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DOI | 10.1175/JAS-D-18-0179.1 |
The Impact of the QBO on MJO Convection in Cloud-Resolving Simulations | |
Martin, Zane1; Wang, Shuguang1; Nie, Ji2; Sobel, Adam1,3 | |
2019-03-01 | |
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:3页码:669-688 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | This study examines the relationship between the Madden-Julian oscillation (MJO) and the stratospheric quasi-biennial oscillation (QBO) in a limited-area cloud-resolving model with parameterized large-scale dynamics. The model is used to simulate two consecutive MJO events that occurred during the late fall and early winter of 2011. To test the influence of the QBO on the simulated MJO events, various QBO states are imposed via the addition of characteristic wind and temperature anomalies. In experiments with only QBO temperature anomalies imposed (without corresponding zonal wind anomalies) the strength of convection during MJO active phases is amplified for the QBO easterly phase [an anomalously cold tropical tropopause layer (TTL)] compared to the westerly QBO phase (a warm TTL), as measured by outgoing longwave radiation, cloud fraction, and large-scale ascent. This response is qualitatively consistent with the observed MJO-QBO relationship. The response of precipitation is weaker, and is less consistent across variations in the simulation configuration. Experiments with only imposed QBO wind anomalies (without corresponding temperature anomalies) show much weaker effects altogether than those with imposed temperature anomalies, suggesting that TTL temperature anomalies are a key pathway through which the QBO can modulate the MJO. Sensitivity tests indicate that the QBO influence on MJO convection depends on both the amplitude and the height of the QBO temperature anomaly: lower-altitude and larger-amplitude temperature anomalies have more pronounced effects on MJO convection. |
英文关键词 | Atmosphere Tropics Madden-Julian oscillation Quasibiennial oscillation Cloud resolving models |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000459006400001 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; QUASI-BIENNIAL OSCILLATION ; VERTICAL STRUCTURE ; GRAVITY-WAVES ; INTRASEASONAL VARIABILITY ; STRATOSPHERIC QBO ; ENERGY BUDGET ; TOGA COARE ; MODEL ; PRECIPITATION |
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/29412 |
专题 | 地球科学 |
作者单位 | 1.Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA; 2.Peking Univ, Dept Atmospher & Ocean Sci, Beijing, Peoples R China; 3.Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY USA |
推荐引用方式 GB/T 7714 | Martin, Zane,Wang, Shuguang,Nie, Ji,et al. The Impact of the QBO on MJO Convection in Cloud-Resolving Simulations[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2019,76(3):669-688. |
APA | Martin, Zane,Wang, Shuguang,Nie, Ji,&Sobel, Adam.(2019).The Impact of the QBO on MJO Convection in Cloud-Resolving Simulations.JOURNAL OF THE ATMOSPHERIC SCIENCES,76(3),669-688. |
MLA | Martin, Zane,et al."The Impact of the QBO on MJO Convection in Cloud-Resolving Simulations".JOURNAL OF THE ATMOSPHERIC SCIENCES 76.3(2019):669-688. |
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