Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-17-0178.1 |
Upscale Impact of Mesoscale Disturbances of Tropical Convection on Convectively Coupled Kelvin Waves | |
Yang, Qiu1; Majda, Andrew J. | |
2018 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:1页码:85-111 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; U Arab Emirates |
英文摘要 | Tropical convection associated with convectively coupled Kelvin waves (CCKWs) is typically organized by an eastward-moving synoptic-scale convective envelope with numerous embedded westward-moving mesoscale disturbances. Such a multiscale structure of tropical convection is a challenge for present-day cloud-resolving simulations and its representation in global climate models. It is of central importance to assess the upscale impact of mesoscale disturbances onCCKWsasmesoscale disturbances propagate at various tilt angles and speeds. Besides, it is still poorly understood whether the front-to-rear-tilted vertical structure of CCKWs can be induced by the upscale impact of mesoscale disturbances in the presence of upright mean heating. Here, a simple multiscale model is used to capture this multiscale structure, where mesoscale fluctuations are directly driven by mesoscale heating and synoptic-scale circulation is forced by mean heating and eddy transfer of momentum and temperature. The results show that the upscale impact of mesoscale disturbances that propagate at tilt angles of 1108-2508 induces negative lower-tropospheric potential temperature anomalies in the leading edge, providing favorable conditions for shallow convection in a moist environment, while the remaining tilt-angle cases have opposite effects. Even in the presence of uprightmean heating, the front-to-rear-tilted synoptic-scale circulation can still be induced by eddy terms at tilt angles of 1208-2408. In the case with fast-propagating mesoscale heating, positive potential temperature anomalies are induced in the lower troposphere, suppressing convection in a moist environment. This simple model also reproduces convective momentum transport and CCKWs in agreement with results from a recent cloud-resolving simulation. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425750200005 |
WOS关键词 | SIMPLE MULTICLOUD PARAMETERIZATION ; INTERTROPICAL CONVERGENCE ZONE ; MADDEN-JULIAN OSCILLATION ; EQUATORIAL WAVES ; PART II ; STRATIFORM INSTABILITY ; INTRASEASONAL IMPACT ; MULTISCALE MODELS ; DIURNAL CYCLE ; CIRCULATION |
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/29292 |
专题 | 地球科学 |
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 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 Convectively Coupled Kelvin Waves[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(1):85-111. |
APA | Yang, Qiu,&Majda, Andrew J..(2018).Upscale Impact of Mesoscale Disturbances of Tropical Convection on Convectively Coupled Kelvin Waves.JOURNAL OF THE ATMOSPHERIC SCIENCES,75(1),85-111. |
MLA | Yang, Qiu,et al."Upscale Impact of Mesoscale Disturbances of Tropical Convection on Convectively Coupled Kelvin Waves".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.1(2018):85-111. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Yang, Qiu]的文章 |
[Majda, Andrew J.]的文章 |
百度学术 |
百度学术中相似的文章 |
[Yang, Qiu]的文章 |
[Majda, Andrew J.]的文章 |
必应学术 |
必应学术中相似的文章 |
[Yang, Qiu]的文章 |
[Majda, Andrew J.]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论