| 不同天气系统宁夏夏季降雨谱分布参量特征的观测研究 |
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| 引用本文： | 牛生杰,安夏兰,桑建人.不同天气系统宁夏夏季降雨谱分布参量特征的观测研究[J].高原气象,2002,21(1):37-44. |
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| 作者姓名： | 牛生杰 安夏兰 桑建人 |
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| 作者单位： | 1. 南京气象学院研究生部,江苏,南京,210044;宁夏气象科学研究所,宁夏,银川,750002
2. 宁夏气象科学研究所,宁夏,银川,750002 |
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| 摘 要： | 利用 1982— 1984年 6～ 9月份在 7个气象站 2 0 0次观测获取的 6 0 5 3份滴谱资料 ,分析了宁夏雨滴谱及有关物理量的特征。宁夏地区夏季降水平均雨滴空间浓度数为 2 85个·m-3 ,平均谱可以描述为N(Di) =2 0 9.2exp(- 2 .6 335Di)。文中给出了不同雨强下的平均谱分布及谱参数的演变和影响降水的 3种环流形势下的平均滴谱特征 ,还分别建立了雷达反射率因子Z与雨强、雨滴落地动能通量和雨水含量之间的相关关系。这些资料可用于雷达定量测定降水和区域降水量、水土保持和生态环境建设
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| 关 键 词： | 夏季 降水 物理特征 雨滴谱 谱参数 降水量 天气分析 |
| 文章编号： | 1000-0534(2002)01-0037-08 |
| 修稿时间： | 2000年2月3日 |
Observational Research on Physical Feature of Summer Rain Dropsize Distribution under Synoptic Systems in Ningxia |
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| NIU Sheng-jie{,},AN Xia-lan,SAN Jian-ren.Observational Research on Physical Feature of Summer Rain Dropsize Distribution under Synoptic Systems in Ningxia[J].Plateau Meteorology,2002,21(1):37-44. |
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| Authors: | NIU Sheng-jie{ } AN Xia-lan SAN Jian-ren |
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| Institution: | NIU Sheng-jie+{1,2},AN Xia-lan+2,SAN Jian-ren+2 |
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| Abstract: | Rain drop size distribution(RDSD) have been measured at 7 meteorological stations in Ningxia during June to September from 1982 to 1984. 46 precipitation processes are observed and 6053 cases of RDSD were obtained. The features of RDSD and its physical parameters are analyzed combining general circulation patterns and synoptic systems. The mean space concentration of rain drop are 285 m -3, and mean RDSD can be written as %N(D-i%)=209.2exp(-2.6335%D-i%). The relationship between radar reflectivity and rainfall intensity, rainfall kinetic momentum flux, rainwater content is established respectively. The relations can be used in rainfall and area rainfall prediction by radar quantitatively. |
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| Keywords: | Summer precipitation Physical feature Rain drop size distribution Spectral parameter |
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