山东北部一次夏末雹暴地面降水粒子谱特征

为了更好地认识雹暴等强对流降水的微物理特征,利用降水现象仪观测资料和CINRAD/SA-D双偏振天气雷达的粒子相态识别和反射率因子等产品,分析2019年8月16日出现在山东北部的一次雹暴降水的雨、冰粒子谱(包括直径2～5 mm的霰粒子和直径大于5 mm的冰雹)的识别以及雨滴谱的演变特征,结果显示:济南双偏振天气雷达0.5°仰角PPI上在德州和陵县观测点附近识别的粒子主要为雨滴,临邑为冰雹加大雨;安装在3个观测点的降水现象仪均识别出少量冰粒子,3个观测点的冰粒子谱数密度低、分布不连续.雹暴降水开始阶段,出现少量大雨滴,这是风的筛选和蒸发作用导致的雨滴谱,具有低的小粒子数密度和较多大雨滴;雹暴强降...

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Published in应用气象学报 Vol. 32; no. 3; pp. 370 - 384
Main Authors 王俊, 王文青, 王洪, 张秋晨, 龚佃利, 杨学斌
Format Journal Article
LanguageChinese
Published 山东省人民政府人工影响天气办公室,济南250031%山东省德州市气象局,德州253000 01.05.2021
Subjects
粒子落速-直径关系
雹暴
冰雹
雨滴尺度分布谱
Online AccessGet full text
ISSN1001-7313
DOI10.11898/1001-7313.20210309

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Abstract 为了更好地认识雹暴等强对流降水的微物理特征,利用降水现象仪观测资料和CINRAD/SA-D双偏振天气雷达的粒子相态识别和反射率因子等产品,分析2019年8月16日出现在山东北部的一次雹暴降水的雨、冰粒子谱(包括直径2～5 mm的霰粒子和直径大于5 mm的冰雹)的识别以及雨滴谱的演变特征,结果显示:济南双偏振天气雷达0.5°仰角PPI上在德州和陵县观测点附近识别的粒子主要为雨滴,临邑为冰雹加大雨;安装在3个观测点的降水现象仪均识别出少量冰粒子,3个观测点的冰粒子谱数密度低、分布不连续.雹暴降水开始阶段,出现少量大雨滴,这是风的筛选和蒸发作用导致的雨滴谱,具有低的小粒子数密度和较多大雨滴;雹暴强降水增大阶段,雨滴谱特征是小雨滴数密度偏低、大雨滴较多,即总的雨滴浓度低、雷达反射率因子高;雨强减弱阶段,小雨滴数密度显著增大、大雨滴数密度偏少,即总的雨滴浓度显著增大,但雷达反射率因子偏低.
AbstractList 为了更好地认识雹暴等强对流降水的微物理特征,利用降水现象仪观测资料和CINRAD/SA-D双偏振天气雷达的粒子相态识别和反射率因子等产品,分析2019年8月16日出现在山东北部的一次雹暴降水的雨、冰粒子谱(包括直径2～5 mm的霰粒子和直径大于5 mm的冰雹)的识别以及雨滴谱的演变特征,结果显示:济南双偏振天气雷达0.5°仰角PPI上在德州和陵县观测点附近识别的粒子主要为雨滴,临邑为冰雹加大雨;安装在3个观测点的降水现象仪均识别出少量冰粒子,3个观测点的冰粒子谱数密度低、分布不连续.雹暴降水开始阶段,出现少量大雨滴,这是风的筛选和蒸发作用导致的雨滴谱,具有低的小粒子数密度和较多大雨滴;雹暴强降水增大阶段,雨滴谱特征是小雨滴数密度偏低、大雨滴较多,即总的雨滴浓度低、雷达反射率因子高;雨强减弱阶段,小雨滴数密度显著增大、大雨滴数密度偏少,即总的雨滴浓度显著增大,但雷达反射率因子偏低.
Author 王文青
王俊
王洪
龚佃利
杨学斌
张秋晨
AuthorAffiliation 山东省人民政府人工影响天气办公室,济南250031%山东省德州市气象局,德州253000
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Author_FL Gong Dianli
Wang Wenqing
Zhang Qiuchen
Wang Jun
Wang Hong
Yang Xuebin
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Keywords 粒子落速-直径关系
雹暴
冰雹
雨滴尺度分布谱
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Snippet 为了更好地认识雹暴等强对流降水的微物理特征,利用降水现象仪观测资料和CINRAD/SA-D双偏振天气雷达的粒子相态识别和反射率因子等产品,分析2019年8月16日出现在山东北部的...
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Title 山东北部一次夏末雹暴地面降水粒子谱特征
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