Doppler Detection of Hydroxyl Column Abundance in the Middle Atmosphere: 2. Measurement for Three Years and Comparison with a 1D Model |
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| Authors: | N Iwagami S Inomata T Ogawa |
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| Institution: | (1) Department of Earth and Planetary Physics, University of Tokyo, Tokyo, 113, Japan;(2) National Institute for Environmental Studies, Tsukuba, 305, Japan |
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| Abstract: | The hydroxyl column abundance in the middle atmosphere is measured for 3 years in Tokyo by ground-based uv absorption spectroscopy utilizing the Doppler shift of the solar spectrum due to the solar rotation. The diurnal and seasonal variations of the measured column abundance are found to be reproduced qualitatively by a one-dimensional photochemical-diffusive model; however, the measured column abundances are smaller than the calculated by 20 to 30% systematically. |
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| Keywords: | hydroxyl column uv absorptionspectroscopy photochemical model |
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