cold trough meaning in English
冷槽
Examples
- The diagnostic analysis for the sandstorm process on the base of height , temperature , pressure and wind etc output from the model shows that the upper cold trough , low - level wind shear , surface cold anticyclonic ridge , mesoscale cyclone and cold front are the main synoptic systems , surface cold anticyclonic ridge and cold front provide condition of wind force to occurrence of the sandstorm weather , the strong mesoscale cyclone before front makes pressure gradient before and after cold front obviously strengthen , moreover , and it increases obviously the temperature of the controlled area , as a result , the updraft movement caused by convergence before front strengthens
500hpa强锋区、 700hpa切变和锋前中尺度系统的强弱及位置变化是沙尘暴天气发生发展到减弱的直接原因。地面冷高压、地面气旋及冷锋是造成本次沙尘暴天气的主要地面天气系统。地面冷高压及冷锋为沙尘暴天气的发生提供了风力条件，而中尺度气旋使冷锋前后气压梯度明显增强外，又使所控制的区域增温明显，使锋前辐合上升运动加强，为沙尘暴天气的发生提供了热、动力条件。