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Is Solar Wind electron precipitation a source of neutral heating in the nightside Martian upper atmosphere?

Earth and Planetary Physics 2021年第1期5卷 1-10页

作者： LongKang Dai Jun Cui DanDan Niu Hao Gu YuTian Cao XiaoShu Wu HaiRong Lai Planetary Environmental and Astrobiological Research Laboratory(PEARL) School of Atmospheric SciencesSun Yat-sen UniversityZhuhai Guangdong 519082China Key Laboratory of Lunar and Deep Space Exploration National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China Center for Excellence in Comparative Planetology Chinese Academy of SciencesHefei 230031China Institute of Space Science and Applied Technology Harbin Institute of TechnologyShenzhen Guangdong 518055China

Solar Wind(SW)electron precipitation is able to deposit a substantial amount of energy in the nightside Martian upper atmosphere,potentially exerting an influence on its thermal *** study serves as the first investigation of such an issue,with the aid of the simultaneous measurements of both neutral density and energetic electron intensity made on board the recent Mars atmosphere and Volatile Evolution(MAVEN)*** report that,from a statistical point of view,the existing measurements do not support a scenario of noticeable neutral heating via SW electron ***,during 3%−4%of the MAVEN orbits for which data are available,strong correlation between nightside temperature and electron intensity is observed,manifested as collocated enhancements in both parameters,as compared to the surrounding *** addition,our analysis also indicates that neutral heating via SW electron precipitation tends to be more effective at altitudes below 160 km for integrated electron intensities above 0.01 ergs·cm^−2·s^−1 over the energy range of 3−450 *** results reported here highlight the necessity of incorporating SW electron precipitation as a heat source in the nightside Martian upper atmosphere under extreme circumstances such as during interplanetary coronal mass ejections.

关键词： Mars Solar Wind upper atmosphere MAVEN

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Advances in Researches on the Middle and upper atmosphere in 2010—2012

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空间科学学报 2012年第5期32卷 681-692页

作者： CHEN Zeyu CHEN Hongbin LIU Xiao HU Xiong BIAN Jianchu CHEN Wen ZHANG Shaodong XUE Xianghui Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029 State Key Laboratory of Space Weather Center for Space Science and Applied ResearchChinese Academy of SciencesBeijing 100190 School of Electronic Information Wuhan UniversityWuhan 430072 School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026

This article summarizes the researches on the middle and upper atmosphere by Chinese scientists in *** focuses are placed on the advances in construction of ground-based remote sensing facilities,the mean state and long-term changes in the middle atmosphere circulation, the prevailing dynamical processes,and the coupling of the middle atmospheric layers.

关键词： upper atmosphere Middle atmosphere Stratosphere Troposphere Coupling

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Recent investigation on the coupling between the ionosphere and upper atmosphere

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Science China Earth Sciences 2014年第9期57卷 1995-2012页

作者： WAN WeiXing XU JiYao Key Laboratory of Earth and Planetary Physics Institute of Geology and Geophysics Chinese Academy of Sciences State Key Laboratory of Space Weather Center for Space Science and Applied Research Chinese Academy of Sciences

Scientific attention has recently been focused on the coupling of the earth's upper atmosphere and ionosphere. In the present work, we review the advances in this field, emphasizing the studies and contributions of Chinese scholars. This work first introduces new developments in the observation instruments of the upper atmosphere. Two kinds of instruments are involved: optical instruments(lidars, FP interferometers and all-sky airglow imagers) and radio instruments(MST radars and all-sky meteor radars). Based on the data from these instruments and satellites, the researches on climatology and wave disturbances in the upper atmosphere are then introduced. The studies on both the sporadic sodium layer and sporadic E-layer are presented as the main works concerning the coupling of the upper atmosphere and the low ionosphere. We then review the investigations on the ionospheric longitudinal structure and the causative atmospheric non-migrating tide as the main progress of the coupling between the atmosphere and the ionospheric F2-region. Regarding the ionosphere-thermosphere coupling, we introduce studies on the equatorial thermospheric anomaly, as well as the influence of the thermospheric winds and gravity waves to the ionospheric F2-region. Chinese scholars have made much advancement on the coupling of the ionosphere and upper atmosphere, including the observation instruments, data precession, and modeling, as well as the mechanism analysis.

关键词： upper atmosphere ionosphere vertical coupling

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Recent investigation on the coupling between the ionosphere and upper atmosphere

Recent investigation on the coupling between the ionosphere ...

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中国科学院地质与地球物理研究所2014年度（第14届）学术年会

作者： WAN WeiXing XU JiYao Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of Sciences State Key Laboratory of Space Weather Center for Space Science and Applied ResearchChinese Academy of Sciences

Scientific attention has recently been focused on the coupling of the earth’s upper atmosphere and *** the present work,we review the advances in this field,emphasizing the studies and contributions of Chinese *** work first introduces new developments in the observation instruments of the upper *** kinds of instruments are involved:optical instruments(lidars,FP interferometers and all-sky airglow imagers) and radio instruments(MST radars and all-sky meteor radars).Rased on the data from these instruments and satellites,the researches on climatology and wave disturbances in the upper atmosphere are then *** studies on both the sporadic sodium layer and sporadic E-layer are presented as the main works concerning the coupling of the upper atmosphere and the low *** then review the investigations on the ionospheric longitudinal structure and the causative atmospheric non-migrating tide as the main progress of the coupling between the atmosphere and the ionospheric *** the ionosphere-thermosphere coupling,we introduce studies on the equatorial thermospheric anomaly,as well as the influence of the thermospheric winds and gravity waves to the ionospheric *** scholars have made much advancement on the coupling of the ionosphere and upper atmosphere,including the observation instruments,data precession,and modeling,as well as the mechanism analysis.

