| タイトル | Mesospheric ozone changes associated with 27-day solar ultraviolet flux variations |
| 著者（英） | Aikin, A. C.; Smith, H. J. P. |
| 著者所属（英） | Visidyne, Inc.|NASA Goddard Space Flight Center |
| 発行日 | 1986-05-01 |
| 言語 | eng |
| 内容記述 | Solar ultraviolet flux changes associated with the 27-day solar rotational period cause corresponding variations in mesospheric ozone near the maximum of the 11-year sunspot cycle. This statement is based on a correlation and spectral analysis of ozone mixing ratios, deduced from Solar Mesospheric explorer satellite-based measurements of 1.27-micron O2 airglow emission and solar flux observations made from the same spacecraft in 1982. With the Lyman-alpha flux taken as an indicator of solar ultraviolet variability, spectral analysis shows a primary period of 27.1 days with a secondary period of 13.5 days. The 27.1-day period is observed in the ozone mixing ratio data together with other periods, including 13.5 days. Both a classical statistical analysis and a time series treatment show that, for 244 days, there is a correlation between ozone and solar flux near 50 km and between 65 and 70 km. Calculations predict a positive correlation over the entire mesosphere if there is no change in temperature accompanying the solar flux. Lack of correlation is temperature induced. |
| NASA分類 | GEOPHYSICS |
| レポートNO | 86A38639 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/384430 |
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