DECADAL VARIABILITY OF SUBSURFACE OCEAN TEMPERATURE ANOMALY IN TROPICAL PACIFIC AND ITS IMPACT ON CLIMATE OF CHINA

IOCAS-IR > 海洋环流与波动重点实验室

	DECADAL VARIABILITY OF SUBSURFACE OCEAN TEMPERATURE ANOMALY IN TROPICAL PACIFIC AND ITS IMPACT ON CLIMATE OF CHINA
	Chen Yong-li ; Zhao Yong-ping ; Wang Fan; Feng Jun-qiao
	2013-09-01
发表期刊	JOURNAL OF TROPICAL METEOROLOGY
ISSN	1006-8775
卷号	19 期号:3 页码:253-263
文章类型	Article
摘要	In this study, we investigate the decadal variability of subsurface ocean temperature anomaly (SOTA) in the tropical Pacific and associated anomalous atmospheric circulation over Asia-North Pacific-North America by analyzing 50 years of atmosphere-ocean data from the National Center for Environmental Prediction (NCEP) reanalysis project and Simple Ocean Data Assimilation (SODA). Relationship between the ENSO-Like variability and climate of China is also revealed. The results show that the decadal variability of tropical Pacific SOTA has two dominant ENSO-like modes: the primary mode is an ENSO-Like mature phase pattern, and the second mode is associated with the ENSO-like transition (developing or decaying) phase. These two modes consist of a cycle of ENSO-Like variability, which exhibits a quasi-40a fluctuation, superimposed with an oscillation of a 13a period. The ENSO-Like variability in the tropical Pacific influences the atmosphere system at the mid- and higher-latitudes and subtropical regions, resulting in decadal variability of south wind over North China, the East Asian monsoon and climate of China. During the mature phase of El Nino-Like variability, the anomalous north wind prevails over the north part of China and the East Asian monsoon weakens, with little rain in North China but much rain in the middle- and lower-reaches of the Yangtze River. With El Nino-Like decaying (La Nina-Like developing), anomalous northerly wind also prevails over North China, then the East Asian monsoon weakens with drought occurring in North China. The situation during the La Nina-Like variability is the opposite. The pattern of anomalous climate of China is primarily dominated by the first ENSO-like variability, while the second mode can modulate the contribution of the first one, depending on whether its phase agrees with that of the first mode. The climate shift in China around 1978 and successive occurrence of drought for more than 20 years in North China are primarily induced by the first two ENSO-like variabilities. The latest La Nina-Like phase starts from 1998 and will presumably end around 2018. It is expected that more rainfall would be in North China and less rainfall would appear in the middle- and lower-reaches of the Yangtze River valley during this period.; In this study, we investigate the decadal variability of subsurface ocean temperature anomaly (SOTA) in the tropical Pacific and associated anomalous atmospheric circulation over Asia-North Pacific-North America by analyzing 50 years of atmosphere-ocean data from the National Center for Environmental Prediction (NCEP) reanalysis project and Simple Ocean Data Assimilation (SODA). Relationship between the ENSO-Like variability and climate of China is also revealed. The results show that the decadal variability of tropical Pacific SOTA has two dominant ENSO-like modes: the primary mode is an ENSO-Like mature phase pattern, and the second mode is associated with the ENSO-like transition (developing or decaying) phase. These two modes consist of a cycle of ENSO-Like variability, which exhibits a quasi-40a fluctuation, superimposed with an oscillation of a 13a period. The ENSO-Like variability in the tropical Pacific influences the atmosphere system at the mid- and higher-latitudes and subtropical regions, resulting in decadal variability of south wind over North China, the East Asian monsoon and climate of China. During the mature phase of El Nino-Like variability, the anomalous north wind prevails over the north part of China and the East Asian monsoon weakens, with little rain in North China but much rain in the middle- and lower-reaches of the Yangtze River. With El Nino-Like decaying (La Nina-Like developing), anomalous northerly wind also prevails over North China, then the East Asian monsoon weakens with drought occurring in North China. The situation during the La Nina-Like variability is the opposite. The pattern of anomalous climate of China is primarily dominated by the first ENSO-like variability, while the second mode can modulate the contribution of the first one, depending on whether its phase agrees with that of the first mode. The climate shift in China around 1978 and successive occurrence of drought for more than 20 years in North China are primarily induced by the first two ENSO-like variabilities. The latest La Nina-Like phase starts from 1998 and will presumably end around 2018. It is expected that more rainfall would be in North China and less rainfall would appear in the middle- and lower-reaches of the Yangtze River valley during this period.
关键词	Tropical Pacific Ocean Sota Enso-like Variability Decadal Variability Climate Of China
学科领域	Meteorology & Atmospheric Sciences
收录类别	SCI
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000324567900006
WOS关键词	NORTH PACIFIC
WOS标题词	Science & Technology ; Physical Sciences
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/16396
专题	海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Chen Yong-li,Zhao Yong-ping,Wang Fan,et al. DECADAL VARIABILITY OF SUBSURFACE OCEAN TEMPERATURE ANOMALY IN TROPICAL PACIFIC AND ITS IMPACT ON CLIMATE OF CHINA[J]. JOURNAL OF TROPICAL METEOROLOGY,2013,19(3):253-263.
APA	Chen Yong-li,Zhao Yong-ping,Wang Fan,&Feng Jun-qiao.(2013).DECADAL VARIABILITY OF SUBSURFACE OCEAN TEMPERATURE ANOMALY IN TROPICAL PACIFIC AND ITS IMPACT ON CLIMATE OF CHINA.JOURNAL OF TROPICAL METEOROLOGY,19(3),253-263.
MLA	Chen Yong-li,et al."DECADAL VARIABILITY OF SUBSURFACE OCEAN TEMPERATURE ANOMALY IN TROPICAL PACIFIC AND ITS IMPACT ON CLIMATE OF CHINA".JOURNAL OF TROPICAL METEOROLOGY 19.3(2013):253-263.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
DECADAL VARIABILITY （1121KB）			限制开放	CC BY-NC-SA	浏览