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DOI: 10.1002/joc.6028
Scopus ID: 2-s2.0-85062728517
Title:
Evaluation of the effects of a multiphysics ensemble on the simulation of an extremely hot summer in 2003 over the CORDEX-EA-II region
Author: Yang L.; Wang S.; Tang J.; Niu X.; Fu C.
Source Publication: International Journal of Climatology
ISSN: 8998418
Indexed By: SCI ; SCI-E ; EI
Publishing Year: 2019
Language: 英语
Keyword: CORDEX-EA-II domain ; extremes ; physical schemes ; precipitation ; temperature
Scopus Keyword: Climate models ; Clouds ; Land surface temperature ; Precipitation (chemical) ; Rain ; Surface measurement ; Temperature ; Atmospheric interaction ; CORDEX-EA-II domain ; Cumulus parameterization ; Extreme precipitation ; extremes ; Large-scale circulation ; physical schemes ; Weather research and forecasting models ; Weather forecasting
English Abstract: In this paper, we evaluate a 48-member multiphysics ensemble using the Weather Research and Forecasting (WRF) model for the JJA extreme precipitation and temperature in 2003 over the CORDEX-EA-II domain. The simulated precipitation and temperature are reasonable in the subregions controlled by a large-scale circulation, yet the biases for both precipitation and temperature are evident over the subregions where the effects of mesoscale processes are important. The performance of various combinations of WRF physical schemes for simulating the JJA precipitation is dependent on the region. Meanwhile, the cumulus and microphysical schemes have substantial influences on the simulation of precipitation, and the land surface models and cumulus schemes play crucial roles in the surface temperature. Our analysis shows that the combination of Noah for the land surface process, Lin for the microphysics, G3D for the cumulus parameterization, and CAM for the radiation scheme can provide the most reliable reproduction of both precipitation and temperature extremes over China. Ensemble analysis shows that the simulated climate extremes are usually accompanied by a large ensemble spread, implying sensitivities to the model physical processes in some subregions. The simulated wind fields at low-to-middle atmospheric levels display responses to the options of the land surface models and cumulus schemes. The essential impact of the land–atmospheric interaction on simulating the extremes can be largely attributed to the active convective processes. WRF has difficulties in reproducing the observed temporal evolution of the rainfall process, which consists of continuous large rainfall episodes in the observation data set during the simulation period. © 2019 Royal Meteorological Society
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Document Type: 期刊论文
Identifier: http://119.78.100.177/globalchange/handle/2HF3EXSE/116598
Appears in Collections:全球变化的国际研究计划

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Affiliation: CMA-NJU Joint Laboratory for Climate Prediction Studies, Institute for Climate and Global Change Research, School of Atmospheric Sciences, Nanjing University, Nanjing, China

Recommended Citation:
Yang L.,Wang S.,Tang J.,et al. Evaluation of the effects of a multiphysics ensemble on the simulation of an extremely hot summer in 2003 over the CORDEX-EA-II region[J]. International Journal of Climatology,2019-01-01
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