位势涡度 meaning in English

potential vorticity

Using the model output with high spatial and temporal resolution , we study the characteristic and mechanism of the rainfall in more detail . the results show that dry intrusion not only consists but also plays an important role in the development of the heavy rain process
通过对此次暴雨过程中相对湿度及位势涡度的诊断分析，发现，此次暴雨过程中存在“干侵入”现象，并且“干侵入”的发生、发展对暴雨过程具有重要影响。
Through the thermodynamic analysis for the sandstorm weather according to the simulated potential temperature , potential vorticity field , it is found that this sandstorm weather occurred in the condition of the atmospheric stratification stability , the area of the high potential temperature value and the potential temperature gradient have a good corresponding relationship with the surface cold air and cold front , so are the strength of potential vorticity and the different developing stage of sandstorm
利用输出的位温、位势涡度场，对沙尘暴天气进行热动力条件分析，发现本次沙尘暴天气发生在大气层结稳定状态下，位温大值区及位温梯度与地面暖低压的强弱和移动有着很好的对应关系，位涡的水平分布特征和强弱变化对沙尘暴的出现时间和落区有一定的指示意义。