Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD026998 |
A Climatological Study of Short-Period Gravity Waves and Ripples at Davis Station, Antarctica (68 degrees S, 78 degrees E), During the (Austral Winter February-October) Period 1999-2013 | |
Rourke, S.1; Mulligan, F. J.1; French, W. J. R.2; Murphy, D. J.2 | |
2017-11-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
![]() |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:21 |
文章类型 | Article |
语种 | 英语 |
国家 | Ireland; Australia |
英文摘要 | A scanning radiometer deployed at Davis Station, Antarctica (68 degrees S, 78 degrees E), has been recording infrared (1.10-1.65 mu m) images of a small region (24 km x 24 km) of the zenith night sky once per minute each austral winter night since February 1999. These images have been processed to extract information on the passage of gravity waves (GWs) (horizontal wavelength, lambda(h) > 15 km) and ripples (lambda(h) <= 15 km) over the observing station. Phase speeds, periods, horizontal wavelengths, and predominant propagation directions have been deduced. Observed speeds were found to be highly correlated with horizontal wavelengths as has been reported in previous studies. Reverse ray tracing of the detected GWs only enabled us to identify four distinct groups. On average, only 15% of waves detected can be traced back to the troposphere, and a large proportion (similar to 45%) were not successfully reverse traced substantially below the airglow layer. Two smaller groups were found to reach a termination condition for reverse ray tracing at altitudes near 50 km and 75 km. Of those that reached the termination altitude in the troposphere (10 km), most of the end points fell within a radius of 300 km of the station, with a very pronounced concentration of wave initiation to the northwest of the observing point. The predominant direction of propagation was southward, and they were observed throughout the year. Recent reports suggest the interaction of planetary waves with the background wind field as a potential source for these waves. |
英文关键词 | gravity waves mesopause Antarctica |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000417195500020 |
WOS关键词 | RADIOSONDE OBSERVATIONS ; MIDDLE ATMOSPHERE ; OH AIRGLOW ; SEASONAL-VARIATIONS ; CLIMATE MODELS ; MF RADAR ; LIDAR ; NIGHTGLOW ; IMAGERS ; 69-DEGREES-S |
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/32856 |
专题 | 气候变化 |
作者单位 | 1.Natl Univ Ireland, Dept Expt Phys, Maynooth, Kildare, Ireland; 2.Australian Antarctic Div, Kingston, Tas, Australia |
推荐引用方式 GB/T 7714 | Rourke, S.,Mulligan, F. J.,French, W. J. R.,et al. A Climatological Study of Short-Period Gravity Waves and Ripples at Davis Station, Antarctica (68 degrees S, 78 degrees E), During the (Austral Winter February-October) Period 1999-2013[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(21). |
APA | Rourke, S.,Mulligan, F. J.,French, W. J. R.,&Murphy, D. J..(2017).A Climatological Study of Short-Period Gravity Waves and Ripples at Davis Station, Antarctica (68 degrees S, 78 degrees E), During the (Austral Winter February-October) Period 1999-2013.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(21). |
MLA | Rourke, S.,et al."A Climatological Study of Short-Period Gravity Waves and Ripples at Davis Station, Antarctica (68 degrees S, 78 degrees E), During the (Austral Winter February-October) Period 1999-2013".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.21(2017). |
条目包含的文件 | 条目无相关文件。 |
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