Summer Persistence Barrier of Sea Surface Temperature Anomalies in the Central Western North Pacific

IOCAS-IR

	Summer Persistence Barrier of Sea Surface Temperature Anomalies in the Central Western North Pacific
	Zhao X(赵霞); Li JP(李建平); Zhang WJ(张文君)
发表期刊	Advances in Atmospheric Sciences
ISSN	0256-1530
	2012-11-10
出版年	2012
卷号	v.29 期号:06 页码:33-47
文献类型	CNKI期刊论文
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.
关键词	SST anomalies,persistence barrier,oceanic mixed layer,atmospheric forcing,positive cloud feedback on SSTAs
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A010;
CNKI专题名称	海洋学;
分类号	P731.11
收录类别	中科院核心
语种	英文;
资助项目(基金）	supported by the 973 program(Grant No.2010CB950400) ; the Innovation Key Program(Grant No.KZCX2-YWQ11-02) of the Chinese Academy of Sciences ; the NSFC project(Grant Nos.41030961,41005042,and 41005049) ; the Fund of State Key Laboratory of Tropical Oceanography(South China Sea Institute of Oceanology,Chinese Academy of Sciences(LTO1101) ; the 973 program (Grant No.2012CB956000)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/191089
专题	中国科学院海洋研究所
作者单位	1.LaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciences 2.NationalKeyLaboratoryofNumericalModelingforAtmosphericSciencesandGeophysicalFluidDynamics,InstituteofAtmosphericPhysics,ChineseAcademyofScience 3.StateKeyLaboratoryofTropicalOceanography,SouthChinaSeaInstituteofOceanology,ChineseAcademyofSciences 4.KeyLaboratoryofMeteorologicalDisasterofMinistryofEducationandCollegeofAtmosphericSciences,NanjingUniversityofInformationScienceandTechnology
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. 2012.