DOI: 10.1002/joc.5706
论文题名: Effects of spectral nudging on precipitation extremes and diurnal cycle over CORDEX-East Asia domain
作者: Tang J. ; Sun X. ; Hui P. ; Li Y. ; Zhang Q. ; Liu J.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 13 起始页码: 4903
结束页码: 4923
语种: 英语
英文关键词: CORDEX-East Asia
; diurnal cycle
; precipitation extremes
; spectral nudging
Scopus关键词: Climate models
; Diurnal cycle
; East Asia
; Precipitation extremes
; Precipitation frequency
; Regional climate
; Spectral nudging
; Wave numbers
; Weather research and forecasting models
; Weather forecasting
; climatology
; diurnal variation
; experimental study
; extreme event
; precipitation (climatology)
; regional climate
; spectral analysis
; weather forecasting
; China
; Indochina
英文摘要: In this study, by using the Weather Research and Forecasting (WRF) model, the impact of spectral nudging (SN) on simulating the precipitation extremes and diurnal cycle of precipitation over Coordinated Regional Climate Downscaling Experiment-East Asia (CORDEX-EA) domain is evaluated. The simulations are conducted during 1989–2007 driven by the ERA-Interim reanalysis data with different SN experiments. It is clear that WRF has the ability to reproduce the long-term climatology as well as the extremes over Asia, while biases are generated in the experiment without SN (NOSN). The simulations with SN, especially SN6 (SN with wavenumber 6) and SN3-UVT (SN with wavenumber 3 applied to wind and temperature), can efficiently improve the model's skill by reducing the biases of precipitation frequency and intensity as well as the extreme indices except for the consecutive dry days (CDD). The diurnal harmonics of precipitation frequency and amount are well produced by WRF, and the SN experiments also perform better than the NOSN experiment, with SN3-UVT showing the best skill. However, the SN only with winds shows little improvement in simulating the diurnal cycles, and the additional nudging of temperature can improve the simulation only over south China and Indo-China. It can be concluded that the strength of nudging parameters can significantly affect the simulation of precipitation, with better performance under the stronger nudging. Moreover, additional nudging of temperature can also improve the simulation. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116760
Appears in Collections: 气候减缓与适应
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作者单位: CMA-NJU Joint Laboratory for Climate Prediction Studies, Institute for Climate and Global Change Research, School of Atmospheric Sciences, Nanjing University, Nanjing, China; Jiangsu Climate Center, Jiangsu Provincial Meteorological Bureau, Nanjing, China; School of Atmospheric Sciences, Nanjing University of Information Sciences and Technology, Nanjing, China; Ningbo Meteorological Observatory, Ningbo Meteorological Bureau, Ningbo, China
Recommended Citation:
Tang J.,Sun X.,Hui P.,et al. Effects of spectral nudging on precipitation extremes and diurnal cycle over CORDEX-East Asia domain[J]. International Journal of Climatology,2018-01-01,38(13)