Alain Royer

Prix et distinctions

• (2021) Prix Ferdinand-Bonn de L'Association Québécoise de Télédétection en reconnaissance du caractère exceptionnel de ses réalisations et de sa carrière. Association Québécoise de Télédétection.

Financement

• Subvention. Developing a SWE retrieval algorithm using in-situ dual-Ku radar data. Environnement et Changement Climatique Canada (Ottawa, Canada). 100 000 $. (2024-2026).
• Subvention. Centre d'applications et de recherche en télédétection (CARTEL). Université de Sherbrooke (Sherbrooke, Canada). 90 000 $. (2023-2025).
• Subvention. Centre d'Étude Nordique. FQRNT, Québec (Québec, Canada). Regroupement stratégique. 500 $. (2022-2028).
• Subvention. Multidisciplinary Observatory for Arctic Climate Change and Extreme Events Monitoring (MOACC). Fondation canadienne pour l'innovation (Ottawa, Canada). 4 200 000 $. (2022-2027).
• Subvention. Peary caribou, muskoxen and their predators: the value of Indigenous Knowledge in informing species recovery. Natural Sciences and Engineering Research Council (Ottawa, Canada). 1 808 000 $. (2021-2026).
• Subvention. Géophysique spatiale de l'environnement nordique et changemement climatique. Conseil National de Recherches Canada (Ottawa, Canada). 1 650 000 $. (2020-2026).

