ENSO cycle and climate anomaly in China

doi:10.1007/s00343-012-1245-1

IOCAS-IR > 海洋环流与波动重点实验室

	ENSO cycle and climate anomaly in China
	Chen Yongli 1,2; Zhao Yongping 1,2; Feng Junqiao 1,2; Wang Fan1,2 ; Chen, YL (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China.
	2012-11-01
发表期刊	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	0254-4059
卷号	30 期号:6 页码:985-1000
文章类型	Article
摘要	The inter-annual variability of the tropical Pacific Subsurface Ocean Temperature Anomaly (SOTA) and the associated anomalous atmospheric circulation over the Asian North Pacific during the El Nio-Southern Oscillation (ENSO) were investigated using National Centers for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR) atmospheric reanalysis data and simple ocean data simulation (SODA). The relationship between the ENSO and the climate of China was revealed. The main results indicated the following: 1) there are two ENSO modes acting on the subsurface tropical Pacific. The first mode is related to the mature phase of ENSO, which mainly appears during winter. The second mode is associated with a transition stage of the ENSO developing or decaying, which mainly occurs during summer; 2) during the mature phase of El Nio, the meridionality of the atmosphere in the mid-high latitude increases, the Aleutian low and high pressure ridge over Lake Baikal strengthens, northerly winds prevail in northern China, and precipitation in northern China decreases significantly. The ridge of the Ural High strengthens during the decaying phase of El Nio, as atmospheric circulation is sustained during winter, and the northerly wind anomaly appears in northern China during summer. Due to the ascending branch of the Walker circulation over the western Pacific, the western Pacific Subtropical High becomes weaker, and south-southeasterly winds prevail over southern China. As a result, less rainfall occurs over northern China and more rainfall over the Changjiang River basin and the southwestern and eastern region of Inner Mongolia. The flood disaster that occurred south of Changjiang River can be attributed to this. The La Nia event causes an opposite, but weaker effect; 3) the ENSO cycle can influence climate anomalies within China via zonal and meridional heat transport. This is known as the "atmospheric-bridge", where the energy anomaly within the tropical Pacific transfers to the mid-high latitude in the northern Pacific through Hadley cells and Rossby waves, and to the western Pacific-eastern Indian Ocean through Walker circulation. This research also discusses the special air-sea boundary processes during the ENSO events in the tropical Pacific, and indicates that the influence of the subsurface water of the tropical Pacific on the atmospheric circulation may be realized through the sea surface temperature anomalies of the mixed water, which contact the atmosphere and transfer the anomalous heat and moisture to the atmosphere directly. Moreover, the reason for the heavy flood within the Changjiang River during the summer of 1998 is reviewed in this paper.
关键词	Enso Cycle Tropical Pacific Ocean Subsurface Ocean Temperature Anomalies Interannual Variability Climate Anomaly Of China
学科领域	Limnology ; Oceanography
DOI	10.1007/s00343-012-1245-1
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000311286500011
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/12144
专题	海洋环流与波动重点实验室
通讯作者	Chen, YL (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China.
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
第一作者单位	中国科学院海洋研究所; 海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Chen Yongli,Zhao Yongping,Feng Junqiao,et al. ENSO cycle and climate anomaly in China[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2012,30(6):985-1000.
APA	Chen Yongli,Zhao Yongping,Feng Junqiao,Wang Fan,&Chen, YL .(2012).ENSO cycle and climate anomaly in China.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,30(6),985-1000.
MLA	Chen Yongli,et al."ENSO cycle and climate anomaly in China".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 30.6(2012):985-1000.

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