| 研究実績の概要 |
The achievements of this project include the following aspects. 1. The observed cooling effect of the stratosphere warming (SSW) on the upper thermosphere is confirmed by model simulation. 2. The local time and height dependence of the thermosphere response is revealed, which provides a global context to synthesize ground and satellite observations. 3. The contribution of the thermosphere response to the ionosphere response is investigated. 4. The physical mechanism for the thermosphere cooling effect due to SSW is found to be the dynamical change in the zonal mean circulation at low and middle latitudes, with additional contributions from solar radiation and thermal heat conduction.
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