Retrieval of Venus' clouds and hazes properties with polarimetric data from SPICAV/VEx - Archive ouverte HAL Access content directly
Conference Papers Year : 2015

Retrieval of Venus' clouds and hazes properties with polarimetric data from SPICAV/VEx

(1) , (1) , (1) , (1) , (2) , (3) , (4) , (2)
1
2
3
4
Loïc Rossi
Emmanuel Marcq
Nicolas Bott
  • Function : Author
Franck Montmessin
Jean-Loup Bertaux
  • Function : Author
  • PersonId : 914210

Abstract

The study of Venus’ cloud layers is important in or- der to understand the structure, radiative balance and dynamics of the Venusian atmosphere. Polarization measurements have given important constraints for the determination of the constituents of the clouds and haze.From ground based observations, Hansen and Hovenier[3], using a radiative transfer model includ- ing polarization, found that the main cloud layers be- tween 50 and 70 km consist of r ∼ 1 μm radius spher- ical droplets of a H SO -H O solution. In the early 1980s, Kawabata[4] used the polarization data from the OCPP instrument on the spacecraft Pioneer Venus to constrain the properties of the overlying haze. They found that the haze layer is composed of smaller parti- cles with r ∼ 0.25 μm and similar refractive indices. Our work reproduces the method used by Hansen and Kawabata[3, 4]. We applied a radiative transfer model with polarization on the polarization data of the SPICAV-IR instrument on-board ESA’s Venus Ex- press. Our aim is to better constrain haze and cloud particles at the top of Venus’s clouds, as well as their spatial and temporal variability.
Fichier principal
Vignette du fichier
EPSC2015-119.pdf (205.84 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

insu-01213216 , version 1 (08-10-2015)

Identifiers

  • HAL Id : insu-01213216 , version 1

Cite

Loïc Rossi, Emmanuel Marcq, Nicolas Bott, Franck Montmessin, Anna Fedorova, et al.. Retrieval of Venus' clouds and hazes properties with polarimetric data from SPICAV/VEx. European Planetary Science Congress 2015, Sep 2015, Nantes, France. pp.EPSC2015-119. ⟨insu-01213216⟩
275 View
211 Download

Share

Gmail Facebook Twitter LinkedIn More