globalchange  > 气候减缓与适应
DOI: 10.1002/2017JE005406
Scopus记录号: 2-s2.0-85040860780
论文题名:
Venus Upper Clouds and the UV Absorber From MESSENGER/MASCS Observations
作者: Pérez-Hoyos S.; Sánchez-Lavega A.; García-Muñoz A.; Irwin P.G.J.; Peralta J.; Holsclaw G.; McClintock W.M.; Sanz-Requena J.F.
刊名: Journal of Geophysical Research: Planets
ISSN: 21699097
出版年: 2018
卷: 123, 期:1
起始页码: 145
结束页码: 162
语种: 英语
英文关键词: atmospheres ; radiative transfer ; spectroscopy ; Venus
Scopus关键词: atmospheric chemistry ; particle motion ; planetary atmosphere ; radiative transfer ; spectral analysis ; ultraviolet radiation ; Venus ; vertical distribution
英文摘要: One of the most intriguing, long-standing questions regarding Venus's atmosphere is the origin and distribution of the unknown UV absorber, responsible for the absorption band detected at the near-UV and blue range of Venus's spectrum. In this work, we use data collected by Mercury Atmospheric and Surface Composition Spectrometer (MASCS) spectrograph on board the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) mission during its second Venus flyby in June 2007 to address this issue. Spectra range from 0.3 μm to 1.5 μm including some gaseous H2O and CO2 bands, as well as part of the SO2 absorption band and the core of the UV absorption. We used the NEMESIS radiative transfer code and retrieval suite to investigate the vertical distribution of particles in the equatorial atmosphere and to retrieve the imaginary refractive indices of the UV absorber, assumed to be well mixed with Venus's small mode 1 particles. The results show a homogeneous equatorial atmosphere, with cloud tops (height for unity optical depth) at 75 ± 2 km above surface. The UV absorption is found to be centered at 0.34 ± 0.03 μm with a full width at half maximum of 0.14 ± 0.01 μm. Our values are compared with previous candidates for the UV aerosol absorber, among which disulfur oxide (S2O) and dioxide disulfur (S2O2) provide the best agreement with our results. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114856
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作者单位: Departamento Física Aplicada I, ETSI, Universidad del País Vasco UPV/EHU, Bilbao, Spain; Zentrum für Astronomie und Astrophysik, Technische Universität Berlin, Berlin, Germany; Department of Physics, Atmospheric, Oceanic and Planetary Physics, University of Oxford, Oxford, United Kingdom; Institute of Space and Astronautical Science (ISAS/JAXA), Sagamihara, Japan; Laboratory for Atmospheric and Space Physics, Boulder, CO, United States; Departamento Ciencias Experimentales, Universidad Europea Miguel de Cervantes, Valladolid, Spain

Recommended Citation:
Pérez-Hoyos S.,Sánchez-Lavega A.,García-Muñoz A.,et al. Venus Upper Clouds and the UV Absorber From MESSENGER/MASCS Observations[J]. Journal of Geophysical Research: Planets,2018-01-01,123(1)
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