Search Publications
Infrared absorption by pure CO2 near 3340 cm-1: Measurements and analysis of collisional coefficients and line-mixing effects at subatmospheric pressures
Daneshvar, L.; Földes, T.; Buldyreva, J. +1 more
High resolution Fourier transform spectra of the 21102-00001 band of 12C16O2 near 3340 cm-1 have been recorded and analyzed to extract isolated-line intensities and collisional parameters, and first-order line-mixing coefficients. Voigt, hard-collision Rautian and Sobel'man, and quadratic-speed-dependent…
MSR, a multi-spectrum retrieval technique for spatially-temporally correlated or common Venus surface and atmosphere parameters
Kappel, David
A common way to regularize mathematical ill-posed retrieval problems in atmospheric remote sensing is the incorporation of single-spectrum Bayesian a priori mean values and standard deviations for the parameters to be retrieved, along with measurement and simulation error information. This decreases the probability to obtain unlikely parameter val…
Carbon dioxide absorption at high densities in the 1.18 µm nightside transparency window of Venus
Piccioni, Giuseppe; Snels, Marcel; Stefani, Stefania +1 more
The attenuation of carbon dioxide at pressures between 1 and 38 bar has been measured from 1179.5 to 1182.7 nm at room temperature (293 K) by using a cavity ring down spectrometer. The densities used in the experiment correspond with the densities in the Venus atmosphere from about 50 km down to the surface, although the experimental temperature i…
Lunar photometric modelling with SMART-1/AMIE imaging data
Muinonen, K.; Videen, G.; Josset, J. -L. +2 more
We investigate the light-scattering properties of the lunar mare areas. A large photometric dataset was extracted from images taken by the AMIE camera on board the SMART-1 spacecraft. Inter-particle shadowing effects in the regolith are modelled using ray-tracing simulations, and then a phase function is fit to the data using Bayesian techniques a…