Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0326.1 |
Analysis of the Southward Wind Shift of ENSO in CMIP5 Models | |
Abellan, Esteban1,2; McGregor, Shayne3; England, Matthew H.1,2 | |
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 | Australia |
英文摘要 | During the mature phase of El Nino-Southern Oscillation (ENSO) events there is a southward shift of anomalous zonal winds (SWS), which has been suggested to play a role in the seasonal phase locking of ENSO. Motivated by the fact that coupled climate models tend to underestimate this feature, this study examines the representation of the SWS in phase 5 of the Coupled Model Intercomparison Project (CMIP5). It is found that most models successfully reproduce the observed SWS, although the magnitude of the zonal wind stress anomaly is underestimated. Several significant differences between the models with and without the SWS are identified including biases in the magnitude and spatial distribution of precipitation and sea surface temperature (SST) anomalies during ENSO. Multiple-linear regression analysis suggests that the climatological meridional SST gradient as well as anomalous ENSO-driven convective activity over the northwest Pacific both might play a role in controlling the SWS. While the models that capture theSWS also simulate many more strong El Nino and La Nina events peaking at the correct time of year, the overall seasonal synchronization is still underestimated in these models. This is attributed to underestimated changes in warm water volume (WWV) during moderate El Nino events so that these events display relatively poor seasonal synchronization. Thus, while the SWS is an important metric, it is ultimately the magnitude and zonal extent of the wind changes that accompany this SWS that drive the changes in WWV and prime the system for termination. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399678400008 |
WOS关键词 | PACIFIC CONVERGENCE ZONE ; HEAT-CONTENT VARIABILITY ; SEA-SURFACE TEMPERATURE ; EL-NINO ; TROPICAL PACIFIC ; COLD-TONGUE ; INTERANNUAL VARIABILITY ; CLIMATE SYSTEM ; PHASE-LOCKING ; MEAN STATE |
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/19765 |
专题 | 气候变化 |
作者单位 | 1.Univ New South Wales, ARC Ctr Excellence Climate Syst Sci, Sydney, NSW, Australia; 2.Univ New South Wales, Climate Change Res Ctr, Sydney, NSW, Australia; 3.Monash Univ, Sch Earth Atmosphere & Environm, Clayton, Vic, Australia |
推荐引用方式 GB/T 7714 | Abellan, Esteban,McGregor, Shayne,England, Matthew H.. Analysis of the Southward Wind Shift of ENSO in CMIP5 Models[J]. JOURNAL OF CLIMATE,2017,30(7). |
APA | Abellan, Esteban,McGregor, Shayne,&England, Matthew H..(2017).Analysis of the Southward Wind Shift of ENSO in CMIP5 Models.JOURNAL OF CLIMATE,30(7). |
MLA | Abellan, Esteban,et al."Analysis of the Southward Wind Shift of ENSO in CMIP5 Models".JOURNAL OF CLIMATE 30.7(2017). |
条目包含的文件 | 条目无相关文件。 |
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