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DOI: 10.1002/joc.5840
Scopus ID: 2-s2.0-85052924484
Title:
Simulation of interannual variability of summer rainfall over the Tibetan Plateau by the Weather Research and Forecasting model
Author: Jiang X.; Wu Y.; Li Y.; Shu J.
Source Publication: International Journal of Climatology
ISSN: 8998418
Indexed By: SCI ; SCI-E ; EI
Publishing Year: 2019
Volume: 39, Issue:2
pages begin: 756
pages end: 767
Language: 英语
Keyword: interannual variability ; rainfall ; Tibetan Plateau ; WRF
Scopus Keyword: Climate models ; Clouds ; Weather forecasting ; Global climate model ; Horizontal resolution ; Interannual variability ; Large-scale circulation ; Realistic simulation ; Simulated rainfall ; Tibetan Plateau ; Weather research and forecasting models ; Rain ; annual variation ; climate modeling ; computer simulation ; cumulus ; rainfall ; spatial resolution ; summer ; weather forecasting ; China ; Qinghai-Xizang Plateau
English Abstract: A realistic simulation of rainfall over the Tibetan Plateau (TP) is a big challenge for both regional and global climate models. In this study, we investigate the simulations of summer rainfall over the TP from 1979 to 2010 by the Weather Research and Forecasting (WRF) model with various horizontal resolutions and cumulus schemes, with a focus on the difference in the model's skill in simulating interannual variability of rainfall between early and high summer. The WRF captures spatial pattern of climatological summer mean rainfall over the TP. However, it produces apparent wet bias, especially in southern and eastern edges of the TP. Despite this climatological bias, WRF skilfully reproduces the interannual variability of summer rainfall over the southeastern TP, where maximum rainfall is located. An increase in horizontal resolution or an appropriate cumulus scheme mostly improves the simulation of climatological mean rainfall. However, the phase of interannual variability of simulated rainfall is not sensitive to horizontal resolution and cumulus scheme. Instead, it is sensitive to mechanisms responsible for interannual variability of rainfall. WRF has a high skill in simulating the interannual variability of rainfall over the southeastern TP in July and August, but a low skill in June. The WRF's high skill is attributed to that the interannual variability of July–August rainfall is largely driven by large-scale circulation, while its low skill for June rainfall may be ascribed to the overestimation of snow and its relationship with rainfall. © 2018 Royal Meteorological Society
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Document Type: 期刊论文
Identifier: http://119.78.100.177/globalchange/handle/2HF3EXSE/116588
Appears in Collections:全球变化的国际研究计划

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Affiliation: Institute of Plateau Meteorology, China Meteorological Administration, Chengdu, Sichuan, China; Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province, Chengdu, Sichuan, China; Chongqing Climate Center, Chongqing, China

Recommended Citation:
Jiang X.,Wu Y.,Li Y.,et al. Simulation of interannual variability of summer rainfall over the Tibetan Plateau by the Weather Research and Forecasting model[J]. International Journal of Climatology,2019-01-01,39(2)
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