Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0516.1 |
The Influence of the Indian Ocean on ENSO Stability and Flavor | |
Wieners, Claudia E.; Dijkstra, Henk A.; de Ruijter, Will P. M. | |
2017-04-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Netherlands |
英文摘要 | The effect of long-term trends and interannual, ENSO-driven variability in the Indian Ocean (IO) on the stability and spatial pattern of ENSO is investigated with an intermediate-complexity two-basin model. The Pacific basin is modeled using a fully coupled (i.e., generating its own background state) Zebiak-Cane model. IO sea surface temperature (SST) is represented by a basinwide warming pattern whose strength is constant or varies at a prescribed lag to ENSO. Both basins are coupled through an atmosphere transferring information between them. For the covarying IO SST, a warm IO during the peak of El Nino (La Nina) dampens (destabilizes) ENSO, and a warm IO during the transition from El Nino to La Nina (La Nina to El Nino) shortens (lengthens) the period. The influence of the IO on the spatial pattern of ENSO is small. For constant IO warming, the ENSO cycle is destabilized because stronger easterlies induce more background upwelling, more thermocline steepening, and a stronger Bjerknes feedback. The SST signal at the east coast weakens or reverses sign with respect to the main ENSO signal [i.e., ENSO resembles central Pacific (CP) El Ninos]. This is due to a reduced sensitivity of the SST to thermocline variations in case of a shallow background thermocline, as found near the east coast for a warm IO. With these results, the recent increase in CP El Nino can possibly be explained by the substantial IO (and west Pacific) warming over the last decades. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399678400018 |
WOS关键词 | SEA-SURFACE TEMPERATURE ; EL-NINO ; PACIFIC ; DYNAMICS ; FEEDBACK ; IMPACT ; STATE ; MODES |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/19809 |
专题 | 气候变化 |
作者单位 | Univ Utrecht, Inst Marine & Atmospher Res Utrecht, Dept Phys & Astron, Utrecht, Netherlands |
推荐引用方式 GB/T 7714 | Wieners, Claudia E.,Dijkstra, Henk A.,de Ruijter, Will P. M.. The Influence of the Indian Ocean on ENSO Stability and Flavor[J]. JOURNAL OF CLIMATE,2017,30(7). |
APA | Wieners, Claudia E.,Dijkstra, Henk A.,&de Ruijter, Will P. M..(2017).The Influence of the Indian Ocean on ENSO Stability and Flavor.JOURNAL OF CLIMATE,30(7). |
MLA | Wieners, Claudia E.,et al."The Influence of the Indian Ocean on ENSO Stability and Flavor".JOURNAL OF CLIMATE 30.7(2017). |
条目包含的文件 | 条目无相关文件。 |
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