SST-Forced and Internal Variability of a Winter Wave Train over the Tropical Indo-Western Pacific and East Asia

doi:10.3390/atmos10030129

IOCAS-IR > 海洋环流与波动重点实验室

	SST-Forced and Internal Variability of a Winter Wave Train over the Tropical Indo-Western Pacific and East Asia
	Zheng, Jian1,2,3 ; Liu, Qinyu 4; Chen, Zesheng 5; Wang, Faming 1,2,3
	2019-03-08
发表期刊	ATMOSPHERE
ISSN	2073-4433
卷号	10 期号:3 页码:15
通讯作者	Zheng, Jian([email protected])
摘要	Previous studies have indicated that a high-level wave train from the tropical Indo-Western Pacific to East Asia (IWP-EA, expressed as geopotential height at 200 hPa) is triggered by dipolar convective activity anomalies over the IWP during the boreal winter. The current study highlights the relative importance of sea surface temperature forcing versus atmospheric internal variability on the IWP-EA pattern, based on an Atmospheric Model Intercomparison Project (AMIP) experiment with 30 integrations. It was found that the SST-forcing component can reproduce the observed IWP-EA pattern and the related rainfall dipole well, for both the spatial features and temporal evolutions. The internal variability of the rainfall dipole is strong in the southern and eastern Indian Ocean and region north of Australia, while the internal variability of height generally increases with latitude. The signal-to-noise ratios are just over 1 over the northernmost lobe of the IWP-EA (Japan and the region to its east), while ratios over the other centers reach values greater than 3. An inter-member EOF analysis of the rainfall dipole indicates that the variability associated with the first two modes can explain more than 70% of the total spread over most regions with large spread for both rainfall dipole and IWP-EA, including the region over Japan. Thus, some parts of internal variability of rainfall dipole and IWP-EA are connected.
关键词	wave train sea surface temperature internal variability
DOI	10.3390/atmos10030129
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of China[41606018]###1577; Natural Science Foundation of China[41776035]###1578; State Key Laboratory of Tropical Oceanography, the South China Sea Institute of Oceanology, the Chinese Academy of Sciences[LTO1708]###2523; Funds for Creative Research Groups of China[41421005]###1579; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1406402]###370; Natural Science Foundation of China[41606018]; Natural Science Foundation of China[41776035]; State Key Laboratory of Tropical Oceanography, the South China Sea Institute of Oceanology, the Chinese Academy of Sciences[LTO1708]; Funds for Creative Research Groups of China[41421005]; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1406402]
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000464174800003
出版者	MDPI
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/161135
专题	海洋环流与波动重点实验室
通讯作者	Zheng, Jian
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Wave, Qingdao 266071, Shandong, Peoples R China 2.Chinese Acad Sci, Pilot Natl Lab forMarine Sci & Technol Qingdao, Qingdao 266071, Shandong, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Shandong, Peoples R China 4.Ocean Univ China, Key Lab Ocean Atmosphere Interact & Climate Univ, Phys Oceanog Lab, Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Qingdao 266100, Shandong, Peoples R China 5.Chinese Acad Sci, State Key Lab Trop Oceanog, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Zheng, Jian,Liu, Qinyu,Chen, Zesheng,et al. SST-Forced and Internal Variability of a Winter Wave Train over the Tropical Indo-Western Pacific and East Asia[J]. ATMOSPHERE,2019,10(3):15.
APA	Zheng, Jian,Liu, Qinyu,Chen, Zesheng,&Wang, Faming.(2019).SST-Forced and Internal Variability of a Winter Wave Train over the Tropical Indo-Western Pacific and East Asia.ATMOSPHERE,10(3),15.
MLA	Zheng, Jian,et al."SST-Forced and Internal Variability of a Winter Wave Train over the Tropical Indo-Western Pacific and East Asia".ATMOSPHERE 10.3(2019):15.

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