| Item type |
会議発表論文 / Conference Paper(1) |
| 公開日 |
2015-03-26 |
| タイトル |
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タイトル |
気象の高解像度数値予報 |
| 言語 |
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言語 |
jpn |
| キーワード |
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主題Scheme |
Other |
|
主題 |
天気予報 |
| キーワード |
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主題Scheme |
Other |
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主題 |
数値天気予報 |
| キーワード |
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主題Scheme |
Other |
|
主題 |
気象モデル |
| キーワード |
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主題Scheme |
Other |
|
主題 |
降雨 |
| キーワード |
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主題Scheme |
Other |
|
主題 |
計算機シミュレーション |
| キーワード |
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主題Scheme |
Other |
|
主題 |
熱力学的平衡 |
| キーワード |
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主題Scheme |
Other |
|
主題 |
自転 |
| キーワード |
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主題Scheme |
Other |
|
主題 |
風プロファイル |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
|
主題 |
weather forecasting |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
|
主題 |
numerical weather prediction |
| キーワード |
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言語 |
en |
|
主題Scheme |
Other |
|
主題 |
climate model |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
rainfall |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
computerized simulation |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
thermodynamic equilibrium |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
rotation |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
wind profile |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_5794 |
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資源タイプ |
conference paper |
| その他のタイトル（英） |
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その他のタイトル |
High-resolution numerical weather prediction |
| 著者 |
中山, 寛
藤田, 司
Nakayama, Hiroshi
Fujita, Tsukasa
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| 著者所属 |
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気象庁 |
| 著者所属 |
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気象庁 |
| 著者所属（英） |
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|
en |
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Japan Meteorological Agency |
| 著者所属（英） |
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|
en |
|
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Japan Meteorological Agency |
| 出版者 |
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|
出版者 |
宇宙航空研究開発機構 |
| 出版者（英） |
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出版者 |
Japan Aerospace Exploration Agency (JAXA) |
| 書誌情報 |
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2004論文集
en : JAXA Special Publication: Proceedings of Aerospace Numerical Simulation Symposium 2004
巻 JAXA-SP-04-012,
p. 33-38,
発行日 2005-03-25
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| 抄録（英） |
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内容記述タイプ |
Other |
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内容記述 |
Numerical atmospheric models have been developed for operational weather forecasts at Japan Meteorological Agency (hereafter JMA) since 1959. These models, based on the system of the dynamic and thermodynamic equations, include important physical processes such as precipitation, radiation, turbulence, and so on which affect the dynamical and thermodynamical state of the atmosphere. Among the numerical operational models at JMA, a mesoscale model (MSM) with a 10 km resolution has been operated for the purpose of disaster prevention, especially for prediction of heavy rainfall, from 2001 through 31 August 2004. Its dynamics is based on a hydrostatic spectral model, in which hydrostatic balance is assumed in the vertical direction. This assumption holds well for meteorological phenomena whose horizontal scale is large enough compares to that in the vertical such as synoptic high/low pressure systems, but not for those at smaller scale such as cumulus convection. Since heavy rainfall is often produced by ensemble or cluster of cumulus convection, a non-hydrostatic model that can explicitly treat vertical air motion without any assumption or approximation is required in order to simulate atmospheric convection at finer scale. In addition, elaborate moist convection processes describing cloud microphysics responsible for precipitation formation as well as for diabatic heating/cooling in the atmosphere is indispensable to realistic simulations. Aiming at weather forecasts at finer scale near future, JMA has substituted a non-hydrostatical mesoscale model with a bulk microphysical model for the hydrostatic MSM from September 1 2004, the spatial resolution being the same for both model. The model basis comes from a non-hydrostatic model developed at the Meteorological Research Institute (MRI) since 1980s. Afterward, The MRI and the Numerical Prediction Division at JMA continue to collaborate on the model development. The non-hydrostatic mesoscale model presently operated is a fruit of this collaboration. High-resolution model simulations are made using the above-mentioned non-hydrostatic model, for a case of a typhoon and the associated localized rigorous convection on August 8 2003, which appeared to produce a strong downburst. In the simulations, horizontal grid spacings are chosen to be 5, 2, and 0.5 km. The finer the grid resolution becomes, the more realistic the representation of precipitation forecasts is. In addition, the simulated height of the mixed layer top at the 0.5 km resolution is found to be very close to that from a sounding data near by. In the future, the JMA plans to use finer resolution model down to around 2 km for operational purpose. |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
1349-113X |
| 書誌レコードID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA11984031 |
| 資料番号 |
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内容記述タイプ |
Other |
|
内容記述 |
資料番号: AA0048469005 |
| レポート番号 |
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内容記述タイプ |
Other |
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内容記述 |
レポート番号: JAXA-SP-04-012 |
48469005.pdf (839.2 kB)
