DOI: 10.1002/2017JA024746
Scopus记录号: 2-s2.0-85043401808
论文题名: Faster Traveling Atmosphere Disturbances Caused by Polar Ionosphere Turbulence Heating
作者: Liu J. ; Wang W. ; Burns A. ; Oppenheim M. ; Dimant Y.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 3 起始页码: 2181
结束页码: 2191
语种: 英语
英文关键词: anomalous electron heating
; Farley-Buneman instability
; traveling atmosphere disturbances
英文摘要: A new module, which includes both the turbulence electron heating and the electron-neutral cooling rate correction associated with the Farley-Buneman onstability (FBI) in the National Center for Atmospheric Research-Thermosphere Ionosphere Electrodynamics Global Circulation Model, enables us, for the first time, to investigate the intimate coupling between polar turbulence electron heating and thermosphere disturbances in the context of a first-principle, self-consistent model. Our simulation results show that during geomagnetic storms, after taking the FBI effects into account, Joule heating is almost doubled in the E region at these locations of strong convection electric field. This increases (~6%) the phase speed of traveling atmosphere disturbances at around 400 km that are launched from both hemispheres. Additional heating sources also directly produce a divergence in the zonal wind with magnitudes of 20 m/s in the lower thermosphere. However, the FBI impact on the thermosphere at F region altitudes is not so straightforward. E region anomalous electron heating in association with the FBI can change the phase speeds and magnitudes of traveling atmosphere disturbances from high latitudes in both hemispheres and consequently modify global neutral wind circulation at F region altitudes. This, in turn, can affect the neutral temperature through adiabatic compressional heating and expansive cooling by about 40 K. This study demonstrates how the ionosphere-thermosphere physical processes across different temporal and spatial scales are tightly coupled together throughout the whole upper atmosphere domain. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114404
Appears in Collections: 气候减缓与适应
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作者单位: High Altitude Observatory, National Center for Atmospheric Research, Boulder, CO, United States; Center for Space Physics, Boston University, Boston, MA, United States
Recommended Citation:
Liu J.,Wang W.,Burns A.,et al. Faster Traveling Atmosphere Disturbances Caused by Polar Ionosphere Turbulence Heating[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(3)