Finally, the radial dispersion of stationary vortex Rossby wave is discussed with wave ray method.
最后用波射线法讨论了定常涡旋罗斯贝波的径向频散。
Firstly, this paper designs a polar coordinate barotropic vorticity equation semi-spectral model and a quasi-geostrophic grid model in order to research the propagation of vortex Rossby waves and tropical cyclone intensity change entirely.
本文首先设计了一个极坐标系正压涡度方程的半谱模式、一个准地转格点模式对涡旋Rossby波传播和热带气旋强度变化进行了较为系统的研究。
Evidence suggests that 1 under more stable stratification, the basic flow, if moving faster at low and high levels (particularly in the presence of jets there), allows a resulting meso-β unsteady wave to propagate eastward with respect to basic flow and even at greater velocity compared with it; 2 vertical windspeed shear of basic flow causes instabilities of the TWT perturbation; 3 considering the second derivative of basic-flow wind with respect to z (denoted by zz≠ 0 which is simply given as β* hereafter) the expression for the phase velocity of vortex Rossby wave is obtained, which is unidirectional in propagation with respect to basic flow; 4 VRoW has its physical origin from β*, i. e., from z-varying heterogeneities of y-direction averaged vorticity of the basic flow field; 5 VRoW phase velocity is associated with zonal wave number k, its energy is dispersive and the group velocity exists in the x direction; 6 when windspeed meets the condition of β*, TWT disturbance instability may be that of mixed VRoW and gravity wave; 7 if basic flow is subject to linear shear but does not meet the condition of β*, the TWT instability is that of inertia-gravity wave.
在大气层结比较稳定的情况下，如果基本气流在低层和高层较大(有可能存在低空急流和高空急流)，此时产生的β中尺度不稳定扰动相对于基流向东传播，甚至于快速向东传播。基本气流在垂直方向上的风速切变对于中尺度横波型的扰动起着不稳定的作用。如果考虑基流的二次切变，可以得到涡旋Rossby波的相速度表达式，涡旋Rossby波相对于基本气流是单向传播的。涡旋Rossby波产生的物理根源是基本流场的风速二次切变，亦即基本流场y方向的平均涡度在空间z方向上的不均匀所致。涡旋Rossby波的相速度与纬向波数也有关，它的能量是频散的，其在纬向x方向也存在群速度。在基本流场的风速存在二次切变时，横波型不稳定可能是混合的涡旋Rossby重力波的不稳定；而在基本流场的风速仅仅存在线性切变，不存在二次切变时，横波型扰动的不稳定则是重力惯性波的不稳定。
East Asian summer monsoon; SSTA; warm pool; Rossby wave propagation; physical process
东亚夏季风；温温距平；暖池； Rossby波传播；物理过程
Because the Rossby number is very large, stratified hydraulic flow may explain the observations.
由于罗斯贝数量非常大，分层液压流量可以解释的意见。
For A-early F type MS stars, stellar chromospheric activity decrease with stellar rotation period, but increase with Rossby number; For M type MS stars, stellar chromospheric activity increase with stellar rotation period and Rossby number, and stellar chromospheric activity reach saturation at large color index; For the MS stars between mid-F to M type, stellar chromospheric activity decrease with stellar rotation period and Rossby number.
在第五章中，我们采用不同的磁活动指数研究了晚型恒星磁活动与恒星自转参量(自转周期、Rossby数)、磁活动与恒星色指数以及恒星磁活动指数之间的相关性。大样本分析显示晚型主序恒星的色球活动与恒星自转参量的研究晚型主序恒星的色球活动与恒星自转参量间的关系表现出对恒星光谱型的依赖。
Either in S-mode or in T-mode, the sum of the first 10 PCs exceeds 50% of the total mount of variation.
从主成分分析结果可以看到，在西北太平洋海域存在着Rossby驻波流态，且海平面的空间变化主要呈明显地纬向分布，从南到北，它们分别对应着赤道逆流、北赤道流以及黑潮，且黑潮的末端存在着明显的异常区。
The quasi 90-day fluctuation has the features of Rossby waves with a zonal wavelength of about 400-800km and a phase speed of 0.06-0.09m/s in STCC area.
