The shearing wind helicity and thermal wind helicity are introduced and applied to a northeastern cold vortex rainfall event.
引入切变风螺旋度和热成风螺旋度，并将其应用于东北冷涡暴雨的诊断分析。
The structure of cold vortex cloud system is catalogued by two types, the simple vortex structure and the occluded cyclone structure.
冷涡云系的结构可归纳为单纯的冷涡结构和具有锢囚气旋结构两类。
It is shown that: (1) the anomalous cold vortex activity in Northeast China in the early summer is quite in concert with persistent circulation anomalies near the Ural Mountains and Japan.
主要结果为：(1)初夏东北冷涡活动显著异常与上游乌拉尔山附近和下游日本附近的持续性异常环流相对应。
Study shows that the process is caused by cold vortex in the east of Mongolia and subtropical high, and mesoscale convective cloud cluster is the direct reason of the local severe heavy rainfall.
发现本次过程是由蒙古东部的低涡与副热带高压共同作用发生的，而局地大暴雨的直接原因是中尺度对流云团所造成的。
On Earth, the arctic Polar Vortex is typically located over eastern north America in Canada and plunges cold arctic air to the northern Plains in the United States.
在地球上，北极的极地涡流主要集中在北美洲东部的加拿大，将寒冷的北极空气卷入美国北部平原。
Adjusting the cold gas fraction can control the performance target of vortex tube with fixed other parameters, which offers some referring data for practice applications of vortex tube.
在其它参数一定的情况下，可以通过调节冷气流分量来改变涡流管的性能指标。为涡流管的实际应用提供了一定的参考数据。
The influence of inlet parameter and configuration and cold air fraction on the vortex board performance was investigated by experiment with air as a medium.
用实验方法研究了入口参数和冷流比对涡流板能量分离特性的影响。
For example, a non-geostrophic vortex in wind field on the 375 MB level can result in a high with the warm center in the troposphere and the cold center in the stratosphere.
例如375毫巴上单纯非地转风的流场的反气旋涡旋，适应后可建立起对流层暖性、平流层是冷性的高压系统。
As a simple device without moving parts, vortex tube is composed of nozzle, vortex chamber, separating plate, control valve, hot-end and cold-end.
由于冷端孔板的阻隔，外层气流便高速螺旋状向热端管运动，流动的涡流特性也同时向热端管运动而逐渐减弱。
While vortex in the cross-section promotes the mixing of cold and hot air near the wall with an enhancement in heat transfer.
而横向截面的涡团则促进冷气与壁面热气的掺混，提升了换热效果。
The vortex in Doppler velocity field, Echo tops, Vertical integrated liquid, lift stream and cold advection are significant in this rainfall case.
多普勒速度场、回波顶高、垂直液态含水量、对应的上升气流以及温度平流对这次降水具有预报指示意义。
When the baroclinicity of southwest vortex had not been built and where cold front existed, the rain belt may lie in anywhere of the left of southwest low level jet.
在西南涡斜压性未建立之前以及冷锋附近，暴雨区可位于低层西南风急流左侧的任何位置。
The genesis of cold pool in moving-out Southwest Vortex, north-trough with south -vortex, self-organizing, and non-organizing local system types results in a high momentum difference in the low-level.
在西南涡移出型、北槽南涡型、自组织型、非组织局地类型中，冷池的形成导致出现了低层的高动量偏差；
The genesis of cold pool in moving-out Southwest Vortex, north-trough with south -vortex, self-organizing, and non-organizing local system types results in a high momentum difference in the low-level.
在西南涡移出型、北槽南涡型、自组织型、非组织局地类型中，冷池的形成导致出现了低层的高动量偏差；
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