干旱气象 ›› 2021, Vol. 39 ›› Issue (3): 406-414.

• 论文 • 上一篇    下一篇

内蒙古西部地区降水云宏观特征

衣娜娜1,2,苏立娟1,2,郑旭程1,2,张敏1,2,弓泓1,2#br#   

  1. 1.内蒙古自治区气象科学研究所,内蒙古呼和浩特010000;
    2.内蒙古自治区人工影响天气重点实验室,内蒙古呼和浩特010000
  • 出版日期:2021-06-30 发布日期:2021-07-16

Macro Characteristics of Precipitation Clouds in Western Inner Mongolia

YI Nana1,2, SU Lijuan1,2, ZHENG Xucheng1,2, ZHANG Min1,2, GONG Hong1,2   

  1. 1. Research Institute of Meteorological Science of Inner Mongolia Autonomous Region, Hohhot 010000, China;
    2. Inner Mongolia Autonomous Region Key Laboratory of Weather Modification, Hohhot 010000, China
  • Online:2021-06-30 Published:2021-07-16

摘要: 基于自动站降水、雷达回波、卫星云图等资料,挑选2017及2018年内蒙古西部地区49次降水过程,利用L波段探空、风云卫星反演以及降水数据分析该地区降水云、无降水云与临近降水云的宏观结构。超过80%的样本统计结果显示降水云云底高度小于等于3.0 km,云顶高度大于等于8.0 km,云层厚度大于等于6.0 km,云夹层数小于等于2且夹层厚度小于等于0.6 km,云夹层分布稀疏。云光学厚度和液水路径作为降水云的指标判据具有一定的优势,近70%的样本表明,降水云光学厚度大于等于20,液水路径大于等于100 g·m-2。一般降水易发生在高光学厚度和高液水含量区及光学厚度大于等于55和液水路径小于等于500 g·m-2的降水云区。

关键词: 内蒙古西部地区, 降水云宏观特征, L波段探空, 卫星反演, 雨强

Abstract:  Based on the precipitation data from automatic stations, radar echoes products, and satellite cloud images in western Inner Mongolia, a total of 49 precipitation processes in 2017 and 2018 were selected. The macro characteristics of precipitation clouds, no precipitation clouds and approaching precipitation clouds in the study region were analyzed by using the Lband sounding data, FY2 satellite inversion products and precipitation data. More than 80% samples statistical results showed that the base altitude, top altitude and cloud layer thickness of precipitation clouds were less than or equal to 3.0 km, higher than or equal to 8.0 km and higher than or equal to 6.0 km, respectively. The number of cloud interlayer was less than or equal to 2 and the thickness of cloud interlayer was less than or equal to 0.6 km, the cloud interlayer distributed sparsely. The cloud optical thickness and liquid water path had certain advantages as an index and criterion for precipitation clouds. Nearly 70% of the samples indicated that the optical thickness and the liquid water path of precipitation clouds were higher than or equal to 20 and 100 g·m-2, respectively. The general intensity precipitation was more likely to occur in areas with higher optical thickness, higher liquid water content, or optical thickness was higher than or equal to 55 and liquid water path was less than or equal to 500 g·m-2.

Key words: western Inner Mongolia, macro characteristics of precipitation clouds, Lband sounding, satellite inversion, rainfall intensity