Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016JD026217 |
Characteristics of mesospheric gravity waves over Antarctica observed by Antarctic Gravity Wave Instrument Network imagers using 3-D spectral analyses | |
Matsuda, Takashi S.1,2; Nakamura, Takuji1,2; Ejiri, Mitsumu K.1,2; Tsutsumi, Masaki1,2; Tomikawa, Yoshihiro1,2; Taylor, Michael J.3; Zhao, Yucheng3; Pautet, P. -Dominique3; Murphy, Damian J.4; Moffat-Griffin, Tracy5 | |
2017-09-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
![]() |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:17 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; USA; Australia; England |
英文摘要 | We have obtained horizontal phase velocity distributions of the gravity waves around 90 km from four Antarctic airglow imagers, which belong to an international airglow imager/instrument network known as ANGWIN (Antarctic Gravity Wave Instrument Network). Results from the airglow imagers at Syowa (69 degrees S, 40 degrees E), Halley (76 degrees S, 27 degrees W), Davis (69 degrees S, 78 degrees E), and McMurdo (78 degrees S, 167 degrees E) were compared, using a new statistical analysis method based on 3-D Fourier transform (Matsuda et al., 2014) for the observation period between 7 April and 21 May 2013. Significant day-to-day and site-to-site differences were found. The averaged phase velocity spectrum during the observation period showed preferential westward direction at Syowa, McMurdo, and Halley, but no preferential direction at Davis. Gravity wave energy estimated by I'/I was similar to 5 times larger at Davis and Syowa than at McMurdo and Halley. We also compared the phase velocity spectrum at Syowa and Davis with the background wind field and found that the directionality only over Syowa could be explained by critical level filtering of the waves. This suggests that the eastward propagating gravity waves over Davis could have been generated above the polar night jet. Comparison of nighttime variations of the phase velocity spectra with background wind measurements suggested that the effect of critical level filtering could not explain the temporal variation of gravity wave directionality well, and other reasons such as variation of wave sources should be taken into account. Directionality was determined to be dependent on the gravity wave periods. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416387300001 |
WOS关键词 | OH AIRGLOW ; MIDDLE ; ATMOSPHERE |
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/32673 |
专题 | 气候变化 |
作者单位 | 1.Grad Univ Adv Studies, Tachikawa, Tokyo, Japan; 2.Natl Inst Polar Res, Tachikawa, Tokyo, Japan; 3.Utah State Univ, Phys Dept, Logan, UT 84322 USA; 4.Australian Antarctic Div, Kingston, Tas, Australia; 5.British Antarctic Survey, Cambridge, England |
推荐引用方式 GB/T 7714 | Matsuda, Takashi S.,Nakamura, Takuji,Ejiri, Mitsumu K.,et al. Characteristics of mesospheric gravity waves over Antarctica observed by Antarctic Gravity Wave Instrument Network imagers using 3-D spectral analyses[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(17). |
APA | Matsuda, Takashi S..,Nakamura, Takuji.,Ejiri, Mitsumu K..,Tsutsumi, Masaki.,Tomikawa, Yoshihiro.,...&Moffat-Griffin, Tracy.(2017).Characteristics of mesospheric gravity waves over Antarctica observed by Antarctic Gravity Wave Instrument Network imagers using 3-D spectral analyses.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(17). |
MLA | Matsuda, Takashi S.,et al."Characteristics of mesospheric gravity waves over Antarctica observed by Antarctic Gravity Wave Instrument Network imagers using 3-D spectral analyses".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.17(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