| Project/Area Number |
25800276
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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 | Meiji University (2014)
Rikkyo University (2013) |
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Principal Investigator |
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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 |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 極中間圏雲 / 中間圏 / ライダー / 南極 / 昭和基地 / 超高層大気 / 狭帯域化 |
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| Outline of Final Research Achievements |
Polar mesospheric cloud (PMC) is known as the most highest cloud in the Earth's atmosphere. Recently, PMC is considered as a possible tracer of global changes seen in the Earth's atmospheric system. This study has attempted to observe PMC using the ground-based lidar system in Syowa Station, Antarctica to understand a relationship between its variations and upper atmospheric parameters. A narrow band-pass Fabry-Perot etalon unit has been developed and installed in the receiver system of the lidar to improve a quality of the PMC observation during daytime. By using this new system, clear PMC signals were successfully detected under daylight condition during the period of austral summer between Dec. 2013 and Feb. 2014 in Syowa Station. Further analysis using these data has suggested a reasonable mechanism of the local variations seen on PMC occurrence with a period of several days.
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