber 2(SE2)at the mid-latitudes:the amplitudes of the A4 are larger during boreal summer and autumn at the low-latitudes;at the mid-latitudes the amplitudes have a weak peak in *** addition,the amplitudes of component WN4 undergo a remarkable short period variation:significant day-to-day variation of the spectral amplitudes A4 occurs primarily in July and September at the *** summary,we conclude that the non-migrating tides DE3 and SE2 are likely to be the origins,at the low-latitudes and the mid-latitudes in the MLT region,respectively,of the observed wavenumber spectral component WN4.

关键词： TIMED observations wavenumber spectral components non-migrating tides short period variation

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Magnetospheric Physics in China: 2012–2014

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空间科学学报 2014年第5期34卷 605-647页

作者： cao jinbin YANG Junying Space Science Institute School of Astronautics Beihang University

In the past two years, many progresses have been made in magnetospheric physics by using the data of Double Star Program, Cluster, THEMIS and RBSP missions, or by computer simulations. This paper briefly reviews these works based on papers selected from the 126 publications from March 2012 to March 2014. The subjects cover various sub-branches of magnetospheric physics,including geomagnetic storm, magnetospheric substorm and magnetic reconnection.

关键词： Magnetospheric physics Cluster Double Star THEMIS

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Differences between onset times of bursty bulk flows (BBFs) of two Cluster satellites in the magnetotail

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Science China(Technological Sciences) 2012年第5期55卷 1178-1183页

作者： cao jinbin WANG ZhiQiang MA YuDuan CAI CunLin Space Science Institute School of AstronauticsBeihang UniversityBeijing 100191China Key Laboratory for Space Weather/CSSAR Beijing 100190China Graduate University Chinese Academy of SciencesBeijing 100080China

This paper using the dataset of BBFs (bursty bulk flows) observed by two Cluster satellites C1 and C4 studies the difference between onset times of BBFs observed by C1 and C4. It is found that the onset time differences of most of BBFs observed by C1 and C4 are smaller than 60 s. The average onset time difference of BBFs of C1 and C4 is 68.5 s. The probabilities of onset time difference of BBFs of C1 and C4 larger than 30 60 90 and 120 s are respectively 55% 35% 27% and 23%. The largest onset time difference of BBFs of C1 and C4 decreases with the increase of earthward component of maximum velocities of BBFs. The onset time difference of BBFs of C1 and C4 results from the velocity inhomogeneity inside the flow channel of BBF which may be produced in propagation path and/or in source region of BBFs. Such a wide range of onset time difference of BBFs suggests that the velocity inhomogeneity inside the flow channel of BBF is various. These results are very important to the current study of substorm research based on THEMIS data because they indicate that it is impossible to determine the onset time of BBF with a single satellite.

关键词：起始时间卫星流动突发性发病时间群集最高速度不均匀性

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Progress of Double Star Program

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空间科学学报 2006年第Z1期26卷 7-13页

作者： LIU Zhenxing cao jinbin Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100080 China Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100080 China

The Double Star Programme (DSP) is the first joint space mission between China and ESA. The mission, which is made of two spacecraft, is designed to investigate the magnetospheric global processes and their response to the interplanetary disturbances in conjunction with the Cluster mission. The first spacecraft, TC-1 (Tan Ce means "Explorer"), was launched on 30 December 2003, and the second one, TC-2, on 25 July 2004 on board two Chinese Long March 2C. Due to the importance of and success of DSP, both CNSA and ESA approved the extension of DSP. This paper presents DSP mission and some important scientific results made based on the data of DSP.

关键词： Double Star Program, Magnetosphere

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Magnetospheric Physics in China During the Period of 2004 - 2006

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空间科学学报 2006年第Z1期26卷 97-111页

作者： cao jinbin LIU Zhenxing State Key Laboratory for Space Weather Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100080 China State Key Laboratory for Space Weather Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100080 China

Their brief report presents the advances of the magnetospheric physics researches in China during the period of 2004-2006. During the past two years, China-ESA cooperation DSP (Double Star Program) satellites were successively launched. In addition, China also participated in the scientific research of ESA's Cluster mission. The DSP and Cluster missions provide Chinese space physicists high quality data to study multiscale physical process in the magnetosphere. The work made based on the data of DSP is presented in the paper of "Progress of Double Star Program" of this issue.

