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Indian Ocean Capacitor Effect on Indo-Western Pacific Climate during the Summer following El Nino
文献类型：期刊论文
| 作者 | Xie, SP ; Hu, KM ; Hafner, J ; Tokinaga, H ; Du, Y ; Huang, G ; Sampe, T |
| 刊名 | JOURNAL OF CLIMATE
 |
| 出版日期 | 2009 |
| 卷号 | 22期号:3页码:730-747 |
| ISSN号 | 0894-8755 |
| 通讯作者 | xie@hawaii.edu |
| 中文摘要 | Significant climate anomalies persist through the summer (June-August) after El Nino dissipates in spring over the equatorial Pacific. They include the tropical Indian Ocean (TIO) sea surface temperature (SST) warming, increased tropical tropospheric temperature, an anomalous anticyclone over the subtropical northwest Pacific, and increased mei-yu-baiu rainfall over East Asia. The cause of these lingering El Nino effects during summer is investigated using observations and an atmospheric general circulation model (GCM). The results herein indicate that the TIO warming acts like a capacitor anchoring atmospheric anomalies over the Indo-western Pacific Oceans. It causes tropospheric temperature to increase by a moist-adiabatic adjustment in deep convection, emanating a baroclinic Kelvin wave into the Pacific. In the northwest Pacific, this equatorial Kelvin wave induces northeasterly surface wind anomalies, and the resultant divergence in the subtropics triggers suppressed convection and the anomalous anticyclone. The GCM results support this Kelvin wave-induced Ekman divergence mechanism. In response to a prescribed SST increase over the TIO, the model simulates the Kelvin wave with low pressure on the equator as well as suppressed convection and the anomalous anticyclone over the subtropical northwest Pacific. An additional experiment further indicates that the north Indian Ocean warming is most important for the Kelvin wave and northwest Pacific anticyclone, a result corroborated by observations. These results have important implications for the predictability of Indo-western Pacific summer climate: the spatial distribution and magnitude of the TIO warming, rather than simply whether there is an El Nino in the preceding winter, affect summer climate anomalies over the Indo-western Pacific and East Asia. |
| 学科主题 | Meteorology & Atmospheric Sciences |
| 收录类别 | SCI |
| 原文出处 | AMER METEOROLOGICAL SOC |
| WOS记录号 | WOS:000263908000016 |
| 公开日期 | 2011-07-03 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/6169]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 推荐引用方式 GB/T 7714 | Xie, SP,Hu, KM,Hafner, J,et al. Indian Ocean Capacitor Effect on Indo-Western Pacific Climate during the Summer following El Nino[J]. JOURNAL OF CLIMATE,2009,22(3):730-747. |
| APA | Xie, SP.,Hu, KM.,Hafner, J.,Tokinaga, H.,Du, Y.,...&Sampe, T.(2009).Indian Ocean Capacitor Effect on Indo-Western Pacific Climate during the Summer following El Nino.JOURNAL OF CLIMATE,22(3),730-747. |
| MLA | Xie, SP,et al."Indian Ocean Capacitor Effect on Indo-Western Pacific Climate during the Summer following El Nino".JOURNAL OF CLIMATE 22.3(2009):730-747. |
入库方式： OAI收割
来源：南海海洋研究所
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