Samuel Morin

Learn More
Detailed studies of snow cover processes require models that offer a fine description of the snow cover properties. The detailed snowpack model Crocus is such a scheme, and has been run operationally for avalanche forecasting over the French mountains for 20 yr. It is also used for climate or hydrological studies. To extend its potential applications,(More)
Climate-induced changes in snow cover are likely to affect cold arctic and alpine ecosystems functioning and major processes such as wintertime plant litter decomposition. However, it remains poorly studied in subalpine systems where the snowpack may be irregular. In this paper we explored the dynamic of the winter plant litter decomposition process, its(More)
Various computing and data resources on the Web are being enhanced with machine-interpretable semantic descriptions to facilitate better search, discovery and integration. This interconnected metadata constitutes the Semantic Web, whose volume can potentially grow the scale of the Web. Efficient management of Semantic Web data, expressed using the W3C's(More)
Atmospheric nitrogen oxides (NOx =NO+ NO2) play a pivotal role in the cycling of reactive nitrogen (ultimately deposited as nitrate) and the oxidative capacity of the atmosphere. Combined measurements of nitrogen and oxygen stable isotope ratios of nitrate collected in the Arctic atmosphere were used to infer the origin and fate of NOx and nitrate on a(More)
Long-term observations of the reactive chemical composition of the tropical marine boundary layer (MBL) are rare, despite its crucial role for the chemical stability of the atmosphere. Recent observations of reactive bromine species in the tropical MBL showed unexpectedly high levels that could potentially have an impact on the ozone budget. Uncertainties(More)
M achine-interpretable semantic descriptions are enhancing various computing and data resources on the Web to make it easier to search, discover, and integrate data. This interconnected metadata constitutes the Semantic Web, whose main principles, languages, frameworks, and best practices are set by the World Wide Web Consortium. The W3C’s metadata(More)
This study discuss the potential of using remote sensing data from Synthetic Aperture Radar (SAR), couple with Dense Media Radiative Transfer (DMRT) model, to constrain the snowpack's optical grain size and density calculated by the detailed snowpack model Crocus. A snowpack Electromagnetic Backscattering Model (EBM) based on DMRT compatible with X-band and(More)
  • 1