Impacts of CME‐induced geomagnetic storms on the midlatitude mesosphere and lower thermosphere observed by a sodium lidar and TIMED/GUVI
作者： T. Yuan , Y. Zhang , X. Cai , C.‐Y. She , L. J. Paxton
DOI: 10.1002/2015GL064860
关键词:
摘要: In this paper, we report our findings on the correlation between neutral temperature (around mesopause) and thermospheric column density O/N2 ratio, along with their response to geomagnetic storms above midlatitude of North America. A temperature/wind Doppler Na lidar, operating at Fort Collins, CO (41°N, 105°W), later Logan, UT (42°N 112°W), observed significant increases (temperature anomaly) 95 km (as much as 55 K 105 km altitude) during four coronal mass ejection-induced (April 2002, November 2004, May 2005, October 2012). Coincident Thermosphere Ionosphere Mesosphere Energetics Dynamics/Global Ultraviolet Spectrographic Imager observations indicate depletion in ratio lidar locations. These suggest that local mesopause warming seen by is due transport high-latitude joule particle heated neutrals E F layers region.
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