On the Quantification of Imbalance and Inertia–Gravity Waves Generated in Numerical Simulations of Moist Baroclinic Waves Using the WRF Model
On the Quantification of Imbalance and Inertia–Gravity Waves Generated in Numerical Simulations of Moist Baroclinic Waves Using the WRF Model
复制标题
使用 WRF 模型量化湿斜压波数值模拟中产生的不平衡和惯性重力波
DOI：
10.1175/jas-d-16-0366.1
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发表时间：
2017
影响因子：
3.1
通讯作者：
R. Plougonven
中科院分区：
文献类型：
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作者：
M. Mirzaei;A. Mohebalhojeh;C. Zülicke;R. Plougonven
高层急流-地面锋系统产生的惯性重力波的定量化及其在全球大气模式中的参数化依赖于合适的方法来估计惯性重力波的强度。谐波发散分析（HDA），以前已经采用的IGW的量化相结合的线性动力学与复杂的统计分析，以提供这样的估计波的属性。由此产生的一个至关重要的问题是，HDA提供的IGW活动的测量值与来自波涡分解（WVD）方法的测量值之间的关系。利用一阶δ-γ非线性平衡关系、Bolin-Charney非线性平衡关系和一阶至三阶Rossby数展开式进行WVD。本文用天气研究与预报模式（WRF）在f平面上对一个通道中的湿斜压波进行数值模拟，比较了HDA和WVD给出的IGW的全球动能。
AbstractQuantification of inertia–gravity waves (IGWs) generated by upper-level jet–surface front systems and their parameterization in global models of the atmosphere relies on suitable methods to estimate the strength of IGWs. A harmonic divergence analysis (HDA) that has been previously employed for quantification of IGWs combines wave properties from linear dynamics with a sophisticated statistical analysis to provide such estimates. A question of fundamental importance that arises is how the measures of IGW activity provided by the HDA are related to the measures coming from the wave–vortex decomposition (WVD) methods. The question is addressed by employing the nonlinear balance relations of the first-order δ–γ, the Bolin–Charney, and the first- to third-order Rossby number expansion to carry out WVD. The global kinetic energy of IGWs given by the HDA and WVD are compared in numerical simulations of moist baroclinic waves by the Weather Research and Forecasting (WRF) Model in a channel on the f plane...