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Validation of ICON-MIGHTI Thermospheric Wind Observations: 2. Green-Line Comparisons to Specular Meteor Radars

文献类型：期刊论文

作者Harding, Brian J.3; Chau, Jorge L.7; He, Maosheng7; Englert, Christoph R.8; Harlander, John M.9; Marr, Kenneth D.8; Makela, Jonathan J.10; Clahsen, Matthias7; Li, Guozhu1,2; Ratnam, M. Venkat4
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
出版日期2021-03-01
卷号126期号:3页码:12
关键词ICON ground‐ space comparison MIGHTI neutral wind thermosphere
ISSN号2169-9380
DOI10.1029/2020JA028947
英文摘要We compare coincident thermospheric neutral wind observations made by the Michelson Interferometer for Global High-Resolution Thermospheric Imaging (MIGHTI) on the Ionospheric Connection Explorer (ICON) spacecraft, and four ground-based specular meteor radars (SMRs). Using the green-line MIGHTI channel, we analyze 1158 coincidences between Dec 2019 and May 2020 in the altitude range from 94 to 104 km where the observations overlap. We find that the two datasets are strongly correlated (r = 0.82) with a small mean difference (4.5 m/s). Although this agreement is good, an analysis of known error sources (e.g., shot noise, calibration errors, and analysis assumptions) can only account for about a quarter of the disagreement variance. The unexplained variance is 27.8% of the total signal variance and could be caused by unknown errors. However, based on an analysis of the spatial and temporal averaging of the two measurement modalities, we suggest that some of the disagreement is likely caused by temporal variability of the wind on scales less than or similar to 70 min. The observed magnitudes agree well during the night, but during the day, MIGHTI observes 16%-25% faster winds than the SMRs. This remains unresolved but is similar in certain ways to previous SMR-satellite comparisons.
资助项目NASA's Explorers Program[NNG12FA45 C] ; NASA's Explorers Program[NNG12FA42I] ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)[SPP 1788] ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)[CH 1482/1-2]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000636288800057
出版者AMER GEOPHYSICAL UNION
资助机构NASA's Explorers Program ; NASA's Explorers Program ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; NASA's Explorers Program ; NASA's Explorers Program ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; NASA's Explorers Program ; NASA's Explorers Program ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; NASA's Explorers Program ; NASA's Explorers Program ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)
源URL[http://ir.iggcas.ac.cn/handle/132A11/101125]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Harding, Brian J.
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
3.Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA
4.Natl Atmospher Res Lab, Tirupati, Andhra Pradesh, India
5.Sri Venkateswara Univ, Dept Phys, Tirupati, Andhra Pradesh, India
6.Virginia Polytech Inst & State Univ, Dept Aerosp & Ocean Engn, Blacksburg, VA 24061 USA
7.Univ Rostock, Leibniz Inst Atmospher Phys, Kuhlungsborn, Germany
8.US Naval Res Lab, Space Sci Div, Washington, DC USA
9.Space Syst Res Corp, Alexandria, VA USA
10.Univ Illinois, Dept Elect & Comp Engn, Urbana, IL USA
推荐引用方式
GB/T 7714		 Harding, Brian J.,Chau, Jorge L.,He, Maosheng,et al. Validation of ICON-MIGHTI Thermospheric Wind Observations: 2. Green-Line Comparisons to Specular Meteor Radars[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2021,126(3):12.
APA Harding, Brian J..,Chau, Jorge L..,He, Maosheng.,Englert, Christoph R..,Harlander, John M..,...&Immel, Thomas J..(2021).Validation of ICON-MIGHTI Thermospheric Wind Observations: 2. Green-Line Comparisons to Specular Meteor Radars.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,126(3),12.
MLA Harding, Brian J.,et al."Validation of ICON-MIGHTI Thermospheric Wind Observations: 2. Green-Line Comparisons to Specular Meteor Radars".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 126.3(2021):12.

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来源：地质与地球物理研究所

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