High- and Middle-Latitude Neutral Mesospheric Density Response to Geomagnetic Storms
High- and Middle-Latitude Neutral Mesospheric Density Response to Geomagnetic Storms
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高、中纬度中性中层密度对地磁暴的响应
DOI：
10.1002/2017gl076282
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发表时间：
2018
影响因子：
5.2
通讯作者：
Dou Xiankang
中科院分区：
文献类型：
--
作者：
Yi Wen;Reid Iain M.;Xue Xianghui;Murphy Damian J.;Hall Chris M.;Tsutsumi Masaki;Ning Baiqi;Li Guozhu;Younger Joel P.;Chen Tingdi;Dou Xiankang
我们报告了对地磁风暴的高纬度和中纬度中性中间层密度响应的首次观测。半球间中层密度是使用位于极光区下方的戴维斯站（68.6°S，77.9°E）、斯瓦尔巴群岛（78.3°N，16°E）和特罗姆瑟（69.6°N，19.2°E）的流星雷达数据估算的；位于北部中纬度地区的漠河（北纬 53.5°，东经 122.3°）和北京（北纬 40.3°，东经 116.2°）流星雷达，以及 Aura 卫星上的微波临边探测仪（MLS）。案例研究和叠加历元分析表明，地磁风暴可以显着影响中层密度，导致极光区减少约 10% 以上，在高中纬度地区减少约 5%。由于变化如此之大，有理由怀疑地磁暴影响高纬度和中纬度中间层的动态。
We report the first observations of a high‐ and middle‐latitude neutral mesospheric density response to geomagnetic storms. Interhemisphere mesospheric densities are estimated using data from meteor radars at Davis Station (68.6°S, 77.9°E), Svalbard (78.3°N, 16°E) and Tromsø (69.6°N, 19.2°E), which are located under the auroral zone; the Mohe (53.5°N, 122.3°E), and Beijing (40.3°N, 116.2°E) meteor radars, located in northern midlatitudes, and the Microwave Limb Sounder (MLS) on the Aura satellite. Both case studies and a superposed epoch analysis indicate that geomagnetic storms can significantly influence mesospheric density, causing a greater than ~10% decrease in the auroral zones and a ~5% decrease at higher midlatitudes. With such large changes, it is reasonable to suspect that geomagnetic storms influence the dynamics of the high and middle latitudes mesosphere.