Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-19-0151.1 |
The Buffer Zone of the Quasi-Biennial Oscillation | |
Match, Aaron1; Fueglistaler, Stephan1,2 | |
2019-11-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES
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ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2019 |
卷号 | 76期号:11页码:3553-3567 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The quasi-biennial oscillation (QBO) is a descending pattern of winds in the stratosphere that vanishes near the top of the tropical tropopause layer, even though the vertically propagating waves that drive the QBO are thought to originate in the troposphere several kilometers below. The region where there is low QBO power despite sufficient vertically propagating wave activity to drive a QBO is known as the buffer zone. Classical one-dimensional models of the QBO are ill suited to represent buffer zone dynamics because they enforce the attenuation of the QBO via a zero-wind lower boundary condition. The formation of the buffer zone is investigated by analyzing momentum budgets in the reanalyses MERRA-2 and ERA-Interim. The buffer zone must be formed by weak wave-driven acceleration and/or cancellation of the wave-driven acceleration. This paper shows that in MERRA-2 weak wave-driven acceleration is insufficient to form the buffer zone, so cancellation of the wave-driven acceleration must play a role. The cancellation results from damping of angular momentum anomalies, primarily due to horizontal mean and horizontal eddy momentum flux divergence, with secondary contributions from the Coriolis torque and vertical mean momentum flux divergence. The importance of the damping terms highlights the role of the buffer zone as the mediator of angular momentum exchange between the QBO domain and the far field. Some far-field angular momentum anomalies reach the solid Earth, leading to the well-documented lagged correlation between the QBO and the length of day. |
英文关键词 | Quasibiennial oscillation Stratospheric circulation Stratosphere-troposphere coupling Tropopause Angular momentum Reanalysis data |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000494455100002 |
WOS关键词 | WAVE DRAG PARAMETERIZATION ; MADDEN-JULIAN OSCILLATION ; GRAVITY-WAVE ; LOWER STRATOSPHERE ; MOIST CONVECTION ; MINIMAL MODEL ; WATER-VAPOR ; CIRCULATION ; QBO ; EVOLUTION |
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/225995 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Princeton Univ, Program Atmospher & Ocean Sci, Princeton, NJ 08544 USA; 2.Princeton Univ, Dept Geosci, Princeton, NJ 08544 USA |
推荐引用方式 GB/T 7714 | Match, Aaron,Fueglistaler, Stephan. The Buffer Zone of the Quasi-Biennial Oscillation[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2019,76(11):3553-3567. |
APA | Match, Aaron,&Fueglistaler, Stephan.(2019).The Buffer Zone of the Quasi-Biennial Oscillation.JOURNAL OF THE ATMOSPHERIC SCIENCES,76(11),3553-3567. |
MLA | Match, Aaron,et al."The Buffer Zone of the Quasi-Biennial Oscillation".JOURNAL OF THE ATMOSPHERIC SCIENCES 76.11(2019):3553-3567. |
条目包含的文件 | 条目无相关文件。 |
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