大气科学2017，Vol.41Issue(6)：1156-1166,11.DOI:10.3878/j.issn.1006-9895.1704.16275
基于RegCM4模式的中国区域日尺度降水模拟误差订正
Bias Correction of Daffy Precipitation Simulated by RegCM4 Model over China
摘要
Abstract
There are biases in climate model simulations compared to the observations,which makes it hard to directly use model simulations to drive the impact models.In the present study,the authors try to correct biases in daily precipitation simulated by a regional climate model (RegCM4.4) based on probability distribution (Quantile-Mapping) over China.Transfer functions are established from the reference period 1991-2000,and then applied to the period 2001-2010 to validate the performance of the method.Six different methods using parametric or nonparametric transformations are employed and compared to observations.Results show that all the six methods can effectively reduce the biases of the precipitation simulated,the RQUANT (Non-parametric quantile mapping using robust empirical quantiles) is found to perform better than other methods.Further analysis shows that RQUANT can significantly improve the simulation of the mean precipitation and the interannual variability and extreme events.关键词
区域气候模式/逐日降水/误差订正/传递函数Key words
Regional climate model/Daily precipitation/Bias correction/Transfer function分类
天文与地球科学引用本文复制引用
童尧,高学杰,韩振宇,徐影..基于RegCM4模式的中国区域日尺度降水模拟误差订正[J].大气科学,2017,41(6):1156-1166,11.基金项目
国家重点研发计划2016YFC0402405,公益性行业(气象)科研专项GYHY201306019,中国气象局气候变化专项项目CCSF201626 National Key Research and Development Program of China (Grant 2016YFC0402405),Special Scientific Research Fund of Meteorological Public Welfare Profession of China (Grant GYHY201306019),Climate Change Specific Fund of China (Grant CCSF201626) （气象）
