Alexandre Langlois

Prix et distinctions

• Bronze Medal from the Canadian Remote sensing Society 2017 / Médaille de bronze de la Société canadienne de télédétection 2017. Canadian Remote Sensing Society. (Prize / Award).

Financement

• Grant. (Awarded). Principal Applicant. Peary caribou, muskoxen and their predators: the value of Indigenous Knowledge in informing species recovery. Natural Sciences and Engineering Research Council of Canada (NSERC). Alliance. 1 808 637 $. (2021-2026)
• Grant. (Awarded). Principal Applicant. Quantifying multi-scale impacts of winter extreme events on the atmosphere-snow-ground interface in the Arctic. Natural Sciences and Engineering Research Council of Canada (NSERC). Découverte. 225 000 $. (2021-2026)
• Grant. (Awarded). Principal Applicant. Multidisciplinary Observatory for Arctic Climate Change and Extreme Events Monitoring (MOACC). Canada Foundation for Innovation (CFI). Innovation Fund. 4 262 997 $. (2021-2026)
• Grant. (Awarded). Principal Applicant. Développement d'une plateforme de simulations du couvert nival en milieu montagneux à l'aide de la télédétection pour l'amélioration de la prédiction du risque d'avalanche. Fonds de recherche du Québec - Nature et technologies (FRQNT). Projet de recherche en equipe. 150 000 $. (2021-2024)
• Grant. (Awarded). Principal Applicant. Improved Snowfall Estimation in support of Avalanche Hazard Assessment. National Search and Rescue Secretariat (NSS). New Initiatives Fund. 431 600 $. (2021-2024)
• Contract. (Awarded). Principal Applicant. Developing a geodatabase of sediments processes in the Fraser River watershed, British-Columbia. Environment Canada. CCIW. 34 975 $. (2022-2023)
• Contract. (Awarded). Principal Applicant. Developing snow indices using high-resolution imagery over forested and agricultural areas. Environment Canada. CCIW. 30 020 $. (2022-2023)
• Contract. (Awarded). Principal Applicant. Adapting the SNOWPACK snow cover model to Arctic conditions. Polar Knowledge Canada. 34 375 $. (2021-2022)
• Contract. (Awarded). Principal Applicant. Analysis of geospatial information for the Bay of Quinte (Lake Ontario) and watersheds. Environment Canada. 35 000 $. (2020-2021)
• Grant. (Awarded). Principal Applicant. Modelling future changes in snow characteristics in the Canadian Arctic to identify priority areas for Peary, Dolphin and Union caribou and Barren ground caribou. Environment Canada. Grant and Contribution. 120 000 $. (2018-2021)
• Grant. (Awarded). Principal Investigator. Operational snow simulations for avalanche forecasting in Canada: implementation of the SNOWPACK model into the Avalanche Forecasting System. Santé publique Canada. SAR New Initiatives Fund. 348 250 $. (2018-2021)
• Grant. (Awarded). Principal Applicant. Peary caribou, muskoxen and their predators: the value of Indigenous Knowledge in informing species recovery. Environment and Climate Change Canada. Grant and Contribution. 35 294 $. (2020-2021)
• Grant. (Awarded). Principal Applicant. Amélioration des Prévisions de l’Impact de l'évolution du Climat Nordique sur la cryosphère terrestre (APIC-Nord). Conseil franco-québécois de coopération universitaire (CFQCU). Conseil franco-québécois de coopération universitaire (CFQCU). 25 000 $. (2017-2020)
• Grant. (Awarded). Principal Applicant. Development of a multi-scale cryosphere monitoring network for the Kitikmeot region and Northwest territories using in-situ measurements, modeling and remote sensing. Polar Knowledge Canada. Polar Knowledge Canada. 525 453 $. (2017-2020)
• Grant. (Awarded). Principal Applicant. Développement d’indicateurs spatialisés de qualité d’habitats hivernaux nordiques à l’aide d’observations satellites et de modélisation du couvert nival : contexte pour le caribou barren-ground et Peary. Fonds de recherche du Québec - Nature et technologies (FRQNT). Projet équipe. 190 738 $. (2017-2020)
• Contract. (Completed). Principal Applicant. Geographic Information System programming and data management to support the Lake Winnipeg Basin initiative. Environment and Climate Change Canada. Research contract. 23 500 $. (2017-2018)
• Grant. (Completed). Co-applicant. Development of an autonomous radar for remotely measuring snow and ice thickness over lakes and rivers. Natural Sciences and Engineering Research Council of Canada (NSERC). Collaborative Research and Development Grants. 63 300 $. (2016-2017)
• Grant. (Completed). Principal Applicant. Identification of snow accumulation zones and cornices using LiDAR Unmanned Aerial Vehicles (UAVs) in an avalanche forecasting context. Natural Sciences and Engineering Research Council of Canada (NSERC). Engage. 24 567 $. (2017-2017)
• Contract. (Completed). Principal Applicant. Downscaling SNOWPACK model outputs to 1km resolution in support of Peary caribou habitat modeling. Environment Canada. Research contract. 21 500 $. (2016-2017)
• Grant. (Completed). Principal Applicant. Développement d’une plateforme numérique pour l’utilisation d’un modèle de simulation numérique du couvert nival dans un contexte académique. Université de Sherbrooke. Fonds d'innovation pédagogique. 8 000 $. (2016-2017)
• Contract. (Completed). Principal Applicant. Evaluation of a snow model with snow depth based on UAV Acquisitions in Support of Flood Plain Characterization. Natural Resources Canada. Research contract. 22 000 $. (2016-2017)
• Contract. (Completed). Co-applicant. Investigation of potential factors contributing to Barren Ground Caribou die-off on Prince Charles Island using remotely sensed indices of snow condition. Environment Canada. Research contract. 8 780 $. (2017-2017)
• Contract. (Completed). Principal Applicant. High resolution snow water equivalent and runoff modeling over the Bay of Quinte watershed, Lake Ontario, Canada. Canadian Centre for Inland Waters. Research contract. 23 500 $. (2016-2016)
• Grant. (Completed). Co-applicant. 32 ans de base de données de zonation du pergélisol dérivée d'un indice satellitaire. Centre d'études nordiques. Gradient nordique. 6 800 $. (2016-2016)

