2015年11月
Zonally uniform tidal oscillations in the tropical stratosphere
GEOPHYSICAL RESEARCH LETTERS
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- 巻
- 42
- 号
- 21
- 開始ページ
- 9553
- 終了ページ
- 9560
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1002/2015GL066054
- 出版者・発行元
- AMER GEOPHYSICAL UNION
By analyzing data from satellite measurements, a reanalysis, and a chemistry-climate model, we found clear zonally uniform tidal signals in the tropical stratosphere, particularly during the Northern Hemisphere summer. Antisymmetric components with respect to the equator are dominant and are characterized by a vertical wavelength of similar to 15 km and a diurnal frequency. The temperature and vertical wind diurnal amplitudes in the stratosphere are 0.2-1 K and 1-7 mm s(-1), respectively. The latter is generally larger than the climatological ascent motion in the stratosphere. The observed latitudinal and vertical structures can be explained by the second, propagating, antisymmetric Hough mode. These tidal oscillations should be carefully considered in analyses of zonal mean fields at a particular universal time.
- リンク情報
- ID情報
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- DOI : 10.1002/2015GL066054
- ISSN : 0094-8276
- eISSN : 1944-8007
- Web of Science ID : WOS:000368336800096