Analysis on the global morphology of middle atmospheric gravity waves
文献类型：期刊论文
| 作者 | Zhang Yun1,2; Xiong Jian-Gang1; Wan Wei-Xing1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2011-07-01 |
| 卷号 | 54期号:7页码:1711-1717 |
| 关键词 | Gravity wave Middle atmosphere SABER/TIMED Temperature perturbation |
| ISSN号 | 0001-5733 |
| DOI | 10.3969/j.issn.0001-5733.2011.07.003 |
| 文献子类 | Article |
| 英文摘要 | Using the temperature profiles obtained by the SABER/TIMED experiment from January 2002 to December 2009, we have extracted mesoscale temperature perturbations with vertical wavelengths ranging from 2 to 10 km. Global distribution of middle atmospheric gravity wave activity is revealed by observing the temperature perturbations. Gravity wave fluctuations in summer and winter are stronger than those in spring and autumn. Comparing with the values in winter, the disturbances' intensity in summer is weaker below 70 km, but it becomes stronger above 70 km. The larger gravity waves appear in winter hemisphere and in the tropics between 25 degrees N and 25 degrees S. Meanwhile, the perturbation peak points in the tropics move northward as the altitudes become larger. Furthermore, the wave is slightly larger at the edge of the Antarctic polar vortex. They also appear to vary with longitude at tropical latitudes, which may be resulted from wind filtering, topography, planetary wave modulations and other factors together. Moreover, gravity wave disturbance intensity changes with height. It indicates a decrease at 25 similar to 30 km and an increase above 42 km. Comparing the average distribution of gravity waves of eight years at different heights, we can see that the strength of gravity waves is related to topography obviously at lower altitudes, but the relationship is not significant at higher altitudes. It indicates that the formation of gravity waves is closely correlated with topography, but in the process of propagation the distribution of gravity waves significantly changes with altitudes. |
| WOS关键词 | LATITUDINAL VARIATIONS ; STRATOSPHERE ; SATELLITE ; VARIANCE |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000293366800003 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/74266]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhang Yun |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang Yun,Xiong Jian-Gang,Wan Wei-Xing. Analysis on the global morphology of middle atmospheric gravity waves[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2011,54(7):1711-1717. |
| APA | Zhang Yun,Xiong Jian-Gang,&Wan Wei-Xing.(2011).Analysis on the global morphology of middle atmospheric gravity waves.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,54(7),1711-1717. |
| MLA | Zhang Yun,et al."Analysis on the global morphology of middle atmospheric gravity waves".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 54.7(2011):1711-1717. |
入库方式： OAI收割
来源：地质与地球物理研究所
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