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投稿时间:2025-04-23 修订日期:2025-11-23
投稿时间:2025-04-23 修订日期:2025-11-23
中文摘要: 为研究珠穆朗玛地区对流云降水特征,基于第二次青藏高原综合科学考察研究项目,采用多源遥感探测设备首次在珠穆朗玛峰北坡开展为期近6年的对流云降水综合观测。采用数据质量控制、反演和统计等方法开展对比分析,研究结果表明珠穆朗玛地区相较于其他地区具有独特的对流云降水结构特征:宏观特征方面,降水发生频次高但持续时间短,多为孤立对流单体且降水云水平尺度和垂直延展厚度远小于其他地区,边界层的雨强较弱;微观特征方面,在不同大气垂直温度廓线分布条件下,降水在边界层出现霰和液态雨滴两种相态,雨滴谱较窄,降水粒子数浓度较高,降水粒子等效直径较小。此次科学考察填补了珠穆朗玛地区对流云降水特征精细化观测空白。
Abstract:In order to study the characteristics of convective cloud precipitation in Mount Oomolangma Region (MOR), the comprehensive observation with multi-source remote sensing detection equipment for convective cloud precipitation on the northern slope of Mount Oomolangma about 6 years was conducted based on the second comprehensive scientific investigation and research plan of the Qinghai-Xizang Plateau. In this paper, the methods such as data quality control, data retrieval and data statistics are adopted to carry out comparative analysis, and the results show that precipitation in the MOR has unique structural characteristics of convective cloud precipitation compared to the precipitation in other regions. In terms of macroscopic characteristics, the MOR precipitation occurs frequently but has a short duration, most of which are isolated convective cell. The horizontal scale and vertical extension thickness of the precipitation are much smaller than in other areas, and rainfall rate is weak in the boundary layer. As for microscopic characteristics, there are two phases of precipitation (graupel and liquid raindrops) in the boundary layer under different vertical profile distributions of atmospheric temperature, with distinctive characteristics of a narrow raindrop size distribution width, higher raindrop number concentration and smaller raindrop equivalent diameter. This study may bridge the gap in detailed observations of the synoptic structure of the convective cloud precipitation on the northern slope of the MOR in summer and provide a significant reference for further researches on the changes in the weather conditions in Qinghai-Xizang Plateau and their potential impacts on the East Asian climate.
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基金项目:第二次青藏高原综合科学考察研究项目(2019QZKK0103、2019QZKK0105)、中国气象局雷达气象重点开放基金项目(2024LRM-B04)、四川省科技厅地方科技发展专项(2023ZYD0147)和高原院川西南雅安分中心科技发展基金项目(CXNBYSYSYWZD202402)共同资助
引用文本:
王磊,刘平,李跃清,徐祥德,王鸽,2026.珠穆朗玛地区对流云降水综合观测及特征[J].气象,52(3):273-286.
WANG Lei,LIU Ping,LI Yueqing,XU Xiangde,WANG Ge,2026.Comprehensive Observation and Characteristic Analysis of Convective Cloud Precipitation in Mount Oomolangma Region (MOR)[J].Meteor Mon,52(3):273-286.
王磊,刘平,李跃清,徐祥德,王鸽,2026.珠穆朗玛地区对流云降水综合观测及特征[J].气象,52(3):273-286.
WANG Lei,LIU Ping,LI Yueqing,XU Xiangde,WANG Ge,2026.Comprehensive Observation and Characteristic Analysis of Convective Cloud Precipitation in Mount Oomolangma Region (MOR)[J].Meteor Mon,52(3):273-286.
