XU Huo,XIAO Tian-gui,LI Yue-qing.Simulation and Analysis of Two Summer Heavy Rainfall in Sichuan Basin with Different Planetary Boundary Layer Schemes of WRF Model[J].Journal of Chengdu University of Information Technology,2017,(02):175-183.[doi:10.16836/j.cnki.jcuit.2017.02.011]
WRF模式不同边界层参数化方案对四川盆地 夏季两次强降水的模拟分析
- Title:
- Simulation and Analysis of Two Summer Heavy Rainfall in Sichuan Basin with Different Planetary Boundary Layer Schemes of WRF Model
- 文章编号:
- 2096-1618(2017)02-0175-09
- Keywords:
- meteorology; WRF model; Sichuan basin; heavy rainfall; planetary boundary layer schemes; TS score
- 分类号:
- P458.1+21.1
- 文献标志码:
- A
- 摘要:
- 使用中尺度模式WRF3.6研究不同边界层参数化方案对四川盆地夏季强降水的影响。通过只改变边界层参数控制其他物理参数化方案不变的方法,模拟2次四川盆地强降水来试验不同边界层参数对降水的影响。结果表明:5种边界层参数化方案,从降水分布来看除边界层参数YSU表现的偏西之外,其他参数都能模拟主要的降水中心和大致的强降水范围,但是对于盆地南部宜宾周边地区的强降水两组模拟试验都未能预报出降水。模拟的垂直速度与降水中心的模拟较好地对应。从TS评分来看,小雨和大暴雨的评分是所有降水等级里面平均评分最高的,而各种边界层参数之间的TS评分差异明显,边界层参数化的选择对TS评分影响较大。
- Abstract:
- In this paper, the effects of different boundary layer parameterization schemes on the strong precipitation in summer in Sichuan basin are studied by using the mesoscale model WRF3.6. The influence of different boundary layer parameters on precipitation is simulated by using the method which only changes the boundary layer parameters to control other physical parameterization schemes. The results show that the 5 schemes of boundary layer parameters from precipitation distribution in addition to the boundary layer parameters of the YSU performance of the west he other parameters can simulate the range of rainfall centers and roughly the strong precipitation, but for the southern part of the basin of Yibin surrounding areas of strong rainfall two simulation experiments have failed to forecast precipitation. The simulation of vertical velocity and precipitation center is better. From the TS score, light rain and heavy rain are all precipitation levels inside the average score the highest score, and between the boundary layer parameters of the TS score was significant, boundary layer parameterization selection has great influence on the TS score.
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备注/Memo
收稿日期:2016-09-20 基金项目:国家自然科学基金重点基金资助项目(91337215); 国家重点基础研究发展计划资助项目(2013CB733206,2012CB417202); 中国气象局西南区域气象中心重大科研资助项目(西南区域 014-5); 四川省应用基础研究计划资助项目(2013JY0063)