| 乌鲁木齐地区两种类型降水的雨滴谱特征 |
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| 引用本文： | 冯婉悦,赵城城,杨莲梅,王智敏,苏朝丞.乌鲁木齐地区两种类型降水的雨滴谱特征[J].新疆气象,2021,15(3):55-61. |
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| 作者姓名： | 冯婉悦 赵城城 杨莲梅 王智敏 苏朝丞 |
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| 作者单位： | 新疆维吾尔自治区气象技术装备保障中心,山东潍坊市气象局,中国气象局气象沙漠研究所,新疆人工影响天气办公室,新疆乌鲁木齐市气象局 |
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| 基金项目： | 中国沙漠气象科学研究基金（Sqj2019007）；国家重点研发计划项目（2018YFC1507502） |
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| 摘 要： | 利用乌鲁木齐2018年1-12月雨滴谱仪观测数据，分析了两种类型降水（雨、雨加雪）滴谱的微物理参量，以探究乌鲁木齐不同类型降水的雨滴谱特征，此外，对Nt-R、Z-R等关系也进行了研究。结果表明：（1）两类降水的雨滴谱均为单峰分布，粒子浓度峰值均在低谱段，雨夹雪的滴谱宽度约为0.31~7.50 mm，雨的谱宽为0.31~5.50 mm。（2）雨的平均粒子尺度参数（如质量加权平均直径Dm）和降水强度R均略大于雨夹雪，而雨夹雪的平均总粒子数浓度Nt比雨的大23.7%。（3）文中拟合得到的雨、雨加雪Z-R关系分别为Z=181.7R1.45、Z=205.4R1.27，与传统天气雷达降水估测关系Z=300R1.4对比分析后，发现利用Z=300R1.4进行降水估测时存在低估现象，而对降雨的估测误差更大。
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| 关 键 词： | 雨滴谱 降水 Z-R关系 乌鲁木齐 |
| 收稿时间： | 2020/8/12 0:00:00 |
| 修稿时间： | 2020/11/5 0:00:00 |
Analysis of raindrop size distribution ofdifferent precipitation in Urumqi |
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| FENG Wan-yue,Zhao Cheng-cheng,YANG Lian-mei,WANG Zhi-min and SU Zhao-cheng.Analysis of raindrop size distribution ofdifferent precipitation in Urumqi[J].Bimonthly of Xinjiang Meteorology,2021,15(3):55-61. |
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| Authors: | FENG Wan-yue Zhao Cheng-cheng YANG Lian-mei WANG Zhi-min and SU Zhao-cheng |
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| Institution: | Xinjiang Meteorological Technology and Equipment Support Center,Weifang Meteorological Bureau,Shandong Weifang,Institute of Desert Meteorology of CMA,Xinjiang Urumqi,Xinjiang Weather Modification Office,Xinjiang Urumqi,Xinjiang Urumqi Meteorological Bureau,Xinjiang Urumqi |
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| Abstract: | Based on disdrometer data of Urumqi station from January to December in 2018, the microphysical parameters of two types precipitation (rain, sleet) were analyzed to explore the raindrop size distribution (DSD) of different precipitation. In addition, the relationship Nt-R and Z-R were also studied. The main results were as follows. (1)The DSD of two types precipitation showed a single peak distribution, and the peak concentrated in the low spectral range. Among that, the spectrum width of sleet was 0.31~7.50 mm , and that of rain was 0.31~5.50 mm. (2) The average particle size parameters (such as mass-weighted mean diameter Dm) and precipitation rate(R) of rain are slightly larger than those of sleet, while the total particle number concentration of sleet is about 23.7% higher than that of rain. (3) The Z-R relationship fitted of rain and sleet was Z=181.7R1.45 and Z=205.4R1.27 respectively. Compared with the traditional weather radar estimation relationship Z = 300R1.4, it was found that there was underestimation using Z = 300R1.4, and the estimation error of rainfall was larger. |
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| Keywords: | raindrop size distribution precipitation Z-R relationship Urumqi |
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