DOI: 10.1002/joc.5889
Scopus记录号: 2-s2.0-85056282687
论文题名: On bias correction of summer monsoon precipitation over India from CORDEX-SA simulations
作者: Choudhary A. ; Dimri A.P.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
卷: 39, 期: 3 起始页码: 1388
结束页码: 1403
语种: 英语
英文关键词: bias correction
; CORDEX-SA
; empirical quantile mapping
Scopus关键词: Linear transformations
; Mapping
; Bias correction
; Bias-correction methods
; CORDEX-SA
; Interannual variability
; Regional climate
; Regional climate simulation
; Seasonal mean precipitation
; Summer monsoon precipitation
; Mathematical transformations
英文摘要: In the present study, four different bias correction methods are assessed in improving the precipitation output from a set of two regional climate simulations for 1971–2005 period. The simulations come from Coordinated Regional Climate Downscaling Experiment over South Asia (CORDEX-SA). The bias correction methods applied here are linear scaling (Scaling), empirical quantile mapping (EQM), power transformation (PTR) and local intensity scaling (LOCI). All the bias correction techniques show skill in improving the model results, but there are clear differences in the degrees of success depending upon the characteristic of precipitation studies—like seasonal mean, seasonal extremes or inter-annual variability. Most of the methods show equivalently high ability in correcting the seasonal mean precipitation values; however, there also exist residual biases which vary spatially over India. The largest reduction in bias was observed for the frequency of dry days and precipitation on very wet days, which are significantly altered after adjustment by EQM and PTR. It is found that distribution-based EQM method is more skilful followed by PTR and LOCI in most of the cases including correction of frequency-based indices (e.g., dry days number and inter-annual variability). © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116536
Appears in Collections: 全球变化的国际研究计划
There are no files associated with this item.
作者单位: School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India
Recommended Citation:
Choudhary A.,Dimri A.P.. On bias correction of summer monsoon precipitation over India from CORDEX-SA simulations[J]. International Journal of Climatology,2019-01-01,39(3)