关键词： Magnetosphere physics

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On the ion distributions at the separatrices during symmetric magnetic reconnection

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Earth and Planetary Physics 2021年第2期5卷 205-217页

作者： HongTao Huang YiQun Yu jinbin cao Lei Dai RongSheng Wang School of Space and Environment Beihang UniversityBeijing 100191China Key Laboratory of Space Environment Monitoring and Information Processing Ministry of Industry and Information TechnologyBeijing 100191China State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China Key Laboratory of Geospace Environment Department of Geophysics and Planetary ScienceUniversity of Science and Technology of ChinaHefei 230026China

A particle-in-cell simulation of symmetric reconnection with zero guide field is carried out to understand the dynamics of ions along the *** the investigation of ion velocity distributions at different moments and locations along the separatrices,a typical distribution is found:two counter-streaming populations in the perpendicular direction,with another two populations accelerated into distinct energy levels in the parallel *** tracing of ions reveals that the counter-streaming cores are mostly composed of ions initially located at the same side of the separatrix,while the other two accelerated populations in the parallel direction are composed of ions crossing through the neutral *** analysis of energy conversion of these populations,it is found that the ion energization along the separatrix is attributable primarily to the Hall electric field,while that in the region between the two separatrices is caused primarily by the induced reconnection electric *** the counter-streaming population,the low-energy ions that cross the separatrix twice are affected by both Hall and reconnection electric fields,while the high-energy ions that directly enter the separatrix from the unperturbed plasma are energized mainly by the Hall electric *** the two energized populations in the parallel direction,the ions with lower-energy are accelerated mainly by the in-plane electric field and the Hall electric field on the opposite side of the separatrix,whereas the ions with higher-energy not only experience the same energization process but also are constantly accelerated by the reconnection electric field.

关键词： magnetic reconnection particle-in-cell simulation energetic particles

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Multi-Scale Physical Process in the Magnetosphere

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空间科学学报 2008年第5期28卷 454-467页

作者： cao jinbin LIU Zhenxing State Key Laboratory for Space Weather Center for Space Sciences and Applied Research Chinese Academy of Sciences Beijing 100190

The brief report presents a part of the research results of the magnetospheric physics researches in China during the period of 2006—*** the past two years,China-ESA co-operation DSP(Double Star Program) satellites were basically operating normally in its extended *** DSP and Cluster missions provide Chinese space physicists high quality data to study multi-scale physical process in the *** work made based on the data of DSP is presented in the paper of "Progress of Double Star Program" of this issue.

关键词：双星探测计划多尺度物理过程磁气圈空间研究

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A Brief Introduction and Recent Progress of the Geospace Double Star Program

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空间科学学报 2004年第Z1期24卷 39-45页

作者： LIU Zhenxing cao jinbin Center for Space Science and Applied Research The Chinese Academy of Sciences Beijing 100080 China Center for Space Science and Applied Research The Chinese Academy of Sciences Beijing 100080 China

The Geospace Double Star Project (DSP) consists of two small satellites operating in the near-earth equatorial and polar regions, respectively. The goals of DSP are: (1) to provide high-resolution field, particle, and wave measurements in some important near-earth active regions which have not been covered by current ISTP missions, such as the near-earth plasma sheet and its boundary layer, the ring current, the radiation belts, the dayside magnetopause boundary layer, and the polar region; (2) to investigate the trigger mechanisms of magnetic storms, magnetospheric substorms, and magnetospheric particle events,as well as the responses of geospace storms to solar activities and interplanetary disturbances; (3) to set up the models describing the spatial and temporal variations of the near-earth space *** realize the above goals, the equatorial satellite TC-1 and the polar satellite TC-2 will accommodate, respectively, eight instruments on board. TC-1was launched successfully in December 2003 while the polar satellite (TC-2)will be launched in July 2004. The orbit of the equatorial satellite TC-1 consists of a perigee at 550 km, an apogee at 60 000 km, and an inclination of about 28.5; while the orbit of the polar satellite will have a perigee of 700 km, an apogee of 40 000 km, and an inclination of about 90. The two satellites will take coordinated measurements with Cluster Ⅱ and will first form a "six-point exploration" in *** operational status of TC-1 are introduced in this paper.

关键词： Solar-terrestrial space physics, Double star exploration project,International cooperation

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Magnetospheric Physics in China:2014-2015

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空间科学学报 2016年第5期36卷 672-737页

作者： cao jinbin YANG Junying School of Space and Environment Beihang University

In the past two years,much progress is made in magnetospheric physics by using the data of Double Star Program,Cluster,THEMIS,RBSP,Swarm missions etc.,or by computer *** paper briefly reviews these works based on papers selected from the 191 publications from January 2014 to December *** subjects cover various sub-branches of magnetospheric physics,including geomagnetic storm,magnetospheric substorm,magnetic reconnection,solar windmagnetosphere-ionosphere interaction,radiation belt,outer magnetosphere,magnetotail,plasmasphere,geomagnetic field,auroras and currents.

关键词：磁层物理物理学中国计算机模拟双星计划磁层亚暴相互作用等离子体

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Progress of Double Star Program 2006—2008

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空间科学学报 2008年第5期28卷 385-389页

作者： LIU Zhenxing cao jinbin State Key Laboratory for Space Weather Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100190

This paper presents the status of two satellites of Double Star Program,and a part of scientific results based on the data of Double Star Program obtained during the period of *** scientific results in the magnetosphe... 详细信息

关键词：地球空间双星探测计划中国研究进展空间技术

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