利用2层半模式给出了副热带逆流和北赤道流区Rossby波稳定性的必要条件，指出了斜压不稳定是副热带逆流和北赤道流区上层海洋季节内振荡的生成机制。
My works in education and scientific research in the past 40 years were mainly following Rossby and Palman.
关于罗斯贝指导学生的风格，Lewis专门写信询问过谢义炳先生，谢先生是这样答复的
Among them, the Rossby wave is a most important mode.
其中最重要的是罗斯贝波。
At the same time, meridional wind stress also produces short Rossby wave. In addition, warm water is recruited to the equator district strongly at the west boundary, which indicates that meridional wind stress may have warm water conveyed to the equator.
另外，在西边界处存在很强的暖水补充到赤道的现象，经向风应力有使暖水向赤道输送的作用，而西风应力使西边界处的暖水向东输送。
When the basic zonal flow is barotropic, it is demonstrated that the cooling of the Tibetan Plateau in winter not only facilitates the meridional propagation of Rossby waves, but also is an important driving mechanism of the intraseasonal oscillations in the middle and high latitudes.
非绝热Rossby波的频率方程说明冬季高原的热力作用是中纬季节内振荡的重要激发机制。
With such integrative scheme, time step can be greatly enlarged. During the integration, the dynamical framework can preserve the Rossby-Haurwitz 4 wave pattern for a relative long period and keep available energy conservation in a higher precision. Rossby-Haurwitz wave speed calculated from the model is 15 degrees westward per day and is similar to the theoretical value.
结果表明，非线性迭代3次的时间积分方案具有较好的稳定性，能够有效地抑制短波，同时对长波的歪曲较小，且时间积分步长可放得较大；该框架能够较长时间地保持Rossby-Haurwitz 4波波型，在积分过程中能够较高精度地保持总有效能量守恒；模式计算的Rossby-Haurwitz波速为每天西传15个经度，这与理伦值很接近。
In these two regions, the radii diminished poleward and followed up with the baroclinic Rossby deformation radii.
在两个海域中，涡旋的半径均随纬度的增加有变小的趋势，与斜压罗斯贝变形半径变化趋势一致；
A high resolution shallow-water model is designed to study the roles which the topographical parameter and latitudinal basic flow play in the propagation of vortex Rossby waves and typhoon tangential velocity changes.
设计了一个高分辨率的浅水模式，以研究地形参数和纬向基流在涡旋Rossby波传播和台风切向风速变化中的作用。
Based on the (linear) free Rossby wave theory, the Antarctic circumpolar passage is the control sea area for the global Rossby wave adjustment.
在简单的线性自由Rossby波理论下，南极绕极通道是全球Rossby波调整的控制海区。
The basin modes of the linear free long Rossby wave of the Southern Ocean are investigated in the frameworks of quasi - geostrophy and the planetary geostrophy.
该论文分别在准地转框架下和行星地转框架下研究了南大洋的长Rossby波海盆本征模。
Starting from the linear shallow-water equations and using Arakawa A-E and Z grids, a study is made of inertia-gravitational and Rossby waves in the six grids from the perspectives of frequency and group velocity.
从线性浅水方程组出发，在ArakawaA-E网格和Z网格上，从频率和群速方面讨论了这六种网格对大气中的两种重要的波动：惯性重力波和Rossby波的描述能力。
Topographic Rossby waves nonlinear interaction causes sea water vertical motion and heat content redistribution in the upper sea level.
地形Rossby波非线性相互作用引起上层海水产生垂直运动，致使上层海水热含量重新分市。
Results of the test for the Ross-by Wave shown that for resoluble model Z, D and C grids have the best dispersion characteristics among all grids considered;
结果表明：在可分辨的惰况下，Z，D，C网格比其它网格对Rossby波产生的歪曲都要小；