globalchange  > 气候减缓与适应
DOI: 10.1007/s00382-019-04729-w
WOS记录号: WOS:000483626900065
论文题名:
A new two-stage multivariate quantile mapping method for bias correcting climate model outputs
作者: Guo, Qiang1; Chen, Jie1; Zhang, Xunchang2; Shen, Mingxi1; Chen, Hua1; Guo, Shenglian1
通讯作者: Chen, Jie
刊名: CLIMATE DYNAMICS
ISSN: 0930-7575
EISSN: 1432-0894
出版年: 2019
卷: 53, 期:5-6, 页码:3603-3623
语种: 英语
英文关键词: Bias correction ; Inter-variable correlation ; Statistical downscaling ; Climate change ; Global climate model
WOS关键词: WEATHER GENERATOR ; PRECIPITATION ; TEMPERATURE ; IMPACT ; SIMULATIONS ; CMIP5 ; FRAMEWORK ; SHUFFLE ; RUNOFF
WOS学科分类: Meteorology & Atmospheric Sciences
WOS研究方向: Meteorology & Atmospheric Sciences
英文摘要:

Bias correction is an essential technique to correct climate model outputs for local or site-specific climate change impact studies. Most commonly used bias correction methods operate on a single variable, which ignores dependency among multiple variables. The misrepresentation of multivariable dependence may result in biased assessment of climate change impacts. To solve this problem, a new multivariate bias correction method referred to as two-stage quantile mapping (TSQM) is proposed by combining a single-variable bias correction method with a distribution-free shuffle approach. Specifically, a quantile mapping method is used to correct the marginal distribution of single variable and then a distribution-free shuffle approach to introduce proper multivariable correlations. The proposed method is compared with the other four state-of-the-art multivariate bias correction methods for correcting monthly precipitation, and maximum and minimum temperatures simulated by global climate models. The results show that the TSQM method is capable of both bias correcting univariate statistics and inducing proper inter-variable rank correlations. Especially, it outperforms all the other four methods in reproducing inter-variable rank correlations and in simulating mean temperature and potential evaporation for wet and dry months of the validation period. Overall, without complex algorithm and iterations, TSQM is fast, simple and easy to implement, and is proved a competitive bias correction technique to be widely applied in climate change impact studies.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/125501
Appears in Collections:气候减缓与适应

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作者单位: 1.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Hubei, Peoples R China
2.USDA ARS, Grazinglands Res Lab, 7207 West Cheyenne St, El Reno, OK 73036 USA

Recommended Citation:
Guo, Qiang,Chen, Jie,Zhang, Xunchang,et al. A new two-stage multivariate quantile mapping method for bias correcting climate model outputs[J]. CLIMATE DYNAMICS,2019-01-01,53(5-6):3603-3623
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