A Simple GCM Study on the Relationship between ENSO and the Southern Annular Mode
文献类型：期刊论文
| 作者 | Gong, Tingting1,2; Feldstein, Steven B.2; Luo, Dehai3 |
| 刊名 | JOURNAL OF THE ATMOSPHERIC SCIENCES
 |
| 出版日期 | 2013-06-01 |
| 卷号 | 70期号:6页码:1821-1832 |
| ISSN号 | 0022-4928 |
| 通讯作者 | Gong, TT |
| 中文摘要 | This study investigates the relationship between El Nino-Southern Oscillation (ENSO) and southern annular mode (SAM) events with an idealized general circulation model. A series of model calculations are performed to examine why positive (negative) intraseasonal SAM events are observed to occur much more frequently during La Nina (El Nino). Seven different model runs are performed: a control run, three El Nino runs (the first with a zonally symmetric heating field, the second with a zonally asymmetric heating/cooling field, and the third that combines both fields), and three La Nina runs (with heating fields of opposite sign). The model runs with the zonally symmetric and combined heating fields are found to yield the same relationship between the phase of ENSO and the preferred phase for SAM events as is observed in the atmosphere. In contrast, the zonally asymmetric model runs are found to have the opposite SAM-ENSO phase preference characteristics. Since a reduced midlatitude meridional potential vorticity gradient has been linked to a greater frequency of positive-phase SAM events, and vice versa for negative SAM events, the meridional potential vorticity gradient in the various model runs was compared. The results suggest that the phase preference of SAM events during ENSO arises from the impact of the zonal-mean heating on the midlatitude meridional potential vorticity gradient. |
| 英文摘要 | This study investigates the relationship between El Nino-Southern Oscillation (ENSO) and southern annular mode (SAM) events with an idealized general circulation model. A series of model calculations are performed to examine why positive (negative) intraseasonal SAM events are observed to occur much more frequently during La Nina (El Nino). Seven different model runs are performed: a control run, three El Nino runs (the first with a zonally symmetric heating field, the second with a zonally asymmetric heating/cooling field, and the third that combines both fields), and three La Nina runs (with heating fields of opposite sign). |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Meteorology & Atmospheric Sciences |
| 类目[WOS] | Meteorology & Atmospheric Sciences |
| 研究领域[WOS] | Meteorology & Atmospheric Sciences |
| 关键词[WOS] | NORTH-ATLANTIC OSCILLATION ; ROSSBY-WAVE-BREAKING ; ZONAL FLOW FEEDBACK ; SUBTROPICAL TROPOPAUSE ; CLIMATE VARIABILITY ; CIRCULATION ; HEMISPHERE ; TELECONNECTION ; LATITUDE ; SPECTRA |
| 收录类别 | SCI |
| 原文出处 | 10.1175/JAS-D-12-0161.1 |
| 语种 | 英语 |
| WOS记录号 | WOS:000319668400019 |
| 公开日期 | 2014-07-17 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/16389]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanog, Qingdao 266071, Peoples R China 2.Penn State Univ, Dept Meteorol, University Pk, PA 16802 USA 3.Chinese Acad Sci, Inst Atmospher Phys, RCE TEA, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, Tingting,Feldstein, Steven B.,Luo, Dehai. A Simple GCM Study on the Relationship between ENSO and the Southern Annular Mode[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2013,70(6):1821-1832. |
| APA | Gong, Tingting,Feldstein, Steven B.,&Luo, Dehai.(2013).A Simple GCM Study on the Relationship between ENSO and the Southern Annular Mode.JOURNAL OF THE ATMOSPHERIC SCIENCES,70(6),1821-1832. |
| MLA | Gong, Tingting,et al."A Simple GCM Study on the Relationship between ENSO and the Southern Annular Mode".JOURNAL OF THE ATMOSPHERIC SCIENCES 70.6(2013):1821-1832. |
入库方式： OAI收割
来源：海洋研究所
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