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DOI | 10.1175/JAMC-D-18-0089.1 |
Gaussian Copula Method for Bias Correction of Daily Precipitation Generated by a Dynamical Model | |
Kim, Moosup; Yhang, Yoo-Bin; Lim, Chang-Mook | |
发表日期 | 2019 |
ISSN | 1558-8424 |
EISSN | 1558-8432 |
卷号 | 58期号:2页码:269-289 |
英文摘要 | The daily precipitation data generated by dynamical models, including regional climate models, generally suffer from biases in distribution and spatial dependence. These are serious flaws if the data are intended to be applied to hydrometeorological studies. This paper proposes a scheme for correcting the biases in both aspects simultaneously. The proposed scheme consists of two steps: an aggregation step and a disaggregation step. The first one aims to obtain a smoothed precipitation pattern that must be retained in correcting the bias, and the second aims to make up for the deficient spatial variation of the smoothed pattern. In both steps, the Gaussian copula plays important roles since it not only provides a feasible way to correct the spatial correlation of model simulations but also can be extended for large-dimension cases by imposing a covariance function on its correlation structure. The proposed scheme is applied to the daily precipitation data generated by a regional climate model. We can verify that the biases are satisfactorily corrected by examining several statistics of the corrected data. |
WOS研究方向 | Meteorology & Atmospheric Sciences |
来源期刊 | JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/92894 |
作者单位 | APEC Climate Ctr, Busan, South Korea |
推荐引用方式 GB/T 7714 | Kim, Moosup,Yhang, Yoo-Bin,Lim, Chang-Mook. Gaussian Copula Method for Bias Correction of Daily Precipitation Generated by a Dynamical Model[J],2019,58(2):269-289. |
APA | Kim, Moosup,Yhang, Yoo-Bin,&Lim, Chang-Mook.(2019).Gaussian Copula Method for Bias Correction of Daily Precipitation Generated by a Dynamical Model.JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY,58(2),269-289. |
MLA | Kim, Moosup,et al."Gaussian Copula Method for Bias Correction of Daily Precipitation Generated by a Dynamical Model".JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY 58.2(2019):269-289. |
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