Scopus记录号: 2-s2.0-85043471736
论文题名: Spatiotemporal characteristics of heat waves over China in regional climate simulations within the CORDEX-EA project
作者: Wang P. ; Tang J. ; Sun X. ; Liu J. ; Juan F.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2019
卷: 52, 期: 2019-01-02 起始页码: 799
结束页码: 818
语种: 英语
英文关键词: CORDEX East Asia
; Heat waves
; Spectral nudging
; Weather Research and Forecasting (WRF) model
英文摘要: Using the Weather Research and Forecasting (WRF) model, this paper analyzes the spatiotemporal features of heat waves in 20-year regional climate simulations over East Asia, and investigates the capability of WRF to reproduce observational heat waves in China. Within the framework of the Coordinated Regional Climate Downscaling Experiment (CORDEX), the WRF model is driven by the ERA-Interim (ERAIN) reanalysis, and five continuous simulations are conducted from 1989 to 2008. Of these, four runs apply the interior spectral nudging (SN) technique with different wavenumbers, nudging variables and nudging coefficients. Model validations show that WRF can reasonably reproduce the spatiotemporal features of heat waves in China. Compared with the experiment without SN, the application of SN is effectie on improving the skill of the model in simulating both the spatial distributions and temporal variations of heat waves of different intensities. The WRF model shows advantages in reproducing the synoptic circulations with SN and therefore yields better representations for heat wave events. Besides, the SN method is able to preserve the variability of large-scale circulations quite well, which in turn adjusts the extreme temperature variability towards the observation. Among the four SN experiments, those with stronger nudging coefficients perform better in modulating both the spatial and temporal features of heat waves. In contrast, smaller nudging coefficients weaken the effects of SN on improving WRF’s performances. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature. 资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122463
Appears in Collections: 气候变化事实与影响
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作者单位: School of Atmospheric Sciences, Nanjing University, 163 Xianlin Road, Nanjing, 210023, China; Key Laboratory of Mesoscale Severe Weather/Ministry of Education, Nanjing University, Nanjing, 210023, China; CMA-NJU Joint Laboratory for Climate Prediction Studies, Institute for Climate and Global Change Research, Nanjing University, Nanjing, 210023, China; Ningbo Meteorological Observatory, Ningbo, 315012, China
Recommended Citation:
Wang P.,Tang J.,Sun X.,et al. Spatiotemporal characteristics of heat waves over China in regional climate simulations within the CORDEX-EA project[J]. Climate Dynamics,2019-01-01,52(2019-01-02)