Interannual variability of eddy kinetic energy in the South China Sea related to two types of winter circulation events
文献类型：CNKI期刊论文
| 作者 | Wenlian LI; Qinyan LIU; Wendong FANG; Tingting ZU; Haiying CHEN |
| 发表日期 | 2023-05-15 |
| 出处 | Journal of Oceanology and Limnology
 |
| 关键词 | two-type winter circulation South China Sea western boundary current energy budget |
| 英文摘要 | Interannual variations of the eddy kinetic energy(EKE) related to two types of winter circulation events(“O” and “U”) were investigated based on the outputs of the Ocean General Circulation Model(OGCM) for the Earth Simulator(OFES) and the corresponding energetic analyses. Results show that the EKE is strong and extends eastward to offshore the Vietnam coast about 2°, associated with the weaker South China Sea western boundary current(SCSwbc) in “O” type years, while the EKE is weak and high value that can be attained is narrowed along the coast, associated with the stronger SCSwbc in “U” type years. The energy budget shows that the wind stress and barotropic/baroclinic instability are important factors to regulate the EKE in “U” and “O” years. For “U” years, under a strong winter monsoon forcing, the SCSwbc strengthen, the directly wind work and barotropic conversion from the mean kinetic energy(MKE) to EKE are weak, thus the EKE decrease corresponding to the baroclinic conversion from the kinetic energy to potential energy. However, the situation is reversed in “O” years.Under the influence of El Ni?o events, wind stress forces can weaken SCSwbc and enhance EKE in pattern “O”, whereas La Ni?a events have relatively weaker influences. The barotropic conversion rate in “O” type is nearly eight times of the “U” type. The pressure work and advection term are the main sources to greatly suppress EKE in the SCSwbc region. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | the Science and Technology Basic Resources Investigation Program of China (No. 2017FY201402) ; the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)(No. GML 2019ZD0304) ; the National Key Research and Development Program of China (No. 2017YFC1404000) ; the National Natural Science Foundation of China (Nos. 41876017, 42176027, 41628601, 41706027, 41776014) ; the Guangzhou Science and Technology Plan Project (No. 202102080364) ; the Guangdong Basic and Applied Basic Research Foundation (No.2022A1515011863) ; the State Key Laboratory of Tropical Oceanography,South China Sea Institute of Oceanology Chinese Academy of Sciences (Nos. LTOZZ2101, LTOZZ2102) |
| 卷 | v.41期:03页:3-23 |
| 语种 | 英文; |
| 分类号 | P731.27 |
| ISSN号 | 2096-5508 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/187125]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) 2.UniversityofChineseAcademyofSciences 3.SouthChinaSeaInstituteofOceanology,ChineseAcademyofSciences 4.SouthernMarineScienceandEngineeringGuangdongLaboratory(Guangzhou) 5.CASKeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciences 6.CenterforOceanMega-Science,ChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Wenlian LI,Qinyan LIU,Wendong FANG,et al. Interannual variability of eddy kinetic energy in the South China Sea related to two types of winter circulation events. 2023. |
入库方式： OAI收割
来源：海洋研究所
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