Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD028306 |
Simulations of Zonal Mean Gravity Wave Drag Short-Term Variability in the Southern Hemisphere Mesosphere | |
Pedatella, N. M.1,2; Smith, A. K.3; Liu, H. -L.1 | |
2018-11-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:21页码:11849-11860 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Whole Atmosphere Community Climate Model simulations are used to investigate the short-term (<30-day) temporal variability in the midlatitude and high-latitude Southern Hemisphere mesosphere. We focus primarily on the short-term variability in zonal mean gravity wave drag and its influence on the mesosphere circulation and chemistry. The seasonal climatology from 36 years (1979-2014) of specified dynamics Whole Atmosphere Community Climate Model simulations reveals that the short-term variability of zonal mean gravity wave drag, which is quantified by the standard deviation over a 30-day window, in the Southern Hemisphere midlatitude mesosphere maximizes during December to March and September to November. The December to March enhancement is related to interhemispheric coupling during Northern Hemisphere sudden stratospheric warming events, and the enhancement during September to November is attributed to variability in the stratosphere and lower mesosphere zonal mean zonal winds that is driven by planetary wave activity in the Southern Hemisphere. Analysis of the simulations demonstrates that the short-term variability in mesospheric gravity wave drag leads to changes in the residual circulation, which subsequently introduces short-term variability in atomic oxygen (O) and nitrogen oxides (NOx). Comparison with the Northern Hemisphere reveals that the zonal mean short-term variability in the Southern Hemisphere during September to November is nearly as large (similar to 80-85%) as the maximum short-term variability in the Northern Hemisphere, which occurs during December to March. This demonstrates that although the Southern Hemisphere middle atmosphere is generally considered to be less disturbed than the Northern Hemisphere, there is still substantial short-term variability in the Southern Hemisphere mesosphere. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000452001400004 |
WOS关键词 | GENERAL-CIRCULATION ; MIDDLE ATMOSPHERE ; PARAMETERIZATION ; MODEL ; THERMOSPHERE ; CLIMATOLOGY ; WINDS ; CYCLE |
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/33927 |
专题 | 气候变化 |
作者单位 | 1.Natl Ctr Atmospher Res, High Altitude Observ, Pob 3000, Boulder, CO 80307 USA; 2.Univ Corp Atmospher Res, COSMIC Program Off, Boulder, CO 80307 USA; 3.Natl Ctr Atmospher Res, Atmosphere Chem Observat & Modeling, POB 3000, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Pedatella, N. M.,Smith, A. K.,Liu, H. -L.. Simulations of Zonal Mean Gravity Wave Drag Short-Term Variability in the Southern Hemisphere Mesosphere[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(21):11849-11860. |
APA | Pedatella, N. M.,Smith, A. K.,&Liu, H. -L..(2018).Simulations of Zonal Mean Gravity Wave Drag Short-Term Variability in the Southern Hemisphere Mesosphere.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(21),11849-11860. |
MLA | Pedatella, N. M.,et al."Simulations of Zonal Mean Gravity Wave Drag Short-Term Variability in the Southern Hemisphere Mesosphere".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.21(2018):11849-11860. |
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