Studies on the pysical and optical properties, and the 3-D radiatvei effect of the broken clouds
| Project/Area Number |
17H02963
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | Japan, Meteorological Research Institute |
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Principal Investigator |
KUDO Rei 気象庁気象研究所, 気象観測研究部, 主任研究官 (00414508)
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| Co-Investigator(Kenkyū-buntansha) |
鷹野 敏明 千葉大学, 大学院工学研究院, 教授 (40183058)
岩渕 弘信 東北大学, 理学研究科, 准教授 (80358754)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2018: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2017: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
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| Keywords | 雲 / 大気放射 / リモートセンシング / 雲物理 / 気象学 |
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| Outline of Final Research Achievements |
In this study, we developed a new ground-based remote sensing system for clouds to study the three dimensional radiative effect of heterogeneous clouds on the surface solar radiation. The remote sensing system is consists of a new whole sky camera and new retrieval techniques to retrieve the cloud optical depth distribution based on the three dimensional radiative transfer model. The intercomparison of the cloud optical depth during the intensive observation experiment showed that the cloud optical depth retrieved by our remote sensing system was consistent with those of the other ground- and satellite-based remote sensing methods.
The three dimensional radiative effect was investigated by using the observation and simulation data. Newly, we showed that the illumination and shadowing effects of the cloud on the sun side and opposite side affect the spectral dependency of radiances, and the radiances become more colorful.
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| Academic Significance and Societal Importance of the Research Achievements |
一次元放射伝達理論に基づく既存の雲のリモートセンシング手法では、三次元放射効果は全く考慮されない。このため、これまで離散的に分布した雲を観測対象とすることが出来なかった。本研究で開発した地上リモートセンシング手法は、この問題を解決する世界的にも類を見ない最先端の手法である。
既存の気象・気候モデルには、雲の三次元放射効果が含まれていない。これが、放射収支と気候変動、太陽光発電の評価・予測における誤差要因となっていた。本研究によって新しく得られるようになった雲分布と三次元放射効果の観測結果を蓄積し、三次元放射効果をパラメタライズすることで、気候変動や太陽光発電の評価・予測の向上につながる。
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Report
(4 results)
Research Products
(74 results)
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[Journal Article] ULF Modulation of Energetic Electron Precipitation Observed by VLF/LF Radio Propagation2020
Author(s)
Miyashita, T., H. Ohya, F. Tsuchiya, A. Hirai, M. Ozaki, K. Shiokawa, Y. Miyoshi, N. Nishitani, M. Teramoto, Martin Connors, S. G. Shepherd, Y. Kasahara, A. Kumamoto, M. Shoji, I. Shinohara, H. Nakata, and T. Takano
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Journal Title
Radio Science Bulletin
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Peer Reviewed
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[Presentation] Oscillations of Atmospheric Electric Field during around Tokyo, Japan, with the 95-GHzCloud Radar FALCON-I2019
Author(s)
Ohya, H., K. Nakamori, M. Kamogawa, T. Suzuki, T. Takano, K. Morotomi, H. Nakata, and K. Shiokawa
Organizer
27th International Union of Geodesy and Geophysics (IUGG) General Assembly 2019
Related Report
Int'l Joint Research
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[Presentation] Long-term dataset of geostationary meteorological satellites can contribute climate change studies: Archiving status in CEReS2019
Author(s)
Higuchi, A., K. Toyoshima, H. Takenaka, H. Hirose, K. Ichii, K.T. Murata, T. Y. Nakajima, T. Nakajima, H. Hashimoto, R. R Nemani, K. Muranaga, T. Takano, F. Kobayashi, Y. Yamamoto, P. Pavarangkoon, K. Yamamoto, K. Morotomi, S. Shimamura and T. Kawanabe
Organizer
2019 AGU Fall Meeting
Related Report
Int'l Joint Research
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[Presentation] Generation of Rain Drops at Cloud Bottom Observed with W-band Cloud Radar FALCON-I2019
Author(s)
HIKAWA Keisuke, IURA Taichi, MORITA Hyuga, FUEDA Ryo, KAWAMURA Yohei, TAKANO Toshiaki, HIGUCHI Atsushi, TAKAMURA Tamio, KOBAYASHI Fumiaki, MOROTOMI Kazuomi, SHIMAMURA Shigeharu, IWASHITA Hisato
Organizer
AMS 39th International Conference on Radar Meteorology
Related Report
Int'l Joint Research
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[Presentation] SKYNETデータによるエアロゾル組成のリモートセンシング2017
Author(s)
工藤玲, 入江仁士, 居島修, 高野松美, 竹村俊彦, 西澤智明, 青木一真, 日暮明子, 清水厚, 及川栄治, 山崎明宏, 石田春磨, 早坂忠裕
Organizer
日本気象学会2017年度秋季大会
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