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What Do the New 2018 HIWIND Thermospheric Wind Observations Tell Us About High-Latitude Ion-Neutral Coupling During Daytime?

Cited 2 time in wos
Cited 2 time in scopus
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Title
What Do the New 2018 HIWIND Thermospheric Wind Observations Tell Us About High-Latitude Ion-Neutral Coupling During Daytime?
Other Titles
2018년 HIWIND 주간 열권 바람 관측은 극지 이온-중성입자 상호작용에 어떤 의미가 있는가?
Authors
Wu, Qian
Knipp, Delores
Liu, Ting
Wang, Wenbin
Haggstrom, Ingemar
Jee, Geonhwa
Kwak, Young-Sil
Erickson, Philip J.
Subject
Astronomy & Astrophysics
Keywords
thermospheric wind; Fabry Perot interferometer; balloon-borne instrument; polar cap ionosphere; HIWIND; TIEGCM
Issue Date
2019-07
Citation
Wu, Qian, et al. 2019. "What Do the New 2018 HIWIND Thermospheric Wind Observations Tell Us About High­Latitude Ion­Neutral Coupling During Daytime?". JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 124(7): 6173-6181.
Abstract
Daytime thermospheric winds observed by the balloon-borne instrument HIWIND (High-altitude Interferometer WIND experiment) during two flights in June 2011 and 2018 from Kiruna (68 degrees N, 20 degrees E), along with simultaneous European Incoherent SCATter radar ion drift data, are analyzed. National Center for Atmospheric Research TIEGCM (Thermosphere Ionosphere Electrodynamics General Circulation Model) simulations for both flights are compared with observations. The observed thermospheric winds from the two flights have many similarities. HIWIND-observed thermospheric winds tend to be equatorward during the morning hours before noon and close to zero in the afternoon. In contrast, TIEGCM predicts poleward winds before noon and near zero in the afternoon. Southward interplanetary magnetic field B-z, occurring as the balloon passed through morning, was associated with greater equatorward meridional winds. The TIEGCM-simulated zonal winds have large differences with observations under more active conditions. The second HIWIND flight confirms some important results from the first flight and further shows thermospheric wind variations under different interplanetary magnetic field conditions. HIWIND observations in general provide invaluable data for model validation and highlight deficiencies in current high-latitude simulations.
URI
https://repository.kopri.re.kr/handle/201206/10923
DOI
http://dx.doi.org/10.1029/2019JA026776
Appears in Collections  
2019-2019, Understanding polar upper atmospheric changes by energy inputs from the space environment and the lower atmosphere (19-19) / Jee, Geonhwa (PE19020)
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