| 一次雨夹雪转暴雪天气过程的微物理模拟研究 |
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| 引用本文： | 王亮,王春明.一次雨夹雪转暴雪天气过程的微物理模拟研究[J].气象与环境学报,2010,26(2):31-39. |
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| 作者姓名： | 王亮 王春明 |
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| 作者单位： | 1. 解放军理工大学气象学院，江苏 南京211101;2. 解放军93220部队司令部气象台，黑龙江 哈尔滨 150048 |
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| 摘 要： | 利用非静力平衡中尺度数值模式MM5,在四重嵌套网格区域内采用Reisner霰方案,对2009年2月12—13日辽宁雨夹雪转暴雪天气过程进行数值模拟,并对云内微物理过程特别是对雨水、雪和霰的源项进行分析。结果表明:雨水与雪碰并和雨水与云水碰并是产生雨水的主要微物理过程,并且雨水的增长主要分布在700 hPa以下。300—200 hPa之间雪的凝华增长、冰晶向雪的自动转化和900 hPa以下雨水与雪碰并成雪是雪增长主要的物理过程。冰晶向雪的自动转化对降雪的增长和长时间维持起到了重要作用。列出了此次天气过程降水云系的三层云结构及微物理过程模型。
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| 关 键 词： | 雨夹雪转暴雪天气 微物理过程 |
| 收稿时间： | 2009-11-5 |
| 修稿时间： | 2010-1-6 |
Numerical simulation on microphysical processes of a rain and snow becoming heavy snow case |
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| WANG Liang,WANG Chun-ming.Numerical simulation on microphysical processes of a rain and snow becoming heavy snow case[J].Journal of Meteorology and Environment,2010,26(2):31-39. |
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| Authors: | WANG Liang WANG Chun-ming |
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| Institution: | 1. Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101, China; 2. Command Observatory of 93220 Army, Haerbin 150048, China |
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| Abstract: | Based on the nonhydrostatic mesoscale model MM5 with the Reisner graupel scheme in four nested domains,the rain and snow becoming heavy snow process on February 12 and 13,2009 was simulated in Liaoning province,and microphysical process within cloud was analyzed,especially the source terms of rain,snow and graupel.The results indicate that the collisions between rain and snow and between rain and cloud water both are the main microphysical process forming rain.The increased rain mainly occurs under 700 hPa.... |
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| Keywords: | Rain and snow becoming heavy snow Microphysical processes Numerical simulation |
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