Search Publications
Retrieving cloud, dust and ozone abundances in the Martian atmosphere using SPICAM/UV nadir spectra
Vandaele, A. C.; Montmessin, F.; Willame, Y. +4 more
We present the retrieval algorithm developed to analyse nadir spectra from SPICAM/UV aboard Mars-Express. The purpose is to retrieve simultaneously several parameters of the Martian atmosphere and surface: the dust optical depth, the ozone total column, the cloud opacity and the surface albedo. The retrieval code couples the use of an existing com…
Measurement of dust optical depth using the solar irradiance sensor (SIS) onboard the ExoMars 2016 EDM
Rannou, P.; Toledo, D.; Gómez, L. +5 more
The solar irradiance sensor (SIS) was included in the DREAMS package onboard the ExoMars 2016 Entry Descent and Landing Demonstrator Module, and has been selected in the METEO meteorological station onboard the ExoMars 2020 Lander. This instrument is designed to measure at different time intervals the scattered flux or the sum of direct flux and s…
Signatures of the Martian rotation parameters in the Doppler and range observables
Yseboodt, Marie; Dehant, Véronique; Péters, Marie-Julie
The position of a Martian lander is affected by different aspects of Mars' rotational motions: the nutations, the precession, the length-of-day variations and the polar motion. These various motions have a different signature in a Doppler observable between the Earth and a lander on Mars' surface. Knowing the correlations between these signatures …
UV production of methane from surface and sedimenting IDPs on Mars in light of REMS data and with insights for TGO
Moores, John E.; Smith, Christina L.; Schuerger, Andrew C.
This paper refines model predictions for the production of methane from UV-irradiated interplanetary dust particles (IDPs) now that the Rover Environmental Monitoring Station (REMS) instrument onboard the Mars Science Laboratory (MSL) Rover has made the first measurements of the UV environment on the surface of Mars, at Gale Crater. Once these mea…