Publications

Articles de revue

• Kramer, D., Langlois, A., Royer, A., Madore, J.-B., King, J., McLennan, D. and Boisvert-Vigneault, E. (2022). Assessment of Arcticsnow stratigraphy and water equivalent using a portable Frequency ModulatedContinuous Wave (FMCW) radar. Cold Regions Science and Technology DOI. (Published).
• Meloche, J., Langlois, A., Rutter, N., McLennan, D., Royer, A., Billecocq, P. Ponomarenko, S. (2022). High-resolution snowdepth prediction using Random Forest algorithm with topographic parameters andan ecosystem map: a case study in the Greiner Watershed, Nunavut. Hydrological Processes (Published).
• J.B. Madore* C. Fierz A. Langlois. (2022). Investigation ofpercolation and liquid water content (LWC) in a multilayered snow model for wetsnow instabilities in Glacier National Park, Canada. Frontiers in Earth Science DOI. (Published).
• Sasseville, V.* Langlois, A. Brucker, L. Johnson, C.A. (2022). Patterns and trendanalysis of rain-on-snow events using passive microwave satellite data over theCanadian Arctic Archipelago since 1987. Journal of Hydrometeorology (Submitted).
• Meloche, J., Langlois, A., Rutter, N., Royer, A., King, J. and Walker, B. (2021). Characterizing Tundrasnow sub-pixel variability to improve brightness temperature estimation insatellite SWE retrievals. The Cryosphere (Published).
• Voglimacci-Stephanopoli, J., Wendleder, A., Lantuit, H., Langlois, A., Dedieu, J.-P., Roth, A., and Royer, A. (2021). Evaluating the potentialof the radar co-polar phase difference (CPD) for extracting arctic snowinformation. The Cryosphere (Published).
• Gautier, C., Langlois, A., Johnson, C.A., Sasseville, V. and Neave, E. (2021). Evaluation of Pearycaribou (Rangifer tarandus pearyi) habitat conditions and seasonal movementpatterns using remote sensing, snow modelling, survey data and traditionalknowledge. Polar Research (In Press).
• Royer, A., Picard, G., Vargel, C.*, Langlois, A., Gouttevin, I., and Dumont, M. (2021). Improved simulations of Arctic snow properties and soil temperature climatology over the 1979-2018period in circumpolar taiga and Arctic areas. Frontiers in Earth Science 9 19pp. (Published).
• Martineau, C.*, Langlois, A., Johnson, C.-A., Gouttevin, I., and Neave, E. (2021). Improving Peary caribou presence prediction from the MaxEnt model using spatialized snow simulations: acase study over Bathurst Island Complex, Nunavut, Canada. Arctic (Accepted).
• Letcher, T., Vuyovich, C., Langlois, A. and Roy, A. (2021). Improving the understanding and uncertainty of snow radiative transfer modeling within a mixed deciduous and evergreen forest. Journal of Selected Topics on Applied Earth Observations in Remote Sensing 14 (8225-8235), (Published).
• Holtzman, N., Anderegg, L.D.L., Kraatz, S., Mavrovic, A.*, Sonnentag, O., Pappas, C., Cosh, M., Langlois, A., Lakhankar, T., Tesser, D., Steiner, N., Colliander, A., Roy, A., Konings, A.G. (2021). L-band vegetation optical depth as an indicator of plant water potential in a temperate deciduous forest stand. Biogeosciences 18 (739-753), (Published).
• S. Levasseur*, K. Brown, Langlois, A., D. McLennan. (2021). Measurement of physical properties and stable isotope composition ofsnow. Atmosphere-Ocean 59 (3), 137-151. (Published).
• Royer A., Domine, F., Roy, A., Langlois, A., Marchand, N. and Davesne, G.*. (2021). New northern snowpack classification linked to vegetation cover on a latitudinal mega-transect across Northeastern Canada. Ecoscience (Published).
• Royer, A., Roy, A., Jutras, S. and Langlois, A. (2