- 1State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, China (gyjiang@swl.ac.cn)
- 2Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, China
- 3School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, China
- 4Deep Space Exploration Laboratory/School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China
- 5College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
- 6Key Laboratory of Science and Technology on Environmental Space Situation Awareness, Chinese Academy of Sciences, Beijing, China
- 7Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
- 8Key Laboratory of Enviromental Space Situation Awareness Technology, National Space Science Center, Chinese Academy of Sciences, Beijing, China
- 9Beijing Key Laboratory of Space Enviroment Exploration, Beijing, China
- 10Computational Physics Inc., Lowell, MA, USA
This study reports how the nighttime thermosphere responded to the May 2024 storm at Middle- Low-latitude in Asian and American sectors. The thermospheric wind and temperature data are collected from seven optical instruments of Chinese Meridian Project which include 3 Fabry-Perot Interferometers (FPIs) and 4 Dual-Channel Optical Interferometers (DCOIs), two FPIs at American sector, TIEGCM3.0 simulation and MSIS00 results. During the first period of intense storm on May 10, thermospheric winds turned to more southward and eastward at the geomagnetic latitudes 35N-49N of Asian sector. Remarkable surges occurred in NS wind after Bz continually kept southward for 2 hours, and the maximum speed reached about -395 m/s; meanwhile EW wind reached about 212 m/s. On May 11, the largest speed was -285 m/s in NS wind at Millstone Hill. Observations and TIEGCM3.0 both show large scale TADs at Asian and American sectors. The temperature changes are basically similar between observations and TIEGCM3.0 outputs, but MSIS00 doesn’t capture the temperature disturbances.
How to cite: Jiang, G., Zhu, Y., Lei, J., Xu, J., Liu, W., Wang, T., Liu, S., Yu, T., Jiang, F., Fu, L., Wei, X., and Kerr, R. B.: Nighttime thermosphere responses to the May 2024 storm at Middle- and Low-latitudes: optical observations and model results, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-11203, https://doi.org/10.5194/egusphere-egu25-11203, 2025.