positive center meaning in English

正电中心

During flood years , the center of negative anomaly is around ural mountains , the center of positive anomaly is around high - latitude of east asia and another negative and positive center are over okhotsk sea and the north - west pacific , respectively
通过对夏季旱涝等级指数的morlet型和mexicanhat型小波变换分析，发现山东夏季旱涝指数主要存在着2 5年和7年左右的周期振荡。
The article point out that the downward transport of the high moist potential vorticity from high level causes the development of low level cyclone . the rainfall may occur near the south area of positive center of mpv1 and negative region of mpv2 at 500hpa
在整个降水过程中，副热带高压稳定少动，其西北侧的暖湿气流为强降水提供了充沛的水汽条件，地面冷锋和高原低涡是其抬升机制。