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, N₂ number densities and temperature, as well as O/N₂ column density ratio (∑O/N₂), 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 ∑O/N₂ decreases were mostly related to the O depletion in the low-middle thermosphere, whereas ∑O/N₂ 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.

中文翻译：

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GUVI 日侧肢体测量对 2003 年 11 月 20 日和 21 日超级风暴的中低纬度中性成分和温度响应

远紫外线气辉发射的定时/全球紫外线成像仪 (GUVI) 边缘测量已被用于研究中低纬度热层成分和对 2003 年 11 月 20 日和 21 日（一年中的 [DOY] 324 和 325）超级风暴的中性温度响应. 将沿着GUVI边缘路径的风暴日的O、N ₂数密度和温度以及O/N ₂柱密度比（∑O/N ₂）的海拔剖面与DOY 323（安静时间）上的高度剖面进行比较. 风暴时间组成和温度响应是全球性的，并且随着风暴的进展不断演变。特别地，N ₂在风暴期间，几乎所有高度的温度都在全球范围内升高，并且它们的扰动结构相似。它们的增强幅度随着海拔和纬度的增加而增加。风暴引起的 O 扰动在较低的热层中减少，但在较高的热层中增加。O 扰动从减少到增加的过渡高度随纬度和时间而变化。在风暴主要阶段和恢复阶段，风暴引起的∑O/N ₂减少主要与中低热层O消耗有关，而风暴期间∑O/N ₂增加主要由N ₂引起消耗。成分响应存在显着的半球不对称性，因为它们具有不同的形态和寿命，尤其是在风暴恢复阶段。