title: Improved algorithm for the transmittance estimation of spectra obtained with SOIR/Venus Express.
abstract: The Solar Occultation in the InfraRed (SOIR) instrument onboard the ESA Venus Express spacecraft, an infrared spectrometer sensitive from 2.2 to 4.3 μm, probed the atmosphere of Venus from June 2006 until December 2014. During this time, it performed more than 750 solar occultations of the Venus mesosphere and lower thermosphere. A new procedure has been developed for the estimation of the transmittance in order to decrease the number of rejected spectra, to check that the treated spectra are well calibrated, and to improve the quality of the calibrated spectra by reducing the noise and accurately normalizing it to the solar spectrum.
authors.forename: Loic
authors.initials: L
authors.lastname: Trompet
authors.forename: Arnaud
authors.initials: A
authors.lastname: Mahieux
authors.forename: Bojan
authors.initials: B
authors.lastname: Ristic
authors.forename: Séverine
authors.initials: S
authors.lastname: Robert
authors.forename: Valérie
authors.initials: V
authors.lastname: Wilquet
authors.forename: Ian R
authors.initials: IR
authors.lastname: Thomas
authors.forename: Ann Carine
authors.initials: AC
authors.lastname: Vandaele
authors.forename: Jean-Loup
authors.initials: JL
authors.lastname: Bertaux