查询词典 zonal

The stratospheric sudden warmings in 2002/2003 and 2003/2004 winters are analyzed using the daily four times ECMWF data. The differences of the average temperature and zonal wind are compared between these two winters, with calculating EP flux and the residual mean circulation.

利用ECMWF提供的60层气象场资料诊断分析了2002/2003和2003/2004年两个冬季的爆发性增温(stratospheric sudden warming， SSW)过程，比较了两次SSW期间高纬温度和纬向风的差异，计算了SSW期间的EP通量和剩余环流。

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。

The bony fish, or teleosts, are unique for the zonal distribution of pituitary cells in the pituitary, which is quite different from the random distribution reported in mammals.

硬骨鱼的脑下垂体细胞的分布有别於哺乳类的随机分布而是有特定区域分布。

Subscripts Z and E are for zonal and eddy components respectively.

下角标 z 和E分别表示纬向分量和旋涡分量。

Results reveal that, through such kind of gearing, the air-sea interaction in one ocean basin forced by the zonal-wind stress anomaly causes the air-sea interaction in the other ocean, and then results in anomalous SST there.

结果表明，在太平洋或印度洋上的大气异常信号通过印-太齿轮组合作为桥梁，影响到另一地的海气相互作用，从而将太平洋上的ENSO类年际变率信号与印度洋环流和亚洲季风纬向分量的变化联系起来。

The zonal winds were prograde during most of the atmospheric descent, providing in situ confirmation of superrotation on Titan.

带状的风在大部份大气降落期间探测出是与天体作同方向运行的，这个结果被非常规的对泰坦的 situ 探测中发现。

The concentric zonal structure of enclave was formed because of the obvious differential concentration of enclave and pluton components, physicochemical imbalance and interaction between enclave and magma.

包体与岩体在组分上具有明显的浓度差，在物理化学上是不平衡的，包体与岩浆之间必然发生交互反应，从而形成包体的同心环带构造。

When detecting the edge, an auto-choose threshold algorithm is given to reduce the salt-and-pepper or pulse wrong edges. After analyzing the special noise factor in pin's image, this paper improves the edge detection elements. That's putting forward a way which is named"the method of de-noise based on linear weighted operator template"to reduce the zonal or cluster noise. And test show that the algorithms detect image's edge rightly.

针对钻针图像的特点，在边缘检测中提出了自动选择阈值的算法；之后针对钻针图像中的特殊噪声形式，对边缘检测算法进行了原理上的改进，通过对图像的灰度分布的数学模型的建立，提出了使用加权直线模板去噪法进行块状噪声的去除；通过上述算法的应用，良好地改善了图像处理的质量。

Integration of the Permian-Triassic paleoclimates in individual blocks in the eastern Tethys indicates that zonal circulation dominated the period of Permian and Late Triassic.

对东特提斯地区二叠—三叠纪古气候特征及其演化的系统分析表明，二叠纪—晚三叠世期间东特提斯地区分带型气候特征仍然较为清楚。

Integration of the Permian-Triassic paleoclimates in individual blocks in the eastern Tethys indicates that zonal circulation dominated the period of Permian and Late Triassic.

摘 要 对东特提斯地区二叠—三叠纪古气候特征及其演化的系统分析表明，二叠纪—晚三叠世期间东特提斯地区分带型气候特征仍然较为清楚。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。