雷达回波区REA ？
强雷达回波和正负速度对、逆风区等特征对强降水具有指示意义。
Strong radar echoes and positive-negative velocity and head wind area are indicative to the heavy rainfall event.
应用闪电位置和强度资料与雷达回波图象相叠加，发现闪电出现频繁的区域，正好对应于雷达强回波区。
Put the lightnings' place and the intensity data on top of the radar echoes picture, it is found that the place where lightnings appear frequently is just the place where the radar echoes are strong.
雷达组合反射率因子图上，MCS 表现为回波组织性强、模态清晰，或移动，或静止，MCS 雷达回波分布特征决定雨带走向和落区；
The radar echoes for those MCSs are organized well, and some MCSs are moving, others are quasi-stationary. The echo distributions of MCSs indicate the precipitation areas.
人字形回波的左半支的雷达回波及对应的地面风速比右半分支弱，且无强对流区后部的层状云和地面雷暴高压、冷池等；
By contrast, there are no significant features of right branch such as stratiform cloud, thunderstorm high and cold pool in the left branch of the squall line.
人字形回波的左半支的雷达回波及对应的地面风速比右半分支弱，且无强对流区后部的层状云和地面雷暴高压、冷池等；
By contrast, there are no significant features of right branch such as stratiform cloud, thunderstorm high and cold pool in the left branch of the squall line.
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