Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-17-0576.1 |
Large-Scale Environmental Characteristics of MJOs that Strengthen and Weaken over the Maritime Continent | |
Burleyson, Casey D.1; Hagos, Samson M.1; Feng, Zhe1; Kerns, Brandon W. J.2; Kim, Daehyun2 | |
2018-07-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:14页码:5731-5748 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The characteristics of Madden-Julian oscillation (MJO) events that strengthen and weaken over the Maritime Continent (MC) are examined. The real-time multivariate MJO (RMM) index is used to assess changes in global MJO amplitude over the MC. The MJO weakens at least twice as often as it strengthens over the MC, with weakening MJOs being twice as likely during El Nino compared to La Nina years and the reverse for strengthening events. MJO weakening shows a pronounced seasonal cycle that has not been previously documented. During the Northern Hemisphere (NH) summer and fall the RMM index can strengthen over the MC. MJOs that approach the MC during the NH winter typically weaken according to the RMM index. This seasonal cycle corresponds to whether the MJO crosses the MC primarily north or south of the equator. Because of the seasonal cycle, weakening MJOs are characterized by positive sea surface temperature and moist-static energy anomalies in the Southern Hemisphere (SH) of the MC compared to strengthening events. Analysis of the outgoing longwave radiation (OLR) MJO index (OMI) shows that MJO precipitation weakens when it crosses the MC along the equator. A possible explanation of this based on previous results is that the MJO encounters more landmasses and taller mountains when crossing along the equator or in the SH. The new finding of a seasonal cycle in MJO weakening over the MC highlights the importance of sampling MJOs throughout the year in future field campaigns designed to study MJO-MC interactions. |
英文关键词 | Maritime Continent ENSO Madden-Julian oscillation Sea surface temperature Tropical variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000436100300003 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; TROPICAL INTRASEASONAL OSCILLATIONS ; PRECIPITATION ; PROPAGATION ; TRACKING ; PACIFIC ; SYSTEM ; TEMPERATURE ; SEASONALITY ; SIMULATION |
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/20718 |
专题 | 气候变化 |
作者单位 | 1.Pacific Northwest Natl Lab, Richland, WA 99354 USA; 2.Univ Washington, Seattle, WA 98195 USA |
推荐引用方式 GB/T 7714 | Burleyson, Casey D.,Hagos, Samson M.,Feng, Zhe,et al. Large-Scale Environmental Characteristics of MJOs that Strengthen and Weaken over the Maritime Continent[J]. JOURNAL OF CLIMATE,2018,31(14):5731-5748. |
APA | Burleyson, Casey D.,Hagos, Samson M.,Feng, Zhe,Kerns, Brandon W. J.,&Kim, Daehyun.(2018).Large-Scale Environmental Characteristics of MJOs that Strengthen and Weaken over the Maritime Continent.JOURNAL OF CLIMATE,31(14),5731-5748. |
MLA | Burleyson, Casey D.,et al."Large-Scale Environmental Characteristics of MJOs that Strengthen and Weaken over the Maritime Continent".JOURNAL OF CLIMATE 31.14(2018):5731-5748. |
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