| 2009年天津首场大范围降水过程分析 |
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| 引用本文： | 靳瑞军,宋薇,王兆宇.2009年天津首场大范围降水过程分析[J].气象科技,2012,40(4):635-641. |
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| 作者姓名： | 靳瑞军 宋薇 王兆宇 |
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| 作者单位： | 1. 天津市人工影响天气办公室,天津,300074
2. 天津市人工影响天气办公室,天津300074;中国气象局云雾物理环境重点开放实验室,北京100081 |
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| 基金项目： | 国家科技支撑计划课题，中国气象局云雾物理重点实验室开放课题 |
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| 摘 要： | 基于多普勒天气雷达和天气图资料,并结合卫星反演云参数产品,对2009年4月18日出现在天津地区的一次大面积降水过程进行了分析,探讨了多普勒天气雷达资料在降水过程中的图像特征和卫星反演云参数分布特点,研究表明:①此次降水是层积混合云降水,主要受到500hPa河套低槽的影响,并配合地面江淮气旋的北上影响;②多普勒雷达反射率因子图上呈现出比较明显的初生、发展、维持、削弱四个阶段的特点,风廓线资料比较完整;③MODIS卫星过境时间,天津地区云粒子有效半径均在15μm以上,出现频数最多的云粒子有效半径为25～27μm,大气可降水与自动站雨量站1h降水量的大值区对应较好。
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| 关 键 词： | 降水过程 环流形势 多普勒天气雷达产品 MODIS云参数 |
| 收稿时间： | 2011/2/23 0:00:00 |
| 修稿时间： | 2011/8/25 0:00:00 |
Analysis of First Large Scale Precipitation Process in Spring in Tianjin |
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| Jin Ruijun,Song Wei and Wang Zhaoyu.Analysis of First Large Scale Precipitation Process in Spring in Tianjin[J].Meteorological Science and Technology,2012,40(4):635-641. |
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| Authors: | Jin Ruijun Song Wei and Wang Zhaoyu |
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| Institution: | 1 (1 Tianjin Weather Modification Office,Tianjin 300074;2 Key Laboratory for Cloud Physics and Weather Modification of CMA,Beijing 100081) |
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| Abstract: | Based on Doppler Weather Radar data,weather maps and satellite cloudy products,a large-scale rainfall on 18 April 2009 in Tianjin is analyzed.The characteristics of Doppler Weather Radar products and the distribution of cloud parameters during this rainfall process are discussed.The results show that：（1） it was a stratocumulus mix cloud precipitation process,affected by the Hetao low trough at 500 hPa and surface cyclones over the Yangtze-Huaihe River Valley;（2） the reflectivity of Doppler Radar presented the obvious multi-phased characteristic： forming,developing,maintaining,and weakening with the complete wind profiler data;（3） during the MODIS satellite passing time,the effective radius of cloud particles was above 15 μm,and the particle radius with the highest appearance frequency was 25 to 27μm.The area with the maximum atmospheric potential precipitation was consistent with the hourly precipitation of the automatic rainfall station. |
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| Keywords: | precipitation process circulation pattern Doppler Radar product MODIS cloud parameter |
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