NUMERICAL SIMULATIONS OF THE SATURATED GRAVITY-WAVE SPECTRA IN THE ATMOSPHERE

NCU Institutional Repository > 理學院 > 物理研究所 > 期刊論文 > Item 987654321/39357

請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/39357

題名:	NUMERICAL SIMULATIONS OF THE SATURATED GRAVITY-WAVE SPECTRA IN THE ATMOSPHERE
作者:	HUANG,CM;KUO,FS;LUE,HY;LIU,CH
貢獻者:	物理研究所
關鍵詞:	UNIVERSAL SPECTRUM;MOMENTUM FLUXES;MST RADAR;TURBULENCE;STRATOSPHERE;AUSTRALIA;ADELAIDE
日期:	1992
上傳時間:	2010-07-08 14:13:16 (UTC+8)
出版者:	中央大學
摘要:	A two dimensional numerical model is used to compute the saturation of small scale gravity waves in the region near the critical level. The vertical wave number spectrum of horizontal velocity fluctuations in the unstable region (USR) where shear instability develops is found to be governed by wave-shear interaction and follows a theoretical saturation spectrum approximately omega(b)2/2m3. Wave-shear interaction is also found to be responsible for the observed fact that the variance of vertical velocity fluctuations is significantly lower than the level predicted by linear gravity wave theory. On the other hand, the corresponding spectrum in the stable region (SR) following a much shallower spectrum approximately m-2 is found to result from the combined effects of wave-wave interactions and eddy diffusion. The key step in our simulation is the separate parameterization of horizontal and vertical eddy diffusion coefficients instead of a constant molecular viscosity coefficient.
關聯:	JOURNAL OF ATMOSPHERIC AND TERRESTRIAL PHYSICS
顯示於類別:	[物理研究所] 期刊論文

文件中的檔案:

檔案	描述	大小	格式	瀏覽次數
index.html		0Kb	HTML	515	檢視/開啟

在NCUIR中所有的資料項目都受到原著作權保護.

社群 sharing