[1]郝莹,王皓,刘杰,等.多模式多分辨率面雨量预报在淮河流域的性能评估[J].气象研究与应用,2019,40(01):24-28.
 Hao Ying,Wang Hao,Liu Jie,et al.Performance Evaluation of Multi-Model and Multi-Resolution Area Rainfall Forecast in Huaihe River Basin[J].Journal of Meteorological Research and Application,2019,40(01):24-28.
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多模式多分辨率面雨量预报在淮河流域的性能评估()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第40卷
期数:
2019年01期
页码:
24-28
栏目:
天气气候
出版日期:
2019-04-05

文章信息/Info

Title:
Performance Evaluation of Multi-Model and Multi-Resolution Area Rainfall Forecast in Huaihe River Basin
作者:
郝莹12 王皓2 刘杰1 邱学兴2
1. 淮河流域气象中心 合肥 230031;
2. 安徽省气象台 合肥 230031
Author(s):
Hao Ying12 Wang Hao2 Liu Jie1 Qiu Xuexing2
1. Huaihe River Basin Meteorological Center, Hefei Anhui 230031;
2. Anhui Meteorological Observatory, Hefei, Anhui 230031
关键词:
多模式面雨量预报性能评估
Keywords:
multi-modelarea rainfall forecastperformance evaluation
分类号:
P338+.8
摘要:
利用2015~2017年淮河流域汛期ECMWF(空间分辨率0.125°x0.125°)、JMA(空间分辨率0.5°x0.5°)、WRF(空间分辨率0.1°x0.1°)6h、12h、24h时间分辨率的降水预报产品计算淮河流域面雨量预报,对比评估各预报时效的绝对误差、相对误差、晴雨正确率及各量级面雨量预报的TS评分。结论如下:(1)0~72h预报时效,EC的绝对误差最小、WRF居中,JMA最大。(2)三个模式的晴雨正确率随着时效的增加缓慢下降,但都维持较高水平。(3)EC和JMA的面雨量预报存在系统性高估。(4)WRF在对短历时强降水的预报性能优于其他两个模式。(5)各模式的面雨量预报性能存在日变化,且随着降水强度的增大,日变化特征更加显著,对午后到傍晚的暴雨预报准确率明显低于其他时间段。
Abstract:
In order to improve the forecasting ability of numerical forecasting model in Huaihe River Basin and better play the role of precipitation forecast in decision support of flood control dispatch, this paper calculates the area rainfall in the sub-basins of Huaihe River Basin by using 6h, 12h and 24h temporal resolution precipitation forecast of ECMWF (spatial resolution 0.125°), JMA (spatial resolution 0.5°),and WRF (spatial resolution 0.1°) in flood season of Huaihe River Basin from 2015 to 2017. In addition, the absolute error, relative error, accuracy of sunshine and rain, and the TS scores of area rainfall prediction in each magnitude are compared and evaluated.The conclusions are as follows:(1) The absolute error of EC is the smallest, WRF is the middle and JMA is the largest in the 0-72 h forecast time.(2) The accuracy of the three models decreases slowly with the increase of time, but they all maintain a high accuracy.(3) Systematic overestimation exists in EC and JMA area rainfall forecasting. (4) WRF is superior to the other two models in predicting short-duration heavy rainfall.(5) There are diurnal variations in the area rainfall prediction performance of each model, which is more significant with the increase of precipitation intensity. Besides, the accuracy rate from afternoon to evening is significantly lower than that of other periods.

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备注/Memo

备注/Memo:
收稿日期:2018-12-3。
基金项目:中国气象局预报员专项CMAYBY2018-032资助。
作者简介:郝莹(1982-),女,高级工程师,主要从事水文气象方面研究。
更新日期/Last Update: 1900-01-01