A layer of ozone detected in the nightside upper atmosphere of Venus

被引:50
|
作者
Montmessin, F. [1 ]
Bertaux, J. -L. [1 ]
Lefevre, F. [1 ]
Marcq, E. [1 ]
Belyaev, D. [1 ,2 ]
Gerard, J-C [3 ]
Korablev, O. [2 ]
Fedorova, A. [2 ]
Sarago, V. [1 ]
Vandaele, A. C. [4 ]
机构
[1] UVSQ CNRS IPSL, LATMOS, F-78280 Guyancourt, France
[2] Space Res Inst IKI, Moscow 117997, Russia
[3] Univ Liege, LPAP, B-4000 Liege, Belgium
[4] IASB BIRA, B-1180 Brussels, Belgium
关键词
Atmospheres; Chemistry; Composition; Occultations; Venus; Atmosphere; Spectroscopy; O-2;
D O I
10.1016/j.icarus.2011.08.010
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
To date, ozone has only been identified in the atmospheres of Earth and Mars. This study reports the first detection of ozone in the atmosphere of Venus by the SPICAV ultraviolet instrument onboard the Venus Express spacecraft. Venusian ozone is characterized by a vertically confined and horizontally variable layer residing in the thermosphere at a mean altitude of 100 km. with local concentrations of the order of 10(7)-10(8) molecules cm(-3). The observed ozone concentrations are consistent with values expected for a chlorine-catalyzed destruction scheme, indicating that the key chemical reactions operating in Earth's upper stratosphere may also operate on Venus. (C) 2011 Elsevier Inc. All rights reserved.
引用
收藏
页码:82 / 85
页数:4
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