Special Sea-Level and Circulation Anomalies in the Philippine Sea During the 2006/2007 and 2009/2010 El Nino Events

doi:10.1029/2022JC019537

IOCAS-IR > 海洋环流与波动重点实验室

	Special Sea-Level and Circulation Anomalies in the Philippine Sea During the 2006/2007 and 2009/2010 El Nino Events
	Li, Rui 1,2; Wang, Fan1,2,3 ; Li, Yuanlong 1,3; Ren, Qiuping1 ; Lyu, Yilong1
	2023-06-01
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN	2169-9275
卷号	128 期号:6 页码:20
通讯作者	Wang, Fan(fwang@qdio.ac.cn)
摘要	The Philippine Sea (PS) tends to show sea-level falling and cyclonic upper-layer circulation anomalies during the developing stage (spring and summer) of El Nino, with notable influences on the circulation, climate, and biosystems of downstream regions. These changes show diversity across individual events, partly associated with El Nino-Southern Oscillation complexity and bringing uncertainties to scientific attribution and prediction. Here, we focus on the positive sea-level anomalies (SLAs) and anticyclonic circulation anomalies in the boreal spring and summer of 2006 and 2009, which are opposite in sign to the changes observed during other El Nino events. Correspondingly, exceptional changes were seen in downstream regions, such as the enhanced Indonesian throughflow in the Makassar Strait. Our analysis highlights the persistent equatorial easterly wind anomalies during the preceding winter, which were likely favorable for these special changes in 2006 and 2009. This is confirmed by sensitivity experiments of a simplified ocean model. The results show that the negative off-equatorial wind stress curls in the western and central North Pacific play the key role in causing positive SLAs in the PS through evoking downwelling Rossby waves, and equatorial winds played a secondary role. Further analysis indicates that such special changes of the PS tend to take place in late-onset weak El Nino events following the La Nina conditions.
DOI	10.1029/2022JC019537
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[42106029] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB4200000] ; Shandong Provincial Natural Science Foundation[ZR2020JQ17] ; Ocean Science Data Center, IOCAS
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:001004955200001
出版者	AMER GEOPHYSICAL UNION
WOS关键词	NORTH EQUATORIAL CURRENT ; WESTERN BOUNDARY CURRENTS ; TROPICAL PACIFIC-OCEAN ; INTERANNUAL VARIABILITY ; MINDANAO CURRENT ; INDONESIAN THROUGHFLOW ; CLIMATE VARIABILITY ; EASTERN-PACIFIC ; HEAT-CONTENT ; WIND BURSTS
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/182244
专题	海洋环流与波动重点实验室
通讯作者	Wang, Fan
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Laoshan Lab, Qingdao, 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	Li, Rui,Wang, Fan,Li, Yuanlong,et al. Special Sea-Level and Circulation Anomalies in the Philippine Sea During the 2006/2007 and 2009/2010 El Nino Events[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2023,128(6):20.
APA	Li, Rui,Wang, Fan,Li, Yuanlong,Ren, Qiuping,&Lyu, Yilong.(2023).Special Sea-Level and Circulation Anomalies in the Philippine Sea During the 2006/2007 and 2009/2010 El Nino Events.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,128(6),20.
MLA	Li, Rui,et al."Special Sea-Level and Circulation Anomalies in the Philippine Sea During the 2006/2007 and 2009/2010 El Nino Events".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 128.6(2023):20.