llj

Statistic Analysis on the South-Westerly LLJ in China

中国西南低空急流活动的统计分析

Development of the Fourth Kind of Wheel Inspectors Type LLJ 4

LLJ-4型车轮第四种检查器的研制

The analysis of the relationship between pulse of LLJ and heavy rain using Wind Profiler Data

利用风廓线雷达资料分析低空急流的脉动与暴雨关系

The analysis of the characteristics of low-level-jet ( llj ) in Hilly Area

丘陵山区低空急流特性分析

The monthly changes , daily variety regulations and survival environment differences of LLJ in Northeast China and South China are also large .

东北、华南两地的低空急流，其月际变化和日变化规律以及生存环境差异也很大。

Analysis of The Low-level Jet ( LLJ ) Effect on Typhoon Torrential Rain in Guangxi and The Conceptual Model

低空急流对广西热带气旋特大暴雨的影响及概念模式

By using boundary layer data actually measured in hilly area , we analyse the characteristics and evolutional law of LLJ in August and September in that area ;

利用丘陵区边界层实测资料，分析了该地区8～9月份低空急流的特征及其演变规律；

Climatic Analysis between the Activity of Chinese South-Westerly Strong Wind ( LLSW ) and Low-level Jet ( LLJ ); Canaries current

中国西南低层大风与西南风低空急流活动的气候学分析

From the top layer to the low layer the center location of LLJ over Bohai rim gradually eastward and the strength to achieve the strongest at night .

环渤海地区低空急流的中心从高层到低层由西北部逐渐东移，且基本符合在晚上达到最大的特征。

The results show that the reduction in wind speed near the convective region in upper levels and passage through the rainfall center of the intensifying LLJ played crucial role in the event .

结果表明：高空对流区附近风速减小和低空急流核加强并通过暴雨区对暴雨起决定性的影响；潜热的反馈作用、下垫面提供的热量和水汽通量对降水有重要影响。

The gravity wave dispersion can promote the propagation of the strong wind center along the LLJ , and the dispersion direction was influenced by the steering flow and the water vapor concentrated area .

重力波的频散有利于急流中心大风区的传播，引导气流和水汽集中区对传播方向有显著影响；

The formation and motion of the LLJ is closely related with the southern branch westerly trough on middle level , the divergence in front of southern branch westerly trough provide major start-up mechanism for forming the LLJ .

低空急流的形成和移动与中层南支槽的关系较为密切，南支槽前的辐散为低空急流的形成提供了启动机制。

A review regarding the investigation of the background circulation of large scale low-level jet over East Asia is given , which indicates the important effect of the monsoon westerlies on LLJ and the relationship between LLJ and cross-equatorial currents .

本文介绍了关于东亚大尺度低空急流背景流场的研究，指出其上游的季风西风带对它的重要作用，以及它与东非地区越赤道气流之间的关系。

The M α CS occurred over the mesoscale convergence line ( or convergence center ) located south of a shear line in the lower-level jet ( LLJ ) field during its occurrence and development and became a clear low vortex during its weakening and dissipative stage .

MαCS发生在低层切变线南侧的中尺度辐合线（或辐合中心）上，并在减弱阶段演变为明显的低涡结构；

The main conclusions are summarized as follows : The Bohai rim is divided into three parts according to the characteristics of LLJ : located in the northeast Bohai rim ( Liaodong Peninsula ), in the northwest ( Beijing and Chifeng ) and in the south ( Shandong Peninsula ) .

主要结论如下：把环渤海地区按低空急流的特征划分为三个部分：位于环渤海地区东北部（辽东半岛），西北部（北京、赤峰）和南部（山东半岛）。