Simulation of Salinity Variability and the Related Freshwater Flux Forcing in the Tropical Pacific: An Evaluation Using the Beijing Normal University Earth System Model(BNU-ESM)
文献类型：CNKI期刊论文
| 作者 | ZHI Hai; ZHANG Rong-Hua ; LIN Pengfei; WANG Lanning
|
| 发表日期 | 2015-11-11 |
| 出处 | Advances in Atmospheric Sciences
 |
| 关键词 | freshwater flux,salinity,feedback,tropical Pacific,BNU-ESM |
| 英文摘要 | The climatology and interannual variability of sea surface salinity(SSS) and freshwater flux(FWF) in the equatorial Pacific are analyzed and evaluated using simulations from the Beijing Normal University Earth System Model(BNU-ESM).The simulated annual climatology and interannual variations of SSS, FWF, mixed layer depth(MLD), and buoyancy flux agree with those observed in the equatorial Pacific. The relationships among the interannual anomaly fields simulated by BNU-ESM are analyzed to illustrate the climate feedbacks induced by FWF in the tropical Pacific. The largest interannual variations of SSS and FWF are located in the western-central equatorial Pacific. A positive FWF feedback effect on sea surface temperature(SST) in the equatorial Pacific is identified. As a response to El Ni ?no–Southern Oscillation(ENSO),the interannual variation of FWF induces ocean processes which, in turn, enhance ENSO. During El Ni ?no, a positive FWF anomaly in the western-central Pacific(an indication of increased precipitation rates) acts to enhance a negative salinity anomaly and a negative surface ocean density anomaly, leading to stable stratification in the upper ocean. Hence, the vertical mixing and entrainment of subsurface water into the mixed layer are reduced, and the associated El Ni ?no is enhanced. Related to this positive feedback, the simulated FWF bias is clearly reflected in SSS and SST simulations, with a positive FWF perturbation into the ocean corresponding to a low SSS and a small surface ocean density in the western-central equatorial Pacific warm pool. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | supported by the National Natural Science Foundation of China(NSFC)(Grant Nos.41376039,41376019,and 41475101) ; the NSFC–Shandong Joint Fund for Marine Science Research Centers(Grant No.U1406401) ; the NSFC Innovative Group Grant(Project No.41421005) ; the IOCAS[Institute of Oceanology,Chinese Academy of Sciences(CAS)]through the CAS Strategic Priority Project[Western Pacific Ocean System(WPOS)] ; supported by the Joint Center for Global Change Studies(Project No.105019) ; the Key Laboratory of Meteorological Disaster of Ministry of Education,NUIST(Nanjing University of Information Science&Technology)(Grant No.KLME 1311) ; the Priority Academic Program Development(PAPD)of Jiangsu Higher Education Institutions |
| 卷 | v.32期:11页:105-118 |
| 语种 | 英文; |
| 分类号 | P732;P731 |
| ISSN号 | 0256-1530 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/189871]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.StateKeyLaboratoryofNumericalModelingforAtmosphericSciencesandGeophysicalFluidDynamics,InstituteofAtmosphericPhysics,ChineseAcademyofSciences 2.TheEarthSystemModelingCenterandCollegeofAtmosphericSciences,NanjingUniversityofInformationScienceandTechnology 3.KeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciences 4.CollegeofGlobalChangeandEarthSystemScience,BeijingNormalUniversity |
| 推荐引用方式 GB/T 7714 | ZHI Hai,ZHANG Rong-Hua,LIN Pengfei,et al. Simulation of Salinity Variability and the Related Freshwater Flux Forcing in the Tropical Pacific: An Evaluation Using the Beijing Normal University Earth System Model(BNU-ESM). 2015. |
入库方式： OAI收割
来源：海洋研究所
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