关键词： upper atmosphere ionosphere vertical coupling

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Response of atmospheric carbon dioxide to the secular variation of weakening geomagnetic field in whole atmosphere simulations

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Earth and Planetary Physics 2021年第4期5卷 327-336页

作者： Xu Zhou XinAn Yue Han-Li Liu Yong Wei YongXin Pan Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing 100029China Beijing National Observatory of Space Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China High Altitude Observatory National Center for Atmospheric ResearchBoulderCOUSA

Responses of atmospheric carbon dioxide(CO_(2))density to geomagnetic secular variation are investigated using the Whole atmosphere Community Climate Model-eXtended(WACCM-X).Our ensemble simulations show that CO_(2) volume mixing ratios(VMRs)increase at high latitudes and decrease at mid and low latitudes by several ppmv in response to a 50%weakening of the geomagnetic *** significant changes in CO_(2) are mainly found above~90 km altitude and primarily redetermine the energy budget at~100-110 *** analysis of transformed Eulerian mean(TEM)circulation found that CO_(2) change is caused by enhanced upwelling at high latitudes and downwelling at mid and low latitudes as a result of increased Joule *** further analyzed the atmospheric CO_(2) response to realistic geomagnetic weakening between 1978 and 2013,and found increasing(decreasing)CO_(2) VMRs at high latitudes(mid and low latitudes)*** the first time,our simulation results demonstrate that the impact of geomagnetic variation on atmospheric CO_(2) distribution is noticeable on a time scale of decades.

关键词： atmospheric carbon dioxide geomagnetic fields whole atmosphere simulation upper atmosphere

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Recent Advances in Research of the Chinese Meridian Project

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空间科学学报 2020年第5期40卷 679-690页

作者： WANG Chi CHEN Zhiqing XU Jiyao State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190

The Chinese Meridian Project is a ground-based space environment monitoring facility in *** first phase of the project has been put into formal operation since 2012 after 4-year’s *** consists of 15 observatories located roughly along 120°E longitude and 30°N latitude,with each observatory equipped with multiple instruments to monitor space *** on the huge observational data accumulated,significant scientific achievements have been made with more than 300 peer-reviewed journal papers *** this report,scientific results from the past two years have been reviewed with topics covering fields of geomagnetic,atmosphere,ionosphere,and their responses to solar *** excellent achievements from the Phase I of Chinese Meridian Project lay a good foundation for Phase II,which has already been approved with the official kick-off of construction in November *** will conceive an unprecedented contribution to global space weather community from China.

关键词： Chinese Meridian Project Space weather Ionosphere upper atmosphere

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Analysis software for upper atmospheric data developed by the IUGONET project and its application to polar science

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Advances in Polar Science 2013年第4期24卷 231-240页

作者： Yoshimasa Tanaka Atsuki Shinbori Tomoaki Hori Yukinobu Koyama Shuji Abe No-rio Umemura Yuka Sato Manabu Yagi Satoru UeNo Akiyo Yatagai Yasunobu Ogawa Yoshizumi Miyoshi National Institute of Polar Research 10-3 Midori-choTachikawaTokyo 190-8518Japan Research Institute for Sustainable Humanosphere GokashoUjiKyoto 611-0011Japan Solar-Terrestrial Environment Laboratory Nagoya UniversityFurou-choChikusaNagoyaAichi 464-8614Japan Data Analysis Center for Geomagnetism and Space Magnetism Graduate School of ScienceKyoto UniversityKi-tashirakawa-Oiwake ChoSakyo-kuKyoto 606-8502Japan International Center for Space Weather Science and Education Kyushu University6-10-1 HakozakiHigashi-kuFukuoka 812-8581Japan Planetary Plasma and Atmospheric Research Center Tohoku UniversityAramaki-aza-aobaAobaSendai 980-8578Japan Kwasan and Hida Observatories Graduate School of ScienceKyoto UniversityKurabashiraKamitakara-choTakayamaGifu 506-1314Japan

To comprehensively understand the Arctic and Antarctic upper atmosphere, it is often crucial to analyze various data that are obtained from many regions. Infrastructure that promotes such interdisciplinary studies on the upper atmosphere has been developed by a Japanese inter-university project called the Inter-university upper atmosphere Global Observation Network （1UGONET）. The objective of this paper is to describe the infrastructure and tools developed by IUGONET. We focus on the data analysis software. It is written in Interactive Data Language （IDL） and is a plug-in for the THEMIS Data Analysis Software suite （TDAS）, which is a set of IDL libraries used to visualize and analyze satellite- and ground-based data. We present plots of upper atmospheric data provided by IUGONET as examples of applications, and verify the usefulness of the software in the study of polar science. We discuss IUGONET＇s new and unique developments, i.e., an executable file of TDAS that can run on the IDL Virtual Machine, IDL routines to retrieve metadata from the IUGONET database, and an archive of 3-D simulation data that uses the Common Data Format so that it can easily be used with TDAS.

关键词： data analysis software metadata database upper atmosphere ground-based observation polar science,interdisciplinary study IUGONET

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