热带气象学报2012，Vol.28Issue(2)：167-176,10.DOI:10.3969/j.issn.1004-4965.2012.02.003
不同分辨率对淮河流域连续暴雨过程影响的中尺度模拟试验
MESOSCALE SIMULATION OF A HEAVY RAINFALL IN THE HUAIHE RIVER VALLEY IN JULY 2003: EFFECTS OF DIFFERENT HORIZONTAL RESOLUTIONS
摘要
Abstract
Numerical simulation experiments have been conducted with the Weather Research and Forecast (WRF) model with different horizontal resolutions and physical parameterization schemes to investigate the effects of resolution on the model performances in reproducing a abnormally prolonged heavy rainfall process in the Huaihe river valley in early July 2003 (1st-11th). This paper focuses on the resolution impact on the simulation results. The comparisons between the model results with different resolutions (45 km, 30 km, 20 km and 10 km) and observations have indicated that the model has a basic and reasonable reproduction of the rainfall belt, the circulation characteristics over different periods, as well as the regional mean variables. The performance of rainfall simulation improves significantly with increased horizontal resolution, but that of circulation modeling is not affected as much. The errors of modeled wind in the model low levels all have the characteristics of fluctuation and propagate to the upper lever at the same time.关键词
WRF模式/连续暴雨/分辨率/淮河流域Key words
WRF model/ heavy rainfall/ horizontal resolution/ Huaihe River valley分类
天文与地球科学引用本文复制引用
邓莲堂,史学丽,闫之辉..不同分辨率对淮河流域连续暴雨过程影响的中尺度模拟试验[J].热带气象学报,2012,28(2):167-176,10.基金项目
国家自然科学基金《我国梅雨锋暴雨物理结构的分析与模拟》课题(40875064)资助 （40875064）