Publications

Articles

• Vionnet et al. (2025). Enhancing simulations of snowpack properties in land surface models with the Soil, Vegetation and Snow scheme v2.0 (SVS2). GMD, EGUsphere.
• Alain Royer. (2025). Le déséquilibre du bilan d’énergie Terre-Atmosphère : élément clé du réchauffement climatique. La Climactualité.
• Ortet et al. (2025). Retrieving frozen ground surface temperature under the snowpack in Arctic permafrost area from SMOS observations. The Cryosphere.
• Alain Royer. (2025). Évènements météorologiques extrêmes et changements climatiques. Le Climatoscope 360.
• Ortet et al. (2024). Evaluation of soil moisture retrieval in Arctic and sub-Arctic environment using passive microwave satellite data. International Journal of Digital Earth.
• Meloche et al. (2024). Improvement of Polar Snow Microwave Brightness Temperature Simulations for Dense Wind Slab and Large Grain. IEEE Trans. on Geoscience and Remote Sensing.
• Alain Royer. (2024). Le changement climatique accroît les défis liés à la gestion de la neige et de la ressource en eau dans les stations de ski. Le Climatoscope.
• Sandells et al. (2024). Simulation of Arctic snow microwave emission in surface-sensitive atmosphere channels. The Cryosphere.
• Saulnier-Talbot et al. (2024). State shifts and divergent sensitivities to climate warming across northern ecosystems. Communications Earth & Environment.
• Kramer et al. (2023). Assessment of Arctic snow stratigraphy and water equivalent using a portable Frequency Modulated Continuous Wave RADAR. Cold Regions Science and Technology.
• Meloche et al. (2022). Characterizing Tundra snow sub-pixel variability to improve brightness temperature estimation in satellite SWE retrievals. The Cryosphere.
• Alain Royer. (2022). Enjeux nordiques : La preuve par satellite. Le Climatoscope 360, U. de S.
• Meloche et al. (2022). High-resolution snow depth prediction using Random Forest algorithm with topographic parameters: a case study in the Greiner Watershed, Nunavut. Hydrological Processes.
• Voglimacci-Stephanopoli et al. (2022). Potential of X-band polarimetric synthetic aperture radar co-polar phase difference for arctic snow depth estimation. The Cryosphere.
• Picard et al. (2022). The microwave snow grain size: A new concept to predict satellite observations over snow-covered regions. AGU Advances.
• Alain Royer. (2021). Improved simulations of Arctic snow properties and soil temperature climatology over the period 1979–2018 in circumpolar taiga and Arctic areas. Frontiers in Earth Science, Cryospheric Sciences section.
• Alain Royer. (2021). New northern snowpack classification linked to vegetation cover on a latitudinal mega-transect across Northeastern Canada. Écoscience.
• Alain Royer. (2021). Performance assessment of radiation-based field sensors for monitoring the water equivalent of snow cover (SWE). The Cryosphere.
• Laliberté et al. (2021). Retrieving dry snow stratigraphy using a versatile low-cost frequency modulated continuous wave (FMCW) K-band radar. Physical Geography.
• Mavrovic et al. (2021). Soil dielectric characterization at L-band microwave frequencies during freeze-thaw transitions. Hydrol. Earth Syst. Sci.
• Alain Royer. (2021). Two Decades of Snow Studies over a 4000 Km Transect, From 47°N To 83°N In Eastern Canada. IASC T-MOSAIC Newsletter.
• Patrick Pomerleau, Alain Royer, Alexandre Langlois, Patrick Cliche, Bruno Courtemanche, Jean-Benoît Madore, Ghislain Picard, Éric Lefebvre. (2020). Low Cost and Compact FMCW 24 GHz Radar Applications for Snowpack and Ice Thickness Measurements. Sensors. DOI
• Roy et al. (2020). L-Band response to freeze/thaw in a boreal forest stand from ground- and tower-based radiometer observations. Remote Sensing of Environment.
• Vargel et al. (2020). Arctic and Subarctic snow microstructure analysis for microwave brightness temperature simulations. Remote Sensing of Environment.
• Alain Royer. (2020). Crises économiques, CO2 et Climat : gare à l’effet pendule. Le Climatoscope 360, U. de S.
• Meloche et al. (2020). Improvement of microwave emissivity parameterization of frozen Arctic soils using roughness measurements derived from photogrammetry. International Journal of Digital Earth.
• Alain Royer. (2020). Le chaînon manquant. Bulletin de l’Association québécoise de télédétection.
• Langlois et al. (2020). Snow grain size and shape distributions in northern Canada. Frontiers in Earth Science.
• Mavrovic et al. (2020). Snow liquid water content measurement using an open-ended coaxial probe (OECP). Cold Regions Science and Technology.
• Alain Royer. (2019). Alerte dans les hautes latitudes nord : l’Arctique réagit au réchauffement climatique. Le Climatoscope.
• Kramer et al. (2019). Designing a Do-It-Yourself (DIY) Unmanned aerial Vehicle (UAV) for Arctic research purposes and proving its capabilities by retrieving snow depth via structure-from-motion. Aqhaliat, Polar Knowledge Canada.
• Rutter et al. (2019). Effect of snow microstructure variability on Ku-band radar snow water equivalent retrievals. The Cryosphere.
• Nicolas Marchand, Alain Royer, Gerhard Krinner, Alexandre Roy, Alexandre Langlois, Céline Vargel. (2018). Snow-Covered Soil Temperature Retrieval in Canadian Arctic Permafrost Areas, Using a Land Surface Scheme Informed with Satellite Remote Sensing Data. Remote Sensing. DOI
• Alexandre Roy, Marion Leduc-Leballeur, Ghislain Picard, Alain Royer, Peter Toose, Chris Derksen, Juha Lemmetyinen, Aaron Berg, Tracy Rowlandson, Mike Schwank. (2018). Modelling the L-Band Snow-Covered Surface Emission in a Winter Canadian Prairie Environment. Remote Sensing. DOI
• Alain Royer. (2018). La qualité de la neige évolue-t-elle avec le climat?. Bulletin de l’Association québécoise de télédétection.
