From Troposphere to Upper Atmosphere: Thermosphere cooling in response to Stratosphere Sudden Warming
| Project/Area Number |
25800274
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Space and upper atmospheric physics
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| Research Institution | Kyushu University |
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Principal Investigator |
LIU Huixin 九州大学, 学内共同利用施設等, 准教授 (70589639)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | thermosphere dynamics / vertical coupling / ionosphere / atmospheric coupling / Stratosphere warming / thermosphere response / semi-diurnal tides / cooling |
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| Outline of Final Research Achievements |
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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Report
(3 results)
Research Products
(18 results)
