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タイトル: | Sunset–sunrise difference in solar occultation ozone measurements (SAGE II, HALOE, and ACE–FTS) and its relationship to tidal vertical winds |
著者: | Sakazaki, Takatoshi https://orcid.org/0000-0003-2044-391X (unconfirmed) Shiotani, M. Suzuki, M. Kinnison, D. Zawodny, J. M. McHugh, M. Walker, K. A. |
著者名の別形: | 坂崎, 貴俊 塩谷, 雅人 |
発行日: | 23-Jan-2015 |
出版者: | Copernicus Publications |
誌名: | Atmospheric Chemistry and Physics |
巻: | 15 |
号: | 2 |
開始ページ: | 829 |
終了ページ: | 843 |
抄録: | This paper contains a comprehensive investigation of the sunset–sunrise difference (SSD, i.e., the sunset-minus-sunrise value) of the ozone mixing ratio in the latitude range of 10° S–10° N. SSD values were determined from solar occultation measurements based on data obtained from the Stratospheric Aerosol and Gas Experiment (SAGE) II, the Halogen Occultation Experiment (HALOE), and the Atmospheric Chemistry Experiment–Fourier transform spectrometer (ACE–FTS). The SSD was negative at altitudes of 20–30 km (−0.1 ppmv at 25 km) and positive at 30–50 km (+0.2 ppmv at 40–45 km) for HALOE and ACE–FTS data. SAGE II data also showed a qualitatively similar result, although the SSD in the upper stratosphere was 2 times larger than those derived from the other data sets. On the basis of an analysis of data from the Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES) and a nudged chemical transport model (the specified dynamics version of the Whole Atmosphere Community Climate Model: SD–WACCM), we conclude that the SSD can be explained by diurnal variations in the ozone concentration, particularly those caused by vertical transport by the atmospheric tidal winds. All data sets showed significant seasonal variations in the SSD; the SSD in the upper stratosphere is greatest from December through February, while that in the lower stratosphere reaches a maximum twice: during the periods March–April and September–October. Based on an analysis of SD–WACCM results, we found that these seasonal variations follow those associated with the tidal vertical winds. |
著作権等: | © Author(s) 2015. This work is distributed under the Creative Commons Attribution 3.0 License. Published by Copernicus Publications on behalf of the European Geosciences Union. |
URI: | http://hdl.handle.net/2433/196050 |
DOI(出版社版): | 10.5194/acp-15-829-2015 |
出現コレクション: | 学術雑誌掲載論文等 |
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