Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-18-0263.1 |
A Tropical Stochastic Skeleton Model for the MJO, El Nino, and Dynamic Walker Circulation: A Simplified GCM | |
Thual, Sulian1,2; Majda, Andrew J.1,2,3; Chen, Nan1,2 | |
2018-11-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:22页码:9261-9282 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; U Arab Emirates |
英文摘要 | A simple dynamical stochastic model for the tropical ocean atmosphere is proposed that captures qualitatively major intraseasonal to interannual processes altogether including El Nino-Southern Oscillation (ENSO), the Madden-Julian oscillation (MJO), the associated wind bursts, and the background dynamic Walker circulation. Such a model serves as a prototype skeleton for general circulation models (GCMs) that solve similar dynamical interactions across several spatiotemporal scales but usually show common and systematic biases in representing tropical variability as a whole. The most salient features of ENSO, the wind bursts, and the MJO are captured altogether including their overall structure, evolution, and fundamental interactions in addition to their intermittency, diversity, and energy distribution across scales. Importantly, the intraseasonal wind bursts and the MJO are here solved dynamically, which provides their upscale contribution to the interannual flow as well as their modulation in return in a more explicit way. This includes a realistic onset of El Nino events with increased wind bursts and MJO activity starting in the Indian Ocean to the western Pacific and expanding eastward toward the central Pacific, as well as significant interannual modulation of the characteristics of intraseasonal variability. A hierarchy of cruder model versions is also analyzed in order to highlight fundamental concepts related to the treatment of multiple time scales, main convective nonlinearities, and the associated stochastic convective parameterizations. The model developed here also should be useful to diagnose, analyze, and help eliminate the strong tropical biases that exist in current operational models. |
英文关键词 | Atmosphere-ocean interaction ENSO Madden-Julian oscillation Statistical techniques Stochastic models |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447966500001 |
WOS关键词 | WESTERLY WIND BURSTS ; MADDEN-JULIAN OSCILLATION ; SEA-SURFACE TEMPERATURE ; INTRASEASONAL VARIABILITY ; CLIMATE MODELS ; ENSO ; PACIFIC ; MODULATION ; DEPENDENCE ; ANOMALIES |
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/19534 |
专题 | 气候变化 |
作者单位 | 1.NYU, Courant Inst Math Sci, Dept Math, New York, NY 10003 USA; 2.NYU, Courant Inst Math Sci, Ctr Atmosphere Ocean Sci, New York, NY 10003 USA; 3.New York Univ Abu Dhabi, Ctr Prototype Climate Modeling, Abu Dhabi, U Arab Emirates |
推荐引用方式 GB/T 7714 | Thual, Sulian,Majda, Andrew J.,Chen, Nan. A Tropical Stochastic Skeleton Model for the MJO, El Nino, and Dynamic Walker Circulation: A Simplified GCM[J]. JOURNAL OF CLIMATE,2018,31(22):9261-9282. |
APA | Thual, Sulian,Majda, Andrew J.,&Chen, Nan.(2018).A Tropical Stochastic Skeleton Model for the MJO, El Nino, and Dynamic Walker Circulation: A Simplified GCM.JOURNAL OF CLIMATE,31(22),9261-9282. |
MLA | Thual, Sulian,et al."A Tropical Stochastic Skeleton Model for the MJO, El Nino, and Dynamic Walker Circulation: A Simplified GCM".JOURNAL OF CLIMATE 31.22(2018):9261-9282. |
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