Several single-platform satellite missions have been designed during the past decades in order to retrieve the atmospheric concentrations of anthropogenic greenhouse gases (GHG), initiating worldwide efforts towards better monitoring of their sources and sinks. To set up a future operational system for anthropogenic GHG emission monitoring, both re...
L’essor de la télédétection optique a permis des avancées majeures dans notre compréhension du fonctionnement de notre Terre, avec des applications terrestres, maritimes et météorologiques. Reposant sur l’exploitation d’un rayonnement électromagnétique, les capteurs enregistrent le signal de la scène en trois dimensions : deux dimensions spatiales ...
Optronic sensors on board satellites are used for remote sensing and telecommunications, but are submitted to meteorological conditions and among them cloud cover and aerosols. Aerosol presence in the field of view could be one of the key factor limiting performances of these sensors. The goal of this study is to predict optical transmission of a s...
Understanding the Global Climate Change and the way it will affect the Earth and preserving biodiversity are two major challenges of the 21st century. Forests cover 30% of continental surfaces and are a major contributor to the carbon cycle. Sequestration of carbon in forest biomass appears as an important mechanism - in conjunction with reduced em...
Sprites are the most common type of transient luminous events (TLEs). In the visible, near infrared and near ultraviolet, their emissions have been related to the excitation of electronic states of N2 and N2+. Even if it hasn’t been observed yet, the existence of emissions in the middle and far infrared is suspected and could be related to vibratio...
Many applications dedicated to urban areas (e.g. land cover mapping and biophysical properties estimation) using high spatial resolution remote sensing images require the use of 3D atmospheric correction methods, able to model complex light interactions within urban topography such as buildings and trees. Currently, one major drawback of these meth...
Context. Understanding the diversity of planets requires studying the morphology and physical conditions in the protoplanetary disks in which they form.Aims. We aim to study the structure of the ~10 Myr old protoplanetary disk HD 100453, to detect features that can trace disk evolution and to understand the mechanisms that drive these features.Meth...
