Salinity effects on the 2014 warm “Blob” in the Northeast Pacific
文献类型：CNKI期刊论文
| 作者 | Hai Zhi; Pengfei Lin; Rong-Hua Zhang ; Fei Chai; Hailong Liu
|
| 发表日期 | 2019-09-15 |
| 出处 | Acta Oceanologica Sinica
 |
| 关键词 | warm "Blob" mixed layer depth surface and subsurface salinity anomalies |
| 英文摘要 | A significant strong, warm "Blob"(a large circular water body with a positive ocean temperature anomaly)appeared in the Northeast Pacific(NEP) in the boreal winter of 2013–2014, which induced many extreme climate events in the US and Canada. In this study, analyses of the temperature and salinity anomaly variations from the Array for Real-time Geostrophic Oceanography(Argo) data provided insights into the formation of the warm"Blob" over the NEP. The early negative salinity anomaly dominantly contributed to the shallower mixed layer depth(MLD) in the NEP during the period of 2012–2013. Then, the shallower mixed layer trapped more heat in the upper water column and resulted in a warmer sea surface temperature(SST), which enhanced the warm"Blob". The salinity variability contributed to approximately 60% of the shallowing MLD related to the warm"Blob". The salinity anomaly in the warm "Blob" region resulted from a combination of both local and nonlocal effects. The freshened water at the surface played a local role in the MLD anomaly. Interestingly, the MLD anomaly was more dependent on the local subsurface salinity anomaly in the 100–150 m depth range in the NEP.The salinity anomaly in the 50–100 m depth range may be linked to the anomaly in the 100–150 m depth range by vertical advection or mixing. The salinity anomaly in the 100–150 m depth range resulted from the eastward transportation of a subducted water mass that was freshened west of the dateline, which played a nonlocal role.The results suggest that the early salinity anomaly in the NEP related to the warm "Blob" may be a precursor signal of interannual and interdecadal variabilities. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | The National Key Research and Development Program for Developing Basic Sciences under contract Nos 2016YFC1401601 and 2016YFC1401401 ; the National Natural Science Foundation of China under contract Nos 41376026,41690122,41690120 and 41475101 ; the NSFC–Shandong Joint Fund for Marine Science Research Centers under contract No.U1406401 ; the NSFC Innovative Group Grant under contract No.41421005 ; the Taishan Scholarship |
| 卷 | v.38期:09页:28-38 |
| 语种 | 英文; |
| 分类号 | P73 |
| ISSN号 | 0253-505X |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/188455]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.StateKeyLaboratoryofSatelliteOceanEnvironmentDynamics,SecondInstituteofOceanography,MinistryofNaturalResources 2.KeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciences 3.SchoolofMarineSciences,UniversityofMaine 4.CollegeofAtmosphericSciences,NanjingUniversityofInformationScienceandTechnology 5.StateKeyLaboratoryofNumericalModelingforAtmosphericSciencesandGeophysicalFluidDynamics,InstituteofAtmosphericPhysics(IAP),ChineseAcademyofSciences 6.CollegeofEarthSciences,UniversityofChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Hai Zhi,Pengfei Lin,Rong-Hua Zhang,et al. Salinity effects on the 2014 warm “Blob” in the Northeast Pacific. 2019. |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。