Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0385.1 |
Observed El Nino SSTA Development and the Effects of Easterly and Westerly Wind Events in 2014/15 | |
Chiodi, Andrew M.1; Harrison, D. E. | |
2017-02-01 | |
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:4 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The unexpected halt of warm sea surface temperature anomaly (SSTA) growth in 2014 and development of a major El Nino in 2015 has drawn attention to our ability to understand and predict El Nino development. Wind stress-forced ocean model studies have satisfactorily reproduced observed equatorial Pacific SSTAs during periods when data return from the TAO/TRITON buoy network was high. Unfortunately, TAO/TRITON data return in 2014 was poor. To study 2014 SSTA development, the observed wind gaps must be filled. The hypothesis that subseasonal wind events provided the dominant driver of observed waveguide SSTA development in 2014 and 2015 is used along with the available buoy winds to construct an oceanic waveguide-wide surface stress field of westerly wind events (WWEs) and easterly wind surges (EWSs). It is found that the observed Nino-3.4 SSTA development in 2014 and 2015 can thereby be reproduced satisfactorily. Previous 2014 studies used other wind fields and reached differing conclusions about the importance of WWEs and EWSs. Experiment results herein help explain these inconsistencies, and clarify the relative importance of WWEs and EWSs. It is found that the springtime surplus of WWEs and summertime balance between WWEs and EWSs (yielding small net wind stress anomaly) accounts for the early development and midyear reversal of El Nino-like SSTA development in 2014. Astrong abundance of WWEs in 2015 accounts for the rapid SSTA warming observed then. Accurately forecasting equatorial Pacific SSTA in years like 2014 and 2015 may require learning to predict WWE and EWS occurrence characteristics. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395522400020 |
WOS关键词 | SURFACE-TEMPERATURE ANOMALIES ; BURSTS |
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/20787 |
专题 | 气候变化 |
作者单位 | 1.Univ Washington, Joint Inst Study Atmosphere & Oceans, Seattle, WA 98195 USA; 2.NOAA, Pacific Marine Environm Lab, 7600 Sand Point Way Ne, Seattle, WA 98115 USA |
推荐引用方式 GB/T 7714 | Chiodi, Andrew M.,Harrison, D. E.. Observed El Nino SSTA Development and the Effects of Easterly and Westerly Wind Events in 2014/15[J]. JOURNAL OF CLIMATE,2017,30(4). |
APA | Chiodi, Andrew M.,&Harrison, D. E..(2017).Observed El Nino SSTA Development and the Effects of Easterly and Westerly Wind Events in 2014/15.JOURNAL OF CLIMATE,30(4). |
MLA | Chiodi, Andrew M.,et al."Observed El Nino SSTA Development and the Effects of Easterly and Westerly Wind Events in 2014/15".JOURNAL OF CLIMATE 30.4(2017). |
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