重力波对中间层和低热层大气环流的影响
文献类型：期刊论文
| 作者 | 胡雄 ; 张训械 ; 张冬娅 |
| 刊名 | 空间科学学报
 |
| 出版日期 | 2005 |
| 卷号 | 25期号:2页码:111-117 |
| 关键词 | 重力波参量化 大气环流 中间层 湍流扩散 平流层 |
| ISSN号 | 0254-6124 |
| 其他题名 | Effects of Atmospheric Gravity Waves on the Mesosphere and Lower Thermosphere Circulations |
| 通讯作者 | 北京8701信箱 |
| 中文摘要 | 利用β通道准地转近似大气平均运动方程组,采用重力波线性饱和参量化方法,定性地研究大气重力波对中间层和低热层大气环流的作用.模拟计算得到,大气重力波对平均东西风速可产生100m·s^-1/d左右的作用力和产生120m^2/s的湍流扩散,这些作用平衡了Coriolis扭力,导致大气的平均东西风速大大偏离辐射平衡风场,中层顶附近的平均东西风速在冬季(夏季)甚至反转为东风(西风).平均东西风速计算结果与冬季和夏季中频雷达东西风速观测值和大气模式剖面等大致一致. |
| 英文摘要 | Atmospheric gravity waves generated in the lower atmosphere, carrying momentum and energies, propagated upward and usually became saturated and breaking in the Mesosphere Thermosphere (MLT) due to their increasing amplitudes versus increasing height. Linear saturation parameterizations of atmospheric gravity waves applied with the -channel geostrophic circulations. mean flow equations to qualitatively investigate influences of gravity waves on quasi-MLT Three waves with 0 ms-1, 20 m}s-i-20 ms-1 horizontal phase speeds respectively taken as a parameterization of the discrete spectrum of gravity waves. Simulations show that the accelerations due to waves can be 100 ms-1/d and eddy diffusion coefficients can be 120 m2/s in the mesosphere, which balance the Coriolis force due to MLT meridional circulations departures of the zonal mean zonal winds from the radiation balance zonal winds. and induce great The of the zonal mean zonal winds of MLT are qualitatively consistent with the MF radar calculations observations and model profiles both in winter and summer time. Results show gravity waves play significant role in MLT circulations. |
| 学科主题 | 空间环境 |
| 收录类别 | CSCD |
| 资助信息 | 国家自然科学基金资助项目 |
| 语种 | 中文 |
| CSCD记录号 | CSCD:1920735 |
| 源URL | [http://ir.cssar.ac.cn/handle/122/467]  |
| 专题 | 国家空间科学中心_空间环境部 |
| 推荐引用方式 GB/T 7714 | 胡雄,张训械,张冬娅. 重力波对中间层和低热层大气环流的影响[J]. 空间科学学报,2005,25(2):111-117. |
| APA | 胡雄,张训械,&张冬娅.(2005).重力波对中间层和低热层大气环流的影响.空间科学学报,25(2),111-117. |
| MLA | 胡雄,et al."重力波对中间层和低热层大气环流的影响".空间科学学报 25.2(2005):111-117. |
入库方式： OAI收割
来源：国家空间科学中心
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