Assessment of Interannual Sea Surface Salinity Variability and Its Effects on the Barrier Layer in the Equatorial Pacific Using BNU-ESM

IOCAS-IR

	Assessment of Interannual Sea Surface Salinity Variability and Its Effects on the Barrier Layer in the Equatorial Pacific Using BNU-ESM
	Hai ZHI ; Rong-Hua ZHANG; Fei ZHENG ; Pengfei LIN ; Lanning WANG ; Peng YU
发表期刊	Advances in Atmospheric Sciences
ISSN	0256-1530
	2016-03-10
出版年	2016
卷号	v.33 期号:03 页码:73-85
文献类型	CNKI期刊论文
摘要	As salinity stratification is necessary to form the barrier layer(BL), the quantification of its role in BL interannual variability is crucial. This study assessed salinity variability and its effect on the BL in the equatorial Pacific using outputs from Beijing Normal University Earth System Model(BNU-ESM) simulations. A comparison between observations and the BNU-ESM simulations demonstrated that BNU-ESM has good capability in reproducing most of the interannual features observed in nature. Despite some discrepancies in both magnitude and location of the interannual variability centers, the displacements of sea surface salinity(SSS), barrier layer thickness(BLT), and SST simulated by BNU-ESM in the equatorial Pacific are realistic. During El Ni n?o, for example, the modeled interannual anomalies of BLT, mixed layer depth, and isothermal layer depth, exhibit good correspondence with observations, including the development and decay of El Ni n?o in the central Pacific, whereas the intensity of the interannual variabilities is weaker relative to observations. Due to the bias in salinity simulations, the SSS front extends farther west along the equator, whereas BLT variability is weaker in the central Pacific than in observations. Further, the BNU-ESM simulations were examined to assess the relative effects of salinity and temperature variability on BLT. Consistent with previous observation-based analyses, the interannual salinity variability can make a significant contribution to BLT relative to temperature in the western-central equatorial Pacific.
关键词	feedback interannual variability sea surface salinity barrier layer thickness
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A009;A010;
CNKI专题名称	气象学;海洋学;
分类号	P732;P731.1
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	supported by the National Natural Science Foundation of China(Grant Nos.41376039,41376019 and 41421005) ; the NSFC-Shandong Joint Fund for Marine Science Research Centers(Grant No.U1406401) ; the IOCAS through the CAS Strategic Priority Project[the Western Pacific Ocean System(WPOS)] ; the WPOS in the “Strategic Priority Research Program” of the Chinese Academy of Sciences(Grant No.XDA11010304)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/189760
专题	中国科学院海洋研究所
作者单位	1.EarthSystemModelingCenterandCollegeofAtmosphericSciences,NanjingUniversityofInformationScienceandTechnology 2.KeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciences 3.InternationalCenterforClimateandEnvironmentScience,InstituteofAtmosphericPhysics,ChineseAcademyofSciences 4.StateKeyLaboratoryofNumericalModelingforAtmosphericSciencesandGeophysicalFluidDynamics,InstituteofAtmosphericPhysics,ChineseAcademyofSciences 5.CollegeofGlobalChangeandEarthSystemScience,BeijingNormalUniversity 6.CooperativeInstituteforClimateandSatellites,UniversityofMaryland,CollegePark
推荐引用方式 GB/T 7714	Hai ZHI,Rong-Hua ZHANG,Fei ZHENG,et al. Assessment of Interannual Sea Surface Salinity Variability and Its Effects on the Barrier Layer in the Equatorial Pacific Using BNU-ESM. 2016.