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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  • [1] Belyaev D(2008)First observations of SO J Geophys Res 113 E00B25-751
  • [2] Korablev O(2012) above Venus’ clouds by means of Solar Occultation in the InfraRed Icarus 217 740-649
  • [3] Frdorova A(2007)Vertical profiling of SO Nature 450 646-57
  • [4] Bertaux J-L(2002) and SO above Venus’ clouds by SPICAV/SOIR solar occultations J Geophys Res 107 5029-1074
  • [5] Vandaele A-C(2011)A warm layer in Venus’ cryosphere and high-altitude measurements of HF, HCl, H Icarus 211 51-1160
  • [6] Montmessin F(1984)O and HDO Science 223 1072-8140
  • [7] Mahieux A(1988)Spatial and temporal variations of Venus haze properties obtained from Pioneer Venus Orbiter polarimetry J Geophys Res 93 5267-183
  • [8] Wilquet V(1974)Scattering particles in nightside limb observations of Venus’ upper atmosphere by Venus Express VIRTIS J Atmos Sci 31 1137-170
  • [9] Drummond R(1980)Sulfur dioxide: episodic injection shows evidence for active Venus Volcanism J Geophys Res 85 8129-2265
  • [10] Belyaev D(2015)Sulfur dioxide at the Venus cloud tops, 1978–1986 Planet Space Sci 113–114 169-2014
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