The roles of tropical and subtropical wind stress anomalies in the El Nino Modoki onset
文献类型：期刊论文
| 作者 | Wang, Lei5; Wang, Xin3; Guan, Chengyang4; Huang, Rui Xin1; Tan, Wei2,3 |
| 刊名 | CLIMATE DYNAMICS
 |
| 出版日期 | 2019 |
| 卷号 | 52期号:11页码:6585 |
| 关键词 | El Nino Modoki Ekman feedback Northern subtropical Pacific |
| ISSN号 | 0930-7575 |
| DOI | 10.1007/s00382-018-4534-3 |
| 英文摘要 | The El Nino Modoki is separated into two types, El Nino Modoki I and El Nino Modoki II, which are characterized by substantially different mechanism. According to comparisons between the evolution of air-sea coupled processes and heat budget analyses, this study discovered the distinct dynamical mechanism of the onset of El Nino Modoki II compared to that of El Nino Modoki I. For El Nino Modoki I, westerly wind anomalies in the western Pacific appear earlier than warm sea surface temperature (SST) anomalies in the central tropical Pacific; in addition, zonal advection is responsible for changes in mixed-layer temperature in the Nino-4 region during the developing phase in spring and summer. However, warm SST anomalies accompany easterly anomalies in the central tropical Pacific, and there are no westerly anomalies in the western tropical Pacific during the developing phase in spring and summer for El Nino Modoki II. For El Nino Modoki II, Ekman feedback is the major contributor to changes in mixed-layer temperature. According to reanalysis data, the 2.5-layer model results and coupled model simulations, anomalous westerly wind stress in the subtropical North Pacific and easterly wind stress in the central-eastern tropical Pacific can lead to equatorward and westward oceanic current anomalies, thus enhancing meridional and zonal convergences at upper layer. Because anomalous convergence at upper layer can inhibit upwelling motion in the central tropical Pacific, SST anomalies in the central tropical Pacific tend to be warm, even without anomalous westerlies in the western Pacific. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/17717]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA 3.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, 164 West Xingang Rd, Guangzhou 510301, Guangdong, Peoples R China 4.Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao, Shandong, Peoples R China 5.State Ocean Adm, Inst Oceanog 1, Qingdao, Shandong, Peoples R China 6.Guangdong Ocean Univ, Guangdong Prov Key Lab Coastal Ocean Variat & Dis, Dept Oceanog, Coll Ocean & Meteorol, Zhanjiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Lei,Wang, Xin,Guan, Chengyang,et al. The roles of tropical and subtropical wind stress anomalies in the El Nino Modoki onset[J]. CLIMATE DYNAMICS,2019,52(11):6585, 6597. |
| APA | Wang, Lei,Wang, Xin,Guan, Chengyang,Huang, Rui Xin,&Tan, Wei.(2019).The roles of tropical and subtropical wind stress anomalies in the El Nino Modoki onset.CLIMATE DYNAMICS,52(11),6585. |
| MLA | Wang, Lei,et al."The roles of tropical and subtropical wind stress anomalies in the El Nino Modoki onset".CLIMATE DYNAMICS 52.11(2019):6585. |
入库方式： OAI收割
来源：南海海洋研究所
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