DOI: 10.1002/2015GL063323
论文题名: SMILES observations of mesospheric ozone during the solar eclipse
作者: Imai K. ; Imamura T. ; Takahashi K. ; Akiyoshi H. ; Yamashita Y. ; Suzuki M. ; Ebisawa K. ; Shiotani M.
刊名: Geophysical Research Letters
ISSN: 0094-9195
EISSN: 1944-8926
出版年: 2015
卷: 42, 期: 9 起始页码: 3576
结束页码: 3582
语种: 英语
英文关键词: mesosphere
; ozone
; photochemistry
; SMILES
; solar eclipse
Scopus关键词: Chemical reactions
; Ionosphere
; Photochemical reactions
; Solar radiation
; Submillimeter waves
; Sun
; Analytical expressions
; Mesosphere
; Mesospheric ozone
; Middle atmosphere
; SMILES
; Solar eclipse
; Temporal variation
; Vertical distributions
; Ozone
; atmospheric chemistry
; concentration (composition)
; mesosphere
; ozone
; photochemistry
; solar eclipse
; vertical distribution
英文摘要: The Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES) successfully observed vertical distributions of ozone (O3 ) concentration in the middle atmosphere during the annular solar eclipse that occurred on 15 January 2010. In the mesosphere, where the photochemical lifetime of O3 is relatively short (approximately 100s), altitude-dependent changes in O3 concentration under reduced solar radiation and their temporal variations were clearly observed as a function of the eclipse obscuration. This study reports the vertical distributions of mesospheric O3 during a solar eclipse event and analyzes theoretically the eclipse-induced changes. We show that simple analytical expressions for O3 concentration, which assume that O3 and O are in a photochemically steady state, can be used to describe the O3 concentration under reduced solar radiation. The SMILES data obtained during the eclipse provide a unique opportunity to test our current understanding of mesospheric O3 photochemistry. Key Points SMILES successfully observed mesospheric ozone variations in a solar eclipse The eclipse-induced changes in ozone concentration show the altitude dependence We discuss the daytime mesospheric chemistry based on the observed profiles ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930481822&doi=10.1002%2f2015GL063323&partnerID=40&md5=d2283af7e7ce76d8775d665849316d28
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8811
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
Recommended Citation:
Imai K.,Imamura T.,Takahashi K.,et al. SMILES observations of mesospheric ozone during the solar eclipse[J]. Geophysical Research Letters,2015-01-01,42(9).