The eddy-mean flow interaction and the intrusion of western boundary current into the south china sea-type basin in an idealized model
文献类型：期刊论文
| 作者 | Zhong, Linhao1; Hua, Lijuan2; Luo, Dehai1 |
| 刊名 | Journal of physical oceanography
 |
| 出版日期 | 2016-08-01 |
| 卷号 | 46期号:8页码:2493-2527 |
| ISSN号 | 0022-3670 |
| DOI | 10.1175/jpo-d-15-0220.1 |
| 通讯作者 | Zhong, linhao(zlh@mail.iap.ac.cn) |
| 英文摘要 | In this paper, an ideal model of the role of mesoscale eddies in the kuroshio intruding into the south china sea (scs) is developed, which represents the northwestern pacific and the scs as two rectangular basins connected by a gap. in the case of considering only intrinsic ocean variability, a time-dependent western boundary current (wbc) driven by steady wind is modeled under both eddy-resolving and noneddy-resolving resolutions. almost all simulated wbcs intrude into the adjacent sea in the form of the loop current with multiple-state transitions and eddy-shedding processes, which have aperiodic variations on intraseasonal or interannual scales, determined by the eddy-induced wbc variation. for the parameters considered in this paper, the wbc intrusion exhibits a 30-90-day cycle in the presence of the subgrid-scale eddy forcing (ssef) but a 300-500-day cycle in the absence of ssef. moreover, the roles of the grid-scale and subgrid-scale eddies in the wbc intrusion are studied by using the dynamically consistent decomposition developed by berloff. based on the large-sample composite analysis of the intrusion events, it is found that the loop current intensity is mainly determined by baroclinic processes through grid-scale, eddy-eddy interaction and subgridscale, eddy-flow interaction. the intrusion position and period are mainly regulated by the ssef to the west of gap, where the balance between relative vorticity and isopycnal thickness ssefs determines eddy detachment. generally, the relative vorticity ssef therein tends to induce wbc intrusion. however, the isopycnal thickness ssef tends to induce eddy shedding, and wbc retreat thus determines the intrusion cycle through counteracting relative vorticity ssef. |
| WOS关键词 | LOW-FREQUENCY VARIABILITY ; GULF-OF-MEXICO ; QUASI-GEOSTROPHIC MODEL ; DOUBLE-GYRE CIRCULATION ; DRIVEN OCEAN GYRES ; LOOP CURRENT ; MESOSCALE EDDIES ; LUZON STRAIT ; YUCATAN CHANNEL ; ZONAL JET |
| WOS研究方向 | Oceanography |
| WOS类目 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000380799200014 |
| 出版者 | AMER METEOROLOGICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2375646 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhong, Linhao |
| 作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Reg Climate Environm East Asia RCE TEA, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Key Lab Computat Geodynam, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhong, Linhao,Hua, Lijuan,Luo, Dehai. The eddy-mean flow interaction and the intrusion of western boundary current into the south china sea-type basin in an idealized model[J]. Journal of physical oceanography,2016,46(8):2493-2527. |
| APA | Zhong, Linhao,Hua, Lijuan,&Luo, Dehai.(2016).The eddy-mean flow interaction and the intrusion of western boundary current into the south china sea-type basin in an idealized model.Journal of physical oceanography,46(8),2493-2527. |
| MLA | Zhong, Linhao,et al."The eddy-mean flow interaction and the intrusion of western boundary current into the south china sea-type basin in an idealized model".Journal of physical oceanography 46.8(2016):2493-2527. |
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来源：中国科学院大学
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