Subtropical dipole mode in the Southern Hemisphere: A global view
文献类型：期刊论文
| 作者 | Wang, F. ; Wang, F, Chinese Acad Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Shandong, Peoples R China
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| 刊名 | GEOPHYSICAL RESEARCH LETTERS
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| 出版日期 | 2010-05-19 |
| 卷号 | 37页码:L10702 |
| 关键词 | Air-sea Interaction Indian-ocean Coupled Variability Atlantic Circulation Reanalysis Events |
| ISSN号 | 0094-8276 |
| DOI | 10.1029/2010GL042750 |
| 文献子类 | Article |
| 英文摘要 | A global wavenumber-3 dipole SST mode is showed to exist in the Southern Hemisphere subtropical climate variability in austral summer. A positive (negative) phase of the mode is characterized by cool (warm) SST anomalies in the east and warm (cool) SST anomalies in the southwest of the south Indian, Pacific, and Atlantic Oceans, respectively. This coherent dipole structure is largely a response of ocean mixed layer to the atmospheric forcing characterized by migration and modulation of the subtropical high-pressures, in which the latent heat flux play a leading role through wind-induced evaporation, although ocean dynamics may also be crucial in forming SST anomalies attached to the continents. Exploratory analyses suggest that this mode is strongly damped by the negative heat flux feedback, with a persistence time about three months and no spectral peak at interannual to decadal time scales. As the subtropical dipole mode is linearly independent of ENSO and SAM, whether it represents an additional source of climate predictability should be further studied. Citation: Wang, F. (2010), Subtropical dipole mode in the Southern Hemisphere: A global view, Geophys. Res. Lett., 37, L10702, doi: 10.1029/2010GL042750.; A global wavenumber-3 dipole SST mode is showed to exist in the Southern Hemisphere subtropical climate variability in austral summer. A positive (negative) phase of the mode is characterized by cool (warm) SST anomalies in the east and warm (cool) SST anomalies in the southwest of the south Indian, Pacific, and Atlantic Oceans, respectively. This coherent dipole structure is largely a response of ocean mixed layer to the atmospheric forcing characterized by migration and modulation of the subtropical high-pressures, in which the latent heat flux play a leading role through wind-induced evaporation, although ocean dynamics may also be crucial in forming SST anomalies attached to the continents. Exploratory analyses suggest that this mode is strongly damped by the negative heat flux feedback, with a persistence time about three months and no spectral peak at interannual to decadal time scales. As the subtropical dipole mode is linearly independent of ENSO and SAM, whether it represents an additional source of climate predictability should be further studied. Citation: Wang, F. (2010), Subtropical dipole mode in the Southern Hemisphere: A global view, Geophys. Res. Lett., 37, L10702, doi: 10.1029/2010GL042750. |
| 学科主题 | Geosciences, Multidisciplinary |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000277963200002 |
| 公开日期 | 2010-11-18 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/1770]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Wang, F, Chinese Acad Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Shandong, Peoples R China |
| 作者单位 | Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, F.,Wang, F, Chinese Acad Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Shandong, Peoples R China. Subtropical dipole mode in the Southern Hemisphere: A global view[J]. GEOPHYSICAL RESEARCH LETTERS,2010,37:L10702. |
| APA | Wang, F.,&Wang, F, Chinese Acad Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Shandong, Peoples R China.(2010).Subtropical dipole mode in the Southern Hemisphere: A global view.GEOPHYSICAL RESEARCH LETTERS,37,L10702. |
| MLA | Wang, F.,et al."Subtropical dipole mode in the Southern Hemisphere: A global view".GEOPHYSICAL RESEARCH LETTERS 37(2010):L10702. |
入库方式： OAI收割
来源：海洋研究所
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