|
|||||
|
|
Optical extinction due to aerosols in the upper haze of Venus: Four years of SOIR/VEX observations from 2006 to 2010 |
|
| Authors: | Valérie Wilquet Rachel Drummond Arnaud Mahieux Séverine Robert Ann Carine Vandaele Jean-Loup Bertaux |
| Institution: | 1. Belgian Institute for Space Aeronomy, 3 Av. Circulaire, B-1180 Brussels, Belgium;2. LATMOS, 11 Bd d’Alembert, 78280 Guyancourt, France;3. Institut Pierre Simon Laplace, Université de Versailles-Saint-Quentin, 78280 Guyancourt, France;1. Cornell University, Dept of Astronomy, 318 Space Sciences Building, Ithaca, NY, 14853, USA;2. Observatoire de Paris, LESIA, 5 Place Jules Janssen, 92195 Meudon Cedex, France;3. University of Wisconsin-Madison, Space Science and Engineering Center, 1225 West Dayton Street, Madison, WI 53706, USA;4. Jet Propulsion Laboratory, M/S 183-501, 4800 Oak Grove Drive, Pasadena, CA 91109 USA |
| Abstract: | The variability of the aerosol loading in the mesosphere of Venus is investigated from a large data set obtained with SOIR, a channel of the SPICAV instrument suite onboard Venus Express. Vertical profiles of the extinction due to light absorption by aerosols are retrieved from a spectral window around 3.0 μm recorded in many solar occultations (～200) from September 2006 to September 2010. For this period, the continuum of light absorption is analyzed in terms of spatial and temporal variations of the upper haze of Venus. It is shown that there is a high short-term (a few Earth days) and a long-term (～80 Earth days) variability of the extinction profiles within the data set. Latitudinal dependency of the aerosol loading is presented for the entire period considered and for shorter periods of time as well. |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ | |