| LAPS在冰雹云模拟中的应用 |
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| 引用本文： | 向玉春,杨军,唐仁茂,付丹红,李德俊,彭菊香.LAPS在冰雹云模拟中的应用[J].应用气象学报,2012,23(3):331-339. |
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| 作者姓名： | 向玉春 杨军 唐仁茂 付丹红 李德俊 彭菊香 |
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| 作者单位： | 1.湖北省人工影响天气办公室，武汉 430074 |
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| 基金项目： | 华中区域气象中心科技发展基金重点项目（QY 201008） |
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| 摘 要： | LAPS是中国气象局武汉暴雨研究所引进的中尺度分析系统，能融合区域内多种非常规观测资料，提供高分辨率中尺度分析场。该文对探空资料和LAPS分析场两种初始场的大气层结和环境风场信息进行了比较，并应用探空资料和不同时次的降雹点的LAPS分析场作为三维对流云模式的初始场对2008年7月27日、28日湖北西部山区冰雹天气过程进行数值模拟，并将模拟结果与观测实况进行了对比分析，最后对27日降雹过程应用临近降雹时次的LAPS分析场作为云模式初始场模拟的回波、风场和垂直速度等特征进行了分析，以探讨LAPS用于云数值模式的适用性、优越性以及冰雹云发生发展特点。结果表明: LAPS输出场用于云模式初始场进行冰雹云数值模拟具有时空上的优势，能更好地模拟出午后局地降雹，可以弥补探空资料作为云模式初始场的不足，应用临近时次的LAPS分析场作为云模式初始场的数值模拟能体现出冰雹云发展过程中多次增强等细节，有利于人工防雹作业预警和催化方案的确定。
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| 关 键 词： | LAPS 云模式 冰雹 初始场 |
| 收稿时间： | 2011-08-26 |
| 修稿时间： | 2/4/2012 12:00:00 AM |
The Application of LAPS to Hail Cloud Simulation |
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| Xiang Yuchun,Yang Jun,Tang Renmao,Fu Danhong,Li Dejun and Peng Juxiang.The Application of LAPS to Hail Cloud Simulation[J].Quarterly Journal of Applied Meteorology,2012,23(3):331-339. |
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| Authors: | Xiang Yuchun Yang Jun Tang Renmao Fu Danhong Li Dejun and Peng Juxiang |
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| Institution: | 1.Weather Modification of Hubei Province, Wuhan 4300742.Nanjing University of Information Science & Technology, Nanjing 2100443.Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 1000294.Wuhan Institute of Heavy Rain, CMA, Wuhan 430074 |
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| Abstract: | Local Analysis and Prediction System(LAPS) introduced and localized by Wuhan Institute of Heavy Rain integrates a variety of observations in central China and provides rich information on high-resolution meso-scale analysis field.Several hail weather processes occurred in mountainous region of western Hubei on 27 and 28 July in 2008 are analyzed based on LAPS data.And the hailstorm cloud is simulated with the three-dimensional convective cloud model which is initiated with the output of LAPS and the sounding. The difference between dew point and air temperature of sounding data and LAPS data at 0800 BT 27 July 2008 shows the humidity is higher above the hail location.According to LAPS data from 0800 BT to 1600 BT at the hail location,the temperature profiles show that there is cold air inflow in the upper air, and the differences between dew point and air temperature demonstrate that the humidity increases near the ground and then decreases with the altitude,while increases again in the upper air.LAPS data show the stratification status and wind field over the hail point is more and more favorable for hail formation,reflecting more realistic information than the sounding data at 0800 BT. The simulation results initiated with LAPS data and sounding data at 0800 BT 27 July 2008 are very close,but on 28 July the simulated echo intensity,vertical airflow speed,max wind speed and the amount of hail by LAPS data of the hail location are greater than that by sounding data.The simulation results initiated with LAPS data at 1600 BT 27 July and 1600 BT 28 July in 2008 near the hail time are larger than that at 0800 BT and the simulated amount of accumulated hail by LAPS data at 1600 BT is closer to the observation. It can be concluded that the simulation initiated with LAPS data near the hail time can better reflect the occurrence and development of the hail cloud which occurs in the afternoon.The simulated results of cloud maintenance time,hail intensity and distribution,hail size are consistent with the observation, which can provide a reference for local hail forecast.Results show that the output of LAPS can provide higher temporal and spatial resolution data for the three-dimensional convective cloud model than the sounding observations. The three-dimensional convective cloud model initiated with LAPS data near the hail occurrence time performs well in reproducing characteristics of the occurrence and development of hail cloud.Moreover,it can capture certain details such as several increment processes which are in agreement with the radar obser- vations.Therefore,the model may contribute to warning condition for hail suppression operation and see- ding scheme. |
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| Keywords: | LAPS cloud model hail initial field |
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