Summer persistence barrier of sea surface temperature anomalies in the central western north pacific

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	Summer persistence barrier of sea surface temperature anomalies in the central western north pacific
	Zhao, X ; Li, JP ; Zhang, WJ
刊名	ADVANCES IN ATMOSPHERIC SCIENCES
	2012
卷号	29 期号:6 页码:1159-1173
关键词	SST anomalies persistence barrier oceanic mixed layer atmospheric forcing positive cloud feedback on SSTAs
ISSN号	0256-1530
通讯作者	ljp@lasg.iap.ac.cn
中文摘要	The persistence barrier of sea surface temperature anomalies (SSTAs) in the North Pacific was investigated and compared with the ENSO spring persistence barrier. The results show that SSTAs in the central western North Pacific (CWNP) have a persistence barrier in summer: the persistence of SSTAs in the CWNP shows a significant decline in summer regardless of the starting month. Mechanisms of the summer persistence barrier in the CWNP are different from those of the spring persistence barrier of SSTAs in the central and eastern equatorial Pacific. The phase locking of SSTAs to the annual cycle does not explain the CWNP summer persistence barrier. Remote ENSO forcing has little linear influence on the CWNP summer persistence barrier, compared with local upper-ocean process and atmospheric forcing in the North Pacific. Starting in wintertime, SSTAs extend down to the deep winter mixed layer then become sequestered beneath the shallow summer mixed layer, which is decoupled from the surface layer. Thus, wintertime SSTAs do not persist through the following summer. Starting in summertime, persistence of summer SSTAs until autumn can be explained by the atmospheric forcing through a positive SSTAs-cloud/radiation feedback mechanism because the shallow summertime mixed layer is decoupled from the temperature anomalies at depth, then the following autumn-winter-spring, SSTAs persist. Thus, summer SSTAs in the CWNP have a long persistence, showing a significant decline in the following summer. In this way, SSTAs in the CWNP show a persistence barrier in summer regardless of the starting month.
学科主题	Meteorology & Atmospheric Sciences
语种	英语
WOS记录号	WOS:000310074000003
公开日期	2013-08-28
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/10083]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	Zhao, X,Li, JP,Zhang, WJ. Summer persistence barrier of sea surface temperature anomalies in the central western north pacific[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2012,29(6):1159-1173.
APA	Zhao, X,Li, JP,&Zhang, WJ.(2012).Summer persistence barrier of sea surface temperature anomalies in the central western north pacific.ADVANCES IN ATMOSPHERIC SCIENCES,29(6),1159-1173.
MLA	Zhao, X,et al."Summer persistence barrier of sea surface temperature anomalies in the central western north pacific".ADVANCES IN ATMOSPHERIC SCIENCES 29.6(2012):1159-1173.