Samuel is a remote sensing scientist specialised in Earth observation through satellite passive microwave measurements. Following an engineering diploma in computer science and data analysis from Université de Technologie de Compiègne, he earned a PhD from Observatoire de Paris focusing on the measurement of global Land Surface Temperature. Relying on the combination of physical models …
Vegetation is a central component of the Earth’s system, governing surface water exchanges and constituting one of the largest terrestrial carbon reservoirs. Ongoing disturbances, whether natural or human-induced, combined with the impacts of changing climate, induce rapid alterations on a global scale. Accurate and consistent assessments of vegetation status are imperative to meet the needs …
As the global water cycle intensifies, the Earth’s surface will experience more extreme weather and climate events. Increasingly intense and frequent hydrological extremes, such as heavy precipitation events (HPEs), will result in unprecedented alteration of terrestrial ecosystem processes. Prior research has succeeded to track and catalogue several weather phenomena that act as drivers of hydrological …
Synthetic Aperture Radar (SAR) backscatter can provide crucial information about the progression of a volcanic eruption,regardless of the time of day or environmental conditions (e.g., cloud coverage). SAR backscatter is dependent on the surface scattering properties, which can be altered during a volcanic eruption through the emplacement or removal of material. Monitoring backscatter changes through …
The oceans, a major sink of carbon dioxide (CO2), rely on a set of food web processes that generate gravitational sinking particles to transfer CO2 from the atmosphere to the deep ocean. These processes are collectively known as the biological carbon pump (BCP) and have become a focal point of research as anthropogenic CO2 emissions …
The upcoming ESA FORUM (Far-infrared Outgoing Radiation Understanding and Monitoring) mission will be the first to measure the Earth’s spectrally resolved outgoing longwave radiation in the far-infrared (FIR) at high spectral resolution. This spectral region is responsible for over half of the Earth’s emissions to space, with the principal absorbers being CO2 and H2O. The …
During drought, water deficit depletes tree water content, which can lead to water stress mortality, vulnerability to wildfires and increased susceptibility to insect and pathogen attacks. Widespread tree mortality could be triggered by increased drought frequency, such as expected in Europe, which can lead to disrupting the provision of important ecosystem services and increased carbon …
Carbon dioxide (CO₂) has experienced an alarming increase since the Industrial Revolution due to anthropogenic factors like fossil fuel combustion and deforestation. Before the Industrial Revolution, atmospheric CO₂ levels were relatively stable, around 280 parts per million (ppm). By the 21st century, human activities have increased CO₂ concentrations beyond 400 ppm, reaching levels not seen …
IRS4BEF seeks to optimise the integration of multi-source remote sensing imagery to quantify plant functional diversity at site scale (e.g., eddy covariance station) and assess Biodiversity-Ecosystem Function relationships. The underlying hypothesis is that missions providing spectral information of different domains could be more informative of the role of plant functional diversity on ecosystem functions than …
