Japan Geoscience Union Meeting 2019

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[E] Oral

P (Space and Planetary Sciences ) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM09] Vertical coupling in the atmosphere and Ionosphere

Thu. May 30, 2019 10:45 AM - 12:15 PM A03 (TOKYO BAY MAKUHARI HALL)

convener:Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University), Loren Chang(Institute of Space Science, National Central University), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Chairperson:Jann-Yenq Liu(National Central University, Taiwan), Loren Chang(National Central University, Taiwan)

11:00 AM - 11:15 AM

[PEM09-17] Long Term Mesopause Temperature Variations resolved by SD-WACCM, MSISE-00,TIMED SABER and Local Observations in Irkutsk (52.29o, 104.29o), Russia

*Yi Chung Chiu1, Loren Chang1, Yi Duann1, ALEXEI DMITRIEV1, Irina Medvedeva2, Konstantin Ratovsky2, Jia Yue3 (1.Institute of Space Science, National Central University, 2.Russian Academy of Sciences, Russian Federation, 3.Hampton University, USA)

Keywords:Mesopause, Temperature variability

Measurements of mesopause temperature are quite challenging and must rely on remote sensing methods. As part of the Taiwan-Russia joint research cooperation program, we carry out an analysis comparing mesopause temperature measurements made by the Irkutsk spectrophotometer between 2008 - 2018 and those resolved by the SD-WACCM data assimilation model, the empirical MSISE-00 model, and TIMED SABER satellite measurements. Spectral decomposition is performed on the datasets to determine the differences between the different observed and modelled seasonal and inter-annual variability, as well as to resolve long term trends.