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| DOI | 10.1029/2020GL091033 |
| Is Mesospheric Quasi Biennial Oscillation Ephemeral? | |
| Kumar K.K. | |
| 发表日期 | 2021 |
| ISSN | 0094-8276 |
| 卷号 | 48期号:2 |
| 英文摘要 | The time evolution of mesospheric quasi biennial oscillation (MQBO) in the 82–98 km altitude region using long-term meteor radar observations over low and equatorial latitudes and TIMED Doppler Interferometer (TIDI) observations is discussed for the first time. The wavelet spectra of monthly mean zonal winds over Serpog (6.4°S, 106.7°E; 1993–1998), Koto Tabang (0.2°S, 100.3°E; 2003–2012) and Thumba (8.5°N, 76.9°E; 2006–2015) show the transient nature of the MQBO amplitudes, thus, questioning its perpetuity in the mesosphere-lower thermosphere (MLT). The time period of the MQBO as well as its amplitude show variability with time. The latitude-height structures of the MQBO at four time periods (24, 26, 28, and 30 months) are constructed using TIDI measurements, which show diverse latitudinal structure. The significance of the present study lies in bringing out the time evolution of the MQBO and addressing a few outstanding issues on its ephemerality and discrepancies in its amplitudes. © 2020. American Geophysical Union. All Rights Reserved. |
| 英文关键词 | Ionosphere; Altitude regions; Doppler interferometers; Height structure; Latitudinal structures; Mean zonal winds; Mesosphere-lower thermospheres; Quasi-biennial oscillation; Time evolutions; Oscillators (mechanical) |
| 语种 | 英语 |
| 来源期刊 | Geophysical Research Letters
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/169162 |
| 作者单位 | Space Physics Laboratory, Vikram Sarabhai Space Centre, Thiruvananthapuram, Kerala, India |
| 推荐引用方式 GB/T 7714 | Kumar K.K.. Is Mesospheric Quasi Biennial Oscillation Ephemeral?[J],2021,48(2). |
| APA | Kumar K.K..(2021).Is Mesospheric Quasi Biennial Oscillation Ephemeral?.Geophysical Research Letters,48(2). |
| MLA | Kumar K.K.."Is Mesospheric Quasi Biennial Oscillation Ephemeral?".Geophysical Research Letters 48.2(2021). |
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