Japan Meteorological Agency
Japan Meteorological Agency
出版者
宇宙航空研究開発機構
出版者（英）
Japan Aerospace Exploration Agency (JAXA)
雑誌名
宇宙航空研究開発機構特別資料: 航空宇宙数値シミュレーション技術シンポジウム2005論文集
雑誌名(英)
JAXA Special Publication: Proceedings of Aerospace Numerical Simulation Symposium 2005
巻
JAXA-SP-05-017
ページ
106 - 111
発行年
2006-02-28
抄録（英）
A high-resolution numerical atmospheric model for disaster prevention and safe civil aviation has been developed at Japan Meteorological Agency. With this model, numerical experiments of a coastal front over Kanto Plane occurred on 5 December 2004 associated with a highly developed low were carried out on the supercomputer of CeNSS because the high-resolution experiments in a large domain requires powerful computer resources. The model results showed that the three-dimensional structure of the coastal front was well reproduced as the model grid resolution becomes finer, from 2 km to 0.5 km. This result suggests the turbulent kinetic energy is estimated more appropriately at finer resolution. The performance of the high-resolution model was examined further by energy spectra of horizontal winds as a function of wave number (k). It was found that the energy spectra obeys approximately the k(exp -5/3) spectral character of the observational spectra; this suggests that the high-resolution model simulates well the atmospheric condition.
気象の高解像度数値予報
49212017.pdf
(2.95MB)
