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DOI | 10.1029/2017JD027998 |
A Statistical Study of Inertia Gravity Waves in the Lower Stratosphere Over the Arctic Region Based on Radiosonde Observations | |
Huang, Kai Ming1,2,3,4; Yang, Zun Xun1,3; Wang, Rui5; Zhang, Shao Dong1,3; Huang, Chun Ming1,3; Yi, Fan1,3,4; Hu, Fei1,3 | |
2018-05-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:10页码:4958-4976 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Relative to many investigations of inertial gravity waves (IGWs) in the Antarctic, IGW activity in the Arctic region was paid less attention to. We use radiosonde observations at the Ny-Alesund station (78.9 degrees N, 11.9 degrees E) from April 2012 to June 2016 to study the IGW characteristics in the lower stratosphere over the Arctic. The observation reveals a prevailing eastward zonal background wind below 20km and an obvious annual cycle of the background temperature from the troposphere to the lower stratosphere, which is different from the results in the middle and low latitudes. By combining Lomb-Scargle spectrum and hodograph technique, case study demonstrates that the lower stratospheric IGWs exhibit a feature of freely propagating waves. Statistical analysis indicates that the IGWs have dominant horizontal (vertical) wavelength of 50-1,050km (1-4km) and ratio (1-2.5) of the intrinsic to inertia frequencies. Wave energy exhibits an annual oscillation with the maximum in winter and the minimum in summer. In winter, the downward propagating waves increase to about 20% due to polar stratospheric vortex. Because of the lower atmospheric filtering, the IGWs display a dominant direction of westward propagation, thus have a mean vertical flux of -0.647mPa for the zonal momentum, which indicates that the IGWs can put a westward drag on the atmospheric wind field over the Arctic as they break and dissipate. All the vertical wavenumber spectra have spectral slopes from -2.23 to -2.99 close to the universal spectrum index of -3. |
英文关键词 | IGWs the Arctic |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000435445600011 |
WOS关键词 | MIDDLE-ATMOSPHERE ; LIDAR OBSERVATIONS ; SPECTRAL-ANALYSIS ; MESOPAUSE REGION ; MOMENTUM FLUX ; NA LIDAR ; FREQUENCY ; SATELLITE ; RADAR ; AIRS |
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/33139 |
专题 | 气候变化 |
作者单位 | 1.Wuhan Univ, Sch Elect Informat, Wuhan, Hubei, Peoples R China; 2.Univ Sci & Technol China, Chinese Acad Sci, Key Lab Geospace Environm, Hefei, Anhui, Peoples R China; 3.Minist Educ, Key Lab Geospace Environm & Geodesy, Wuhan, Hubei, Peoples R China; 4.State Observ Atmospher Remote Sensing, Wuhan, Hubei, Peoples R China; 5.Polar Res Inst China, SOA Key Lab Polar Sci, Shanghai, Peoples R China |
推荐引用方式 GB/T 7714 | Huang, Kai Ming,Yang, Zun Xun,Wang, Rui,et al. A Statistical Study of Inertia Gravity Waves in the Lower Stratosphere Over the Arctic Region Based on Radiosonde Observations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(10):4958-4976. |
APA | Huang, Kai Ming.,Yang, Zun Xun.,Wang, Rui.,Zhang, Shao Dong.,Huang, Chun Ming.,...&Hu, Fei.(2018).A Statistical Study of Inertia Gravity Waves in the Lower Stratosphere Over the Arctic Region Based on Radiosonde Observations.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(10),4958-4976. |
MLA | Huang, Kai Ming,et al."A Statistical Study of Inertia Gravity Waves in the Lower Stratosphere Over the Arctic Region Based on Radiosonde Observations".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.10(2018):4958-4976. |
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