地形云

Is there any factors that semigeostrophic theory has neglected is important? To answer this question, the numerical nonhydrostatic cloud model that takes consideration of frontogenesis of deformation field is used to investigate these problems.

利用考虑变形场作用的非静力云模式，我们对地面摩擦影响锋面结构和锋生、地形扰动与锋生的相互作用、湿物理过程对锋生的影响等诸方面问题进行了研究。

The frontogenesis process involves in the interactions among the systems of multiple scales. Since the hardness of the nonlinear problem, it is difficult to study frontogenesis analytically. The introduction of the effects of orography, friction and diabatic processes generally makes impossible the analytical resolution of the problem and leads to the use of numerical models. Primitive equations are numerical integrated together with a detailed description of physical processes. The circulation obtained is then used to diagnose and test theoretical mechanisms. It should be noted, however, that a fully description of frontogenesis in explicitly resolving the of large-, meso- and micro-scale flow in the same framework is not yet possible because of the excessive computer capacity and the time required. In order to deal with the problem, the action of large-scale background has been simplified and taken into consideration through the addition of the forcing into the nonhydrostatic cloud model.

大气锋生是一种多尺度相互作用的过程，理论研究遇到非线性的困难，在考虑地形、摩擦、非绝热等物理过程之后，解析研究更加棘手，通过数值模拟搞清其中的物理机制是重要的研究手段，但是把大、中、小尺度甚至微尺度的系统及其相互作用过程在一个模式里同时模拟好仍然受计算机速度和容量的限制，本论文在非静力云模式中通过强迫方式加入大尺度变形场的作用，在考虑到大尺度背景作用的同时，可以充分利用云模式所提供的丰富物理过程、非静力和高分辨率特点，开展一些过去较难进行的研究工作。

Terrain heightened can enhance blocking effect, which lead to strengthen water vapor flux divergence and vertical convection, and cloud water increases but centralizes in the middle-low level. This change intensify accretion of snow by collecting more supercooled cloud water, and rain water converts into graupel by collecting more snow, and dry growth of graupel increase at the same time. Rain water augment because of more graupel melting, and rain water continue to increase by collecting cloud water in the low level.

地形高度增加后，阻挡作用加强，使水汽通量辐合加强，垂直气流增大，中低层云水增多，导致雪撞冻过冷云水增多，促使了雨水撞冻雪转化为霰和霰干增长过程的加强，霰融化为雨水增多，低层雨水碰并云水加强，冷云过程得到增强。

Based on the above algorithms and methods, an experimental system is built, in which large scale landscape and seascape and ocean wave near shore are integrated.

综合应用以上研究成果，开发了一个包含大范围、多类型的陆地地形、海面场景、动态云景的大规模三维自然场景的建模与绘制实验系统。

Such asymmetry might be caused by both the environmental wind field and the structure of Typhoon AERE itself,and was favorable to AERE at maintaining its southwestward movement.

本文分析了戴云山脉地形对台风暴雨的作用，以及德化、安溪、南安和永春一带台风暴雨多发的原因。2、登陆福建台风的不对称结构对其移动路径和所造成的天气有重要的影响。

Mount Tai plays a very important role in the case and makes the positive and minus extremes of vertical velocity in the upslope and lee, respectively. Meanwhile it affects the distribution of rain water and cloud water.

地形在此回流暴雪过程中，通过其强迫的、分别位于迎风坡和背风坡的正负垂直速度中心，对降雪起明显的增幅作用，同时对雨水和云水分布产生影响。

Mountains towards the north east - southwest, from east to west There Daiyunshan, Lotus Hill, Luo Fu Shan, Nankunshan, Tien Lu Shan, Yunwushan, Yunkai mountains, large capacity 60000 Mountain and the mountains.

降水量分布受地形影响，莲花山、戴云山的向风坡年降水量可达180—200毫米，最大达2951毫米，暴雨强度也大，而莲花山北的梅江谷地和作为台湾山地雨影区的闽东南沿海仅1400毫米左右。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。