气候变化领域集成服务门户(CCPortal): Bias correction of temperature and precipitation over China for RCM simulations using the QM and QDM methods

CCPortal

DOI	10.1007/s00382-020-05447-4
	Bias correction of temperature and precipitation over China for RCM simulations using the QM and QDM methods
	Tong Y.; Gao X.; Han Z.; Xu Y.; Xu Y.; Giorgi F.
发表日期	2020
ISSN	0930-7575
英文摘要	Two different bias correction methods, the quantile mapping (QM) and quantile delta mapping (QDM), are applied to simulated daily temperature and precipitation over China from a set of 21st century regional climate model (the ICTP RegCM4) projections. The RegCM4 is driven by five different general circulation models (GCMs) under the representative concentration pathway RCP4.5 at a grid spacing of 25 km using the CORDEX East Asia domain. The focus is on mean temperature and precipitation in December–January–February (DJF) and June–July–August (JJA). The impacts of the two methods on the present day biases and future change signals are investigated. Results show that both the QM and QDM methods are effective in removing the systematic model biases during the validation period. For the future changes, the QDM preserves the temperature change signals well, in both magnitude and spatial distribution, while the QM artificially modifies the change signal by decreasing the warming and modifying the patterns of change. For precipitation, both methods preserve the change signals well but they produce greater magnitude of the projected increase, especially the QDM. We also show that the effects of bias correction are variable- and season-dependent. Our results show that different bias correction methods can affect in different way the simulated change signals, and therefore care has to be taken in carrying out the bias correction process. © 2020, The Author(s).
英文关键词	Bias correction; China; Quantile delta mapping; Regional climate model
语种	英语
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145707
作者单位	Climate Change Research Center, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Yingkou Meteorological Bureau, Yingkou, China; National Climate Center, China Meteorological Administration, Beijing, China; The Abdus Salam International Center for Theoretical Physics, Trieste, Italy
推荐引用方式 GB/T 7714	Tong Y.,Gao X.,Han Z.,et al. Bias correction of temperature and precipitation over China for RCM simulations using the QM and QDM methods[J],2020.
APA	Tong Y.,Gao X.,Han Z.,Xu Y.,Xu Y.,&Giorgi F..(2020).Bias correction of temperature and precipitation over China for RCM simulations using the QM and QDM methods.Climate Dynamics.
MLA	Tong Y.,et al."Bias correction of temperature and precipitation over China for RCM simulations using the QM and QDM methods".Climate Dynamics (2020).