The main results are as follows: The dry zone and high potential area above middle-level corresponded well with dark zone in WV image, which showed the dry intrusion was obvious.
结果表明： 北京地区高低层配置符合干侵入三维模型， 中层以上的干区与水汽图像的暗区相吻合， 同时配合有自高纬向低纬传播的高位涡带， 北京地区干侵入特征明显。
The feature of dry air intrusion is also analyzed, it is different from the "7.18" torrential rain occurred in Jinan and mainly presents a zonal intrusion characteristic.
对干侵入特征的分析表明，这次强降水事件中干空气主要以纬向侵入为主，这与济南“7.18”暴雨不同。
The feature of dry air intrusion is also analyzed, it is different from the "7.18" torrential rain occurred in Jinan and mainly presents a zonal intrusion characteristic.
对干侵入特征的分析表明，这次强降水事件中干空气主要以纬向侵入为主，这与济南“7.18”暴雨不同。
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