DOI: 10.1007/s00382-016-3275-4
Scopus记录号: 2-s2.0-84979220814
论文题名: An evaluation of boreal summer intra-seasonal oscillation simulated by BCC_AGCM2.2
作者: Fang Y. ; Wu P. ; Wu T. ; Wang Z. ; Zhang L. ; Liu X. ; Xin X. ; Huang A.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2017
卷: 48, 期: 2017-09-10 起始页码: 3409
结束页码: 3423
语种: 英语
英文关键词: BCC climate model
; Climate model evaluation
; East Asia summer monsoon
; Intra-seasonal oscillation
英文摘要: The intra-seasonal oscillation (ISO) is a prominent feature of the East Asia summer monsoon. The Beijing Climate Center model is one of the IPCC models participating in the Coupled Model Inter-comparison Project (CMIP) 3 and CMIP5 experiments. This paper presents a systematic evaluation of ISO simulated by the Beijing Climate Center atmospheric general circulation model version 2.2 against observations. The model reasonably simulates some salient features of BSISO in terms of temporal spectrum, leading EOF modes, and vertical structure, however limitations are also evident. The strength of the BSISO is overestimated and the northward propagating rain belt is tilted southwest-northeast, which is also different from the observation. The model tends to produce unrealistically strong but shallow convection associated with the ISO, leading to a northward shift of the Western Pacific Subtropical High and the main rain band compared to observations. Process studies show that the anomalous convective heating associated with the wet model bias drives a Gill-type response, resulting in the northwesterly biased position of Western Pacific Subtropical High. The study has revealed how the interaction of moist processes and large-scale dynamics can lead to model bias in simulating the east Asian regional climate system and its variability (ISO in particular). Future improvements in model resolution and convection parameterization are expected to reduce such errors. © 2016, The Author(s). 资助项目: NSFC, National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53257
Appears in Collections: 过去全球变化的重建
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作者单位: Beijing Climate Center, China Meteorological Administration, Beijing, China; Met Office Hadley Centre, Exeter, United Kingdom; School of Atmospheric Sciences, Nanjing University, Nanjing, China
Recommended Citation:
Fang Y.,Wu P.,Wu T.,et al. An evaluation of boreal summer intra-seasonal oscillation simulated by BCC_AGCM2.2[J]. Climate Dynamics,2017-01-01,48(2017-09-10)