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DOI | 10.1029/2019GL084759 |
Quasi-Biennial Oscillation of Short-Period Planetary Waves and Polar Night Jet in Winter Antarctica Observed in SABER and MERRA-2 and Mechanism Study With a Quasi-Geostrophic Model | |
Lu, Xian1; Wu, Haonan1; Chu, Xinzhao2,3; Oberheide, Jens1; Mlynczak, Martin G.4; Russell, James M., III5 | |
2019-11-22 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:22页码:13526-13534 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Analyzing Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) observations from 2003 to 2018, the interannual variability of 2-5d eastward propagating planetary waves is found to correlate positively with zonal-mean zonal winds averaged over 67.5 degrees +/- 10 degrees S but negatively with the quasi-biennial oscillation (QBO) index in austral winter. The composite-mean wave amplitudes are 20% larger in QBOe than in QBOw. On statistical average, the poleward flank strengthening and the equatorward flank weakening of polar night jet (PNJ) during QBOe form a dipole-cell pattern. In contrast, only a single negative cell is seen in the Northern Hemisphere zonal-mean zonal winds (January) previously explained by the Holton-Tan theory. Such difference implies an interhemispheric asymmetry and other processes needed to explain the additional positive cell in Antarctica. Mechanistic modeling illustrates that the stronger PNJ generates eastward propagating planetary waves with larger growth rates (stronger waves) in QBOe than QBOw, explaining the QBO-like signal in the Antarctic planetary waves. |
英文关键词 | Antarctic planetary waves Quasi-Biennial Oscillation Polar night jet SABER Quasi-geostrophic model MERRA-2 |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000497910900001 |
WOS关键词 | 4-DAY WAVE ; STRATOSPHERE ; CIRCULATION ; MESOSPHERE ; INSTABILITY ; ATMOSPHERE ; MODULATION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/225080 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA; 2.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA; 3.Univ Colorado, Dept Aerosp Engn Sci, Boulder, CO 80309 USA; 4.NASA, Langley Res Ctr, Hampton, VA 23665 USA; 5.Hampton Univ, Ctr Atmospher Sci, Hampton, VA 23668 USA |
推荐引用方式 GB/T 7714 | Lu, Xian,Wu, Haonan,Chu, Xinzhao,et al. Quasi-Biennial Oscillation of Short-Period Planetary Waves and Polar Night Jet in Winter Antarctica Observed in SABER and MERRA-2 and Mechanism Study With a Quasi-Geostrophic Model[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(22):13526-13534. |
APA | Lu, Xian,Wu, Haonan,Chu, Xinzhao,Oberheide, Jens,Mlynczak, Martin G.,&Russell, James M., III.(2019).Quasi-Biennial Oscillation of Short-Period Planetary Waves and Polar Night Jet in Winter Antarctica Observed in SABER and MERRA-2 and Mechanism Study With a Quasi-Geostrophic Model.GEOPHYSICAL RESEARCH LETTERS,46(22),13526-13534. |
MLA | Lu, Xian,et al."Quasi-Biennial Oscillation of Short-Period Planetary Waves and Polar Night Jet in Winter Antarctica Observed in SABER and MERRA-2 and Mechanism Study With a Quasi-Geostrophic Model".GEOPHYSICAL RESEARCH LETTERS 46.22(2019):13526-13534. |
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