An uppermost haze layer above 100 km found over Venus by the SOIR instrument onboard Venus Express

被引：0
作者：
Seiko Takagi
Arnaud Mahieux
Valérie Wilquet
Séverine Robert
Ann Carine Vandaele
Naomoto Iwagami
机构：
[1] Hokkaido University,Department of Earth and Planetary Sciences
[2] Faculty of Science,undefined
[3] Belgian Institute for Space Aeronomy,undefined
[4] Fonds National de la Recherche Scientifique,undefined
来源：
Earth, Planets and Space | / 71卷
关键词：
Venus; Cloud; Haze; Atmosphere; Spectroscopy;
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摘要：
The Solar Occultation in the InfraRed (SOIR) instrument onboard Venus Express was designed to measure the Venusian atmospheric transmission at high altitudes (65–220 km) in the infrared range (2.2–4.3 μm) with a high spectral resolution. In this work, we investigate the optical properties of Venus’s haze layer above 90 km using SOIR solar occultation observations. Vertical and latitudinal profiles of the extinction coefficient, optical thickness, and mixing ratio of aerosols are retrieved. One of the most remarkable results is that the aerosol mixing ratio tends to increase with altitude above 90 km at both high and low latitudes. We speculate how aerosols could be produced at such high altitudes. [graphic not available: see fulltext]
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  • [21] Korablev O(2012)A review of selected issues concerning the chemistry in Venus’ middle atmosphere Icarus 217 839-9281
  • [22] Villard E(1996)Compact high-resolution spaceborne echelle grating spectrometer with acousto-optical tunable filter based order sorting for the infrared domain from 2.2 to 4.3 µm Icarus 124 569-780
  • [23] Fedorova A(1985)The HITRAN 2012 molecular spectroscopic database Adv Space Res 5 3-881
  • [24] Fussen D(2007)Upper limits for H Planet Space Sci 55 1636-739
  • [25] Quemerais E(2011)SO Earth Planets Space 63 435-undefined
  • [26] Belyaev D(2016) in the mesosphere of Venus Appl Opt 55 9275-undefined
  • [27] Mahieux A(2008)Photopolarimetry analysis of the Venus atmosphere in polar regions J Geophys Res 113 E00B23-undefined
  • [28] Montmessin F(2013)Models Of the structure of the atmosphere of Venus from the surface to 100 kilometers altitude Opt Express 21 21148-undefined
  • [29] Muller C(1992)Venus express: the first European mission to Venus J Quant Spectrosc Radiat Transfer 48 763-undefined
  • [30] Neefs E(2009)Contrast sources for the infrared images taken by the Venus mission AKATSUKI J Geophys Res 114 E00B42-undefined
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