Middle-Low Latitude Neutral Composition and Temperature Responses to the 20 and 21 November 2003 Superstorm From GUVI Dayside Limb Measurements

Tingting Yu; Wenbin Wang; Zhipeng RenJia YueXinan YueMaosheng He

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Middle-Low Latitude Neutral Composition and Temperature Responses to the 20 and 21 November 2003 Superstorm From GUVI Dayside Limb Measurements

机译：中性成分和中古低地的自由度温度对11月20和21的反应2003年的超级风暴GUVI的光面测量

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TIMED/Global Ultraviolet Imager (GUVI) limb measurements of far-ultraviolet airglow emission have been used to investigate middle-low latitude thermospheric composition and neutral temperature responses to the 20 and 21 November 2003 (day of year [DOY] 324 and 325) superstorm. Altitude profiles of O, N_2 number densities and temperature, as well as O/N_2 column density ratio (ΣO/ N_2), on the storm days along the GUVI limb tracks are compared with those on DOY 323 (quiet time). The storm-time composition and temperature responses were global and evolved continuously as the storm progressed. Specially, N2 and temperature increased almost globally at all altitudes during the storm and their perturbation structures were similar. The magnitudes of their enhancements both increased with altitude and latitude. The storm-induced O perturbations decreased in the lower thermosphere but increased in the upper thermosphere. Transition heights of O perturbations from decrease to increase changed with latitude and time. During the storm main and recovery phases, the storm-induced ΣO/ N_2 decreases were mostly related to the O depletion in the low-middle thermosphere, whereas ΣO/N_2 increases during the storm were primarily caused by N2 depletion. There was a remarkable hemispheric asymmetry in composition responses as they have different morphologies and lifetime, especially during the storm recovery phase.

机译：时间/全球紫外成像仪(GUVI)肢体远紫外大气光发射的测量被用来研究中古低地纬度thermospheric成分和中性温度应对2003年11月20日和21日(的一天(机灵)324年和325年)超级风暴。的O,甲烷、密度和数量温度,以及O /甲烷、列密度比率(ΣO /甲烷),沿着GUVI在暴风雨的日子里肢体追踪比较机灵与那些在323年(安静的时间)。温度响应全球和演化不断随着风暴的进展。N2和温度增加了几乎全球在风暴及其所有海拔扰动的结构是相同的。大小的增强都增加了海拔和纬度。降低热电离层扰动减少但在上层热大气层增加。过渡高度的O扰动减少与纬度和增加改变了时间。的storm-inducedΣO /甲烷主要是降低low-middle O相关损耗热大气层,而ΣO /甲烷在增加风暴主要是由N2损耗引起的。有一个显著的半球不对称成分有不同的反应形态和生命周期,特别是在风暴复苏阶段。

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来源
《Journal of Geophysical Research, A. Space Physics: JGR》 |2021年第8期|e2020JA028427-1-e2020JA028427-13|共13页
作者
Tingting Yu; Wenbin Wang; Zhipeng RenJia YueXinan YueMaosheng He;
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作者单位

Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China;

High Altitude Observatory, National Center for Atmospheric Research, Boulder, CO, USA;

Catholic University of America, Washington, DC, USALeibniz-Institute of Atmospheric Physics at the Rostock University, Kühlungsborn, Germany;

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正文语种英语
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temperature response; thermosphere; Temperatureperturbation;

机译：温度反应;热电离层;Temperatureperturbation;

Middle-Low Latitude Neutral Composition and Temperature Responses to the 20 and 21 November 2003 Superstorm From GUVI Dayside Limb Measurements

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