Simulation and climate variation of polar mesospheric clouds using a climate model
| Project/Area Number |
24540469
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
AKIYOSHI Hideharu 独立行政法人国立環境研究所, 地球環境研究センター, 室長 (80211697)
TAKIGAWA Masayuki 独立行政法人海洋研究開発機構, 地球環境変動領域, 主任研究員 (30360754)
WATANABE Shingo 独立行政法人海洋研究開発機構, シームレス環境予測研究分野, 分野長 (50371745)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 夜光雲 / 夏季中間圏 / 太陽11年変動 / 気候モデル / 化学モデル / 重力波 / 大気潮汐 / 5日波 / 夏季中間圏界面 / 夜行雲 / 水蒸気 / 潮汐 / 化学スキーム / 放射スキーム / スペクトル解析 |
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| Outline of Final Research Achievements |
The time variation of polar mesospheric cloud (noctilucent cloud) in the summer season is investigated using a climate model including the lower thermosphere. The variation of cloud occurring is controlled by 5-day oscillation, tides and eastward propagating gravity waves. The vertical extent of the cloud in the model is 10km scale that is not realistic. In order to have the realistic extent of cloud, a chemical climate model is developed for the occurrence of the cloud whose vertical extent is about 4km.
The atmospheric response to 11-year solar cycle has been simulated. The response difference of temperature and water vapor between solar maximum and solar minimum is almost consistent to previous model results, however the response difference of cloud is small.
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Report
(4 results)
Research Products
(18 results)
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[Journal Article] Comparison of vertical wavelengths of gravity waves emitted by convection in the UTLS region at Koto Tabang (0.20S, 100.32E) and Gadanki (13.5N, 79.2E) using radars2014
Author(s)
Dhaka, S.K., V. Malik, Y. Shibagaki, H. Hashiguchi, S. Fukao, T. Shimomai, H-Y. Chun, and M. Takahashi
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Journal Title
Indian J. Radio and Space Phys
Volume: 43
Pages: 24-40
Related Report
Peer Reviewed / Open Access
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