DOI: 10.1007/s00382-013-1934-2
Scopus记录号: 2-s2.0-84884702891
论文题名: Variability of the Indian Ocean SST and its possible impact on summer western North Pacific anticyclone in the NCEP Climate Forecast System
作者: Jiang X. ; Yang S. ; Li J. ; Li Y. ; Hu H. ; Lian Y.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2013
卷: 41, 期: 2017-07-08 起始页码: 2199
结束页码: 2212
语种: 英语
英文关键词: Anticyclonic circulation over the western North Pacific
; Indian Ocean
; NCEP Climate Forecast System
英文摘要: The NCEP Climate Forecast System version 2 (CFSv2) provides important source of information about the seasonal prediction of climate over the Indo-Pacific oceans. In this study, the authors provide a comprehensive assessment of the prediction of sea surface temperature (SST) in the tropical Indian Ocean (IO). They also investigate the impact of tropical IO SST on the summer anomalous anticyclonic circulation over the western North Pacific (WNPAC), focusing on the relative contributions of local SST and remote forcing of tropical IO SST to WNPAC variations. The CFSv2 captures the two most dominant modes of summer tropical IO SST: the IO basin warming (IOBW) mode and the IO dipole (IOD) mode, as well as their relationship with El Niño-Southern Oscillation (ENSO). However, it produces a cold SST bias in IO, which may be attributed to deeper-than-observed mixed layer and smaller-than-observed total downward heat flux in the tropical IO. It also overestimates the correlations of ENSO with IOBW and IOD, but underestimates the magnitude of IOD and summer IOBW. The CFSv2 captures the climate anomalies related to IOBW but not those related to IOD. It depicts the impact of summer IOBW on WNPAC via the equatorial Kelvin wave, which contributes to the maintenance of WNPAC in July and August. The WNPAC in June is mostly forced by local cold SST, which is better predicted by the CFSv2 compared to July and August. The mechanism for WNPAC maintenance may vary with lead time in the CFSv2. © 2013 Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54775
Appears in Collections: 过去全球变化的重建
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作者单位: Institute of Plateau Meteorology, China Meteorological Administration, Chengdu, Sichuan, China; Department of Atmospheric Sciences, Sun Yat-sen University, Guangzhou, 510275 Guangdong, China; National Key Laboratory of Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Institute of Meteorological Sciences of Jilin Province, Changchun, Jilin, China
Recommended Citation:
Jiang X.,Yang S.,Li J.,et al. Variability of the Indian Ocean SST and its possible impact on summer western North Pacific anticyclone in the NCEP Climate Forecast System[J]. Climate Dynamics,2013-01-01,41(2017-07-08)