Upper-Ocean Lateral Heat Transports in the Ni?o3.4 Region and Their Connection with ENSO
文献类型：CNKI期刊论文
| 作者 | He ZHAO; Tongwen WU; Laurent Z.X.LI; Fanghua WU; Weihua JIE; Xiangwen LIU; Ronghua ZHANG ; Chengjun XIE
|
| 发表日期 | 2022-04-15 |
| 出处 | Journal of Meteorological Research
 |
| 关键词 | heat budget lateral heat transport surface heat flux Ni?o3.4 region El Ni?o–Southern Oscillation(ENSO) |
| 英文摘要 | In the Ni?o3.4 region(tropical Pacific, 5°S–5°N, 170°–120°W), sea surface temperature(SST) changes are highly correlated with temperature variations in the upper 40-m layer. This study explores the upper-ocean heat budget in the Ni?o3.4 region using Ocean Reanalysis System 5(ORAS5) monthly data from 1979 to 2018, with a focus on ocean heat transports at lateral boundaries in the top 40-m layer and their correlation with temperature variations. In the region, there is a well-defined structure of opposite meridional circulation in the upper and lower parts of the thermocline, characterized by divergence in the upper layer above 40 m and convergence in the lower layer. The change of mean temperature in the upper layer is determined by the sum of zonal, meridional, and vertical heat transports,which, however, tend to largely compensate for each other. In general, part of the surface heat flux from the atmosphere to the ocean and the heat transport from the subsurface ocean are transported out of the domain by meridional and zonal currents, leaving only a tiny part to warm or cool the upper ocean. The amplitude of the net surface heat flux effective for the entire 40-m layer of the ocean is weaker than the lateral heat transport. On an interannual timescale, variations of heat transports in both zonal and meridional are positively correlated with temperature anomalies,while the vertical heat transport from the subsurface ocean is negatively correlated. Composite analyses for five El Ni?o events and five La Ni?a events also revealed that there is a positive contribution of horizontal transport convergence to temperature anomalies during the evolution of El Ni?o(warming) and La Ni?a(cooling), while vertical transport acts against temperature variations. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Key Research and Development Program of China (2016YFA0602100) ; Strategic Priority Research Program of Chinese Academy of Sciences (XDB 40000000, XDB 42000000, and XDA19060102) ; National Natural Science Foundation of China [42030410 and 41690122 (41690120)] |
| 卷 | v.36期:02页:136-149 |
| 语种 | 英文; |
| 分类号 | P732 |
| ISSN号 | 2095-6037 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/187457]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.CollegeofEarthandPlanetarySciences,UniversityofChineseAcademyofSciences 2.BeijingClimateCenter,ChinaMeteorologicalAdministration 3.KeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,andCenterforOceanMega-Science,ChineseAcademyofSciences 4.CenterforExcellenceinQuaternaryScienceandGlobalChange,ChineseAcademyofSciences 5.LaboratoiredeMétéorologieDynamique,CentreNationaldelaRechercheScientifique,SorbonneUniversité,EcoleNormaleSupérieure,EcolePolytechnique 6.ChineseAcademyofMeteorologicalSciences,ChinaMeteorologicalAdministration |
| 推荐引用方式 GB/T 7714 | He ZHAO,Tongwen WU,Laurent Z.X.LI,et al. Upper-Ocean Lateral Heat Transports in the Ni?o3.4 Region and Their Connection with ENSO. 2022. |
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。