Constraints on a Non-orographic Gravity Wave Drag Parameterization Using a Gravity Wave Resolving General Circulation Model
Constraints on a Non-orographic Gravity Wave Drag Parameterization Using a Gravity Wave Resolving General Circulation Model
复制标题
使用重力波解析大气环流模型对非地形重力波阻力参数化的约束
DOI：
10.2151/sola.2008-016
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发表时间：
2008
期刊：
影响因子：
1.9
通讯作者：
S. Watanabe
中科院分区：
文献类型：
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作者：
S. Watanabe
利用T213L250重力波(GW)解析大气环流模式(GWR-GCM)的结果，对Hines提出的非地形GW阻力参数化(GWDP)的GW源谱进行了约束。在这项研究中，对Hines的GWDP施加了以下两个限制：1)指定GW源谱的发射高度，2)GW源谱，即GW动量通量和水平风幅的地理和方位随季节变化的分布。考虑到GWS横向传播的重要性，在Hines的GWDP中忽略了这一点，GW源谱是利用GWR-GCM在70hPaGWR-GCM提供的信息确定的，其中GWS已经在其源区横向传播了一段距离。GW源谱具有显著的地理变化和各向异性，反映了源区的分布和背景流引起的临界水平滤波的影响。尽管忽略了GWS的横向传播和间歇性的影响，但T42L80化学耦合气候模式在GWDP的约束下，真实地再现了平流层和中层纬向风急流的经向结构。
The results of a T213L250 gravity wave (GW) resolving general circulation model (GWR-GCM) are used to constrain the GW source spectra of a non-orographic GW drag parameterization (GWDP) proposed by Hines. In this study, the following two constraints were placed on Hines’s GWDP: 1) the launch level at which GW source spectra are specified, and 2) the GW-source spectra, that is, the seasonally varying geographical and azimuthal distribution of GW momentum flux and horizontal wind amplitude. Considering the importance of the lateral propagation of GWs, which is ignored in Hines’s GWDP, the GW source spectra are prescribed using information from the GWR-GCM at 70 hPa, where the GWs have already propagated laterally some distance from their source regions. The GW-source spectra have significant geographical variations and anisotropy, reflecting source distribution and the effects of critical level filtering due to the background flows. Although the effects of the lateral propagation and intermittency of GWs are ignored, a T42L80 chemistry coupled climate model using the GWDP with the constraints developed in this study realistically reproduced the meridional structures of the zonal wind jets in the stratosphere and mesosphere.
在地球模拟器上开发综合地球系统模型
DOI：
--
发表时间：
2005
期刊：
Journal of the earth Simulator Vol.4
影响因子：
--
作者：
Tomita;T.;M.Nonaka;M.Gauss;Michio Kawamiya
通讯作者：
Michio Kawamiya