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DOI | 10.1175/JAS-D-17-0068.1 |
Upscale Impact of Mesoscale Disturbances of Tropical Convection on Synoptic-Scale Equatorial Waves in Two-Dimensional Flows | |
Yang, Qiu1; Majda, Andrew J. | |
2017-09-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES
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ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2017 |
卷号 | 74期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; U Arab Emirates |
英文摘要 | Superclusters on the synoptic scale containing mesoscale systems are frequently organized by convectively coupled equatorial waves (CCEWs). Present-day global models struggle to simulate multiscale tropical convection, and the upscale effects of mesoscale systems are not well understood. A simple two-dimensional multiscale model with prescribed two-scale heating and eddy transfer of momentum and temperature drives the synoptic-scale circulation, successfully reproduces key features of flow fields with a front-to-rear tilt, and compares well with results from a cloud-resolving model (CRM). In the scenario with an elevated upright mean heating, the tilted vertical structure of synoptic-scale circulation is still induced by the upscale impact of mesoscale disturbances. In a faster propagation scenario, the upscale impact becomes less important as a result of competing effects of eddy transfer of momentum and temperature, while the synoptic-scale circulation response to mean heating dominates, in agreement with cloud-resolving models. In the unrealistic scenario with upward-westward-tilted mesoscale heating, positive potential temperature anomalies are induced in the leading edge, which will suppress shallow convection in a moist environment. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000409847100021 |
WOS关键词 | SIMPLE MULTICLOUD PARAMETERIZATION ; MADDEN-JULIAN OSCILLATION ; TOGA COARE IOP ; MOMENTUM TRANSPORT ; COUPLED WAVES ; INTRASEASONAL IMPACT ; ORGANIZED CONVECTION ; MULTISCALE MODELS ; DIURNAL CYCLE ; PART II |
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/29407 |
专题 | 地球科学 |
作者单位 | 1.NYU, Dept Math, New York, NY 10003 USA; 2.NYU, Courant Inst Math Sci, Ctr Atmosphere Ocean Sci, New York, NY 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 | Yang, Qiu,Majda, Andrew J.. Upscale Impact of Mesoscale Disturbances of Tropical Convection on Synoptic-Scale Equatorial Waves in Two-Dimensional Flows[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2017,74(9). |
APA | Yang, Qiu,&Majda, Andrew J..(2017).Upscale Impact of Mesoscale Disturbances of Tropical Convection on Synoptic-Scale Equatorial Waves in Two-Dimensional Flows.JOURNAL OF THE ATMOSPHERIC SCIENCES,74(9). |
MLA | Yang, Qiu,et al."Upscale Impact of Mesoscale Disturbances of Tropical Convection on Synoptic-Scale Equatorial Waves in Two-Dimensional Flows".JOURNAL OF THE ATMOSPHERIC SCIENCES 74.9(2017). |
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