• Dolan et al. (2018). Assessment of the Barren Ground Caribou die-off during winter 2015-2016 using passive microwave observations. Geophysical Research Letter.
• Larue et al. (2018). Assimilation of passive microwave AMSR-2 satellite observations in a snowpack evolution model over North-Eastern Canada. Hydrology and Earth System Sciences.
• Mavrovic et al. (2018). Dielectric characterization of vegetation at L band using an open-ended coaxial probe. Geosci. Instrum. Method. Data Syst.
• Montpetit et al. (2018). In-situ passive microwave parameterization of sub-arctic frozen organic soils. Remote Sensing of Environment.
• Prince et al. (2018). Intercomparison of Aquarius L-band and Ka-band Surface Freeze/Thaw Products. Earth System Science Data.
• Larue et al. (2018). Simulation and assimilation of passive microwave data using a snowpack model coupled to a calibrated radiative transfer model over North- Eastern Canada. Water Resources Research.
• Prince et al. (2018). Timing and Spatial Variability of Fall Soil Freezing in Boreal Forest and its Effect on SMAP L-band Radiometer Measurements. Remote Sensing of Environment.
• Lyu et al. (2018). Validation of the SMAP freeze/thaw product using categorical triple collocation. Remote Sensing of Environment.
• Langlois et al. (2017). Detection of rain-on-snow (ROS) events and ice layer formation using passive microwave radiometry: A context for Peary caribou habitat in the Canadian Arctic. Remote Sensing of Environment.
• Busseau et al. (2017). Analysis of snow-vegetation interactions in the Low Arctic – Subarctic transition zone (north-eastern Canada). Physical Geography.
• Alain Royer. (2017). Comparison of commonly-used microwave radiative transfer models for snow remote sensing. Remote Sensing of Environment.
• Dolan et al. (2017). Meteorological inventory of Rain-On-Snow events in the Canadian Arctic Archipelago and satellite detection assessment using passive microwave data. Physical Geography.
• Wigneron et al. (2017). Modelling the passive microwave signature from land surfaces: A review of recent results and application to the L-Band SMOS & SMAP soil moisture retrieval algorithms. Remote Sensing of Environment.
• Toose et al. (2017). Radio-frequency interference mitigating hyperspectral L-band radiometer. Geosci. Instrum. Method. Data Syst.
• Roy et al. (2017). Response of L-Band brightness temperatures to freeze/thaw and snow dynamics in a prairie environment from ground-based radiometer measurements. Remote Sensing of Environment.
• Derken et al. (2017). Retrieving landscape freeze/thaw state from SoilMoisture Active Passive (SMAP) radar and radiometer measurements. Remote Sensing of Environment.
• Roy et al. (2017). Spatial Variability of L-BandBrightness Temperature during Freeze/Thaw Events over a Prairie Environment. Remote Sensing.
• Ouellet et al. (2017). Spatialization of the SNOWPACK snow model for the Canadian Arctic to assess Peary caribou winter grazing conditions. Physical Geography.
• Blanchard et al. (2017). Thin ice clouds in the Arctic: Cloud optical depth and particle size retrieved from ground-based thermal infraredradiometry. Atmospheric Measurement Techniques.
• Larue et al. (2017). Validation of GlobSnow-2 snow water equivalentover Eastern Canada. Remote Sensing of Environment.
• Dolan et al. (2016). Development of a rain-on-snow detection algorithm using passive microwave radiometry. Hydrological Processes.
• Roy et al. (2016). Microwave snow emission modelling uncertainties in boreal and subarctic environments. The Cryosphere.
• Papasodoro et al. (2016). Potential of RADARSAT-2 stereo radargrammetryfor the generation of glacier digital elevation models. J. of Glaciology.
• Papasodoro et al. (2015). Area, elevation and mass changes of the two southernmost icecaps of the Canadian Arctic Archipelago between 1952 and 2014. The Cryosphere.
• Courtemanche et al. (2015). Creation of a lambertian microwave surface for retrieving the downwelling contribution in ground-based radiometric measurements. IEEE Geoscience and Remote Sensing Letters.
• Alain Royer. (2015). Evaluation of Spaceborne L-band Radiometer Measurements for Terrestrial Freeze/Thaw Retrievals in Canada. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing.
• Montpetit et al. (2015). Evaluation of multi-frequency bare soil reflectivity model. Remote Sensing of Environment.
• André et al. (2015). Land Surface Temperature Retrieval over circumpolar Arctic using SSM/I-SSMIS and MODIS Data. Remote Sensing of Environment.
• Langlois et al. (2014). Evaluation of CLASS 2.7 and 3.5 simulations of snow properties from the Canadian Regional Climate Model (CRCM4) over Québec. J. of Hydrometeorology.
• Picard et al. (2014). Influence of meter-scale wind-formed features on the variability of the microwave brightness temperature around Dome C in Antarctica. The Cryosphere.
• Dupont et al. (2014). Modeling the microwave emission of bubbly ice: Applications to blue ice and superimposed ice in the Antarctic and Arctic. IEEE Transactions on Geoscience and Remote Sensing.
• Roy et al. (2014). Relationship between forest microwave transmissivity and structural parameters for the Canadian boreal forest. IEEE Geoscience and Remote Sensing Letters.
• Bergeron et al. (2014). Snow cover estimation using blended MODIS and AMSR-E data for improved watershed-scale spring streamflow simulation in Quebec. Hydrological Processes.
• Rutter et al. (2014). Snow stratigraphic heterogeneity within ground-based passive microwave radiometer footprints: Implications for emission modeling. J. Geophys. Res. Earth Surf.
• Chokmani et al. (2013). A Merging Algorithm for Regional Snow Mapping over Eastern Canada from AVHRR and SSM/I Data. Remote Sensing.
• Roy et al. (2013). Brightness temperature simulations of the Canadian seasonal snowpack driven by measurements of snow specific surface area. IEEE Transactions on Geoscience and Remote Sensing.
• Picard et al. (2013). Simulation of the microwave emission of multi-layered snowpacks using the Dense Media Radiative transfer theory: the DMRT-ML model. Geoscientific Model Development.
• Montpetit et al. (2013). Snow microwave emission modeling of ice lenses within a snowpack using the Microwave Emission Model for Layered Snowpacks. IEEE Transactions on Geoscience and Remote Sensing.
• Roy et al. (2013). Snow specific surface area simulation using the one-layer snow model in the Canadian LAnd Surface Scheme (CLASS). The Cryosphere.
• Roy et al. (2012). A simple parameterization for a boreal forest radiative transfer model at microwave frequencies. Remote Sensing of Environment.
• Langlois et al. (2012). Coupling of the snow thermodynamic model SNOWPACK with the Microwave Emission Model for Layered Snowpacks (MEMLS) for subarctic and arctic Snow Water Equivalent retrievals. Water Resources Research.
• Kohn et Royer. (2012). Microwave brightness temperature as an indicator of near-surface air temperature over snow in Canadian northern regions. International Journal of Remote Sensing.
• Dupont et al. (2012). Monitoring the melt season length of the Barnes Ice Cap over the 1979–2010 period using active and passive microwave remote sensing data. Hydrological Processes.
• Montpetit et al. (2012). New short wave infrared albedo measurements for snow specific surface area retrieval. Journal of Glaciology.
• Derksen et al. (2012). Variability and Change in the Canadian Cryosphere. Climate Change.
• Kohn et Royer. (2011). AMSR-E data Inversion for soil temperature estimation under snow cover. Remote Sensing of Environment.
• Langlois et al. (2011). Improved corrections of forest effects on passive microwave satellite remote sensing of snow over boreal and subarctic regions. IEEE Transactions on Geoscience and Remote Sensing.
• Touré et al. (2011). A Case Study of Using a Multi-Layered Thermo-Dynamical Snow Model for Radiance Assimilation. IEEE Transactions on Geoscience and Remote Sensing.
• Roy et al. (2011). Analyse de l’identification de la fonte de neige printanière avec QuickSCAT dans le Sud du Québec, Canada. Canadian Journal of Remote Sensing.
• Brucker et al. (2011). Hourly simulations of the microwave brightness temperature of seasonal snow in Quebec, Canada, using a coupled snow evolution-emission model. Remote Sensing of Environment.
• Langlois et al. (2010). Analysis of simulated and spaceborne passive microwave brightness temperatures using in situ measurements of snow and vegetation properties. Canadian Journal of Remote Sensing.
• Roy et al. (2010). Improvement of spring floods simulations with the use of remote sensing snow cover area data in Québec. Journal of Hydrology.
• Vachon et al. (2010). Inversion of a snow emission model calibrated with in situ data for snow water equivalent monitoring. IEEE Transactions on Geoscience and Remote Sensing.
• Alain Royer. (2010). Monitoring Dry, Wet and No- Snow Conditions from Microwave Satellite Observations. IEEE Geoscience and Remote Sensing Letters.
• Langlois et al. (2010). On the relationship between measured and modeled snow grain morphology using infrared reflectance. Cold Regions Science and Technology.
• Turcotte et al. (2010). Simulation hydrologique des derniers jours de la crue de printemps: le problème de la neige manquante. Hydrological Sciences Journal.
• Alain Royer. (2010). Surface temperature spatial and temporal variations in Northern America from homogenized satellite SSMR-SSM/I microwave measurements and reanalysis for 1979-2008. JOURNAL OF GEOPHYSICAL RESEARCH, Atmospheres.
• Touré et al. (2009). Near-infrared digital photography to estimate snow correlation length for microwave emission modeling. Applied Optics.
• Langlois et al. (2009). Simulation of Snow Water Equivalent (SWE) Using Thermodynamic Snow Models in Québec, Canada. Journal of Hydrometeorology.
• Haboudane et al. (2008). Evaluation and predictability of terrain susceptibility to hillslope erosion at the regional scale using dem-derived indices and remotely sensed information. Revue Télédétection.
• Alain Royer. (2008). Trente-cinq ans d’observation de la Terre : de la photographie à l’électromagnétométrie. Revue Télédétection.
• Haboudane et al. (2002). Evaluation and predictability of terrain susceptibility to hillslope erosion at the regional scale using dem-derived indices and remotely sensed informationLand degradation and erosion risk mapping by fusion of spectrally-based information and digital geomorphometric attributes. International Journal of Remote Sensing.

Articles de conférence

• Vionnet et al. (2024). Enhancing snowpack simulations in land surface models in support of spaceborne snow missions. Canadian Geophysical Union Annual Meeting (CGU).
• Picard et al. (2022). Advances in the Snow Microwave Radiative Model to prepare the CRISTAL, CIMR and ROSE-L missions. ESA 2022 Leaving Planet Symposium.

Rapports

• DeLaFontaine et al. (2009). Platform for the Observation of the Earth and for in-orbit Technology Experiments POETE. Canadian Space Agency, Canada.
• Blanchet et al. (2009). Thin Ice Cloud in Far-Infrared Experiment (TICFIRE). Canadian Space Agency.

Autres contributions

Activités professionnelles

• Association Québécoise de Télédétection. Président. Québec, Canada. (2011-2013).
• Univ. de Sherbrooke. Centre d'Applications et de Recherches en Télédétection (CARTEL). Directeur. Sherbrooke, Québec, Canada. (2000-2010).