Climate Change Research ›› 2022, Vol. 18 ›› Issue (1): 44-57.doi: 10.12006/j.issn.1673-1719.2021.132

• Changes in Climate System • Previous Articles     Next Articles

An assessment on extreme precipitation events in Yangtze River basin as simulated by CWRF regional climate model

SUN Chen1, WANG Fang2,3(), ZHOU Yue-Hua1, LI Lan1   

  1. 1 Wuhan Regional Climate Center, Wuhan 430074, China
    2 National Climate Center/Climate Research Open Laboratory of China Meteorological Administration, Beijing 100081, China
    3 Key Laboratory of Meteorological Disaster, Ministry of Education/Joint International Research Laboratory of Climate and Environment Change/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 210044, China
  • Received:2021-07-14 Revised:2021-10-29 Online:2022-01-30 Published:2021-12-23
  • Contact: WANG Fang


Based on the station observation data from 1980 to 2016, the CWRF model’s ability to simulate area rainfall and extreme precipitation events in the Yangtze River basin was evaluated. The results showed that the CWRF model well reproduced the spatial distribution of precipitation in the Yangtze River basin and the monthly/seasonal variation characteristics of area rainfall in different regions from 1980 to 2016, and the CWRF model performance was better in winter and spring than in summer and autumn. CWRF model had a systematic overestimation on area rainfall in the Yangtze River basin, and the simulation capability for area rainfall in the middle and lower reaches of the Yangtze River was higher than that in the upper reaches and the Jinsha River. This may be due to the inadequate representation of observation area rainfall caused by the complex topography and the scarcity of stations in the upper reaches of the Yangtze River basin and the Jinsha River area, as well as the lack in simulation capabilities of the CWRF model. CWRF model also presented certain capabilities to simulate extreme precipitation events, which could well reflect the wetting trend of the middle and lower reaches of the Yangtze River. Additionally, the weakening trend of extreme precipitation in the upper reaches of the Yangtze River and the increasing trend in the middle and lower reaches of the Yangtze River could be reflected. However, the numerical simulation capability for extreme daily precipitation and precipitation in complex terrain were insufficient.

Key words: CWRF, Yangtze River basin, Area rainfall, Extreme precipitation

Copyright © Climate Change Research, All Rights Reserved.
Tel: (010)58995171 E-mail:
Powered by Beijing Magtech Co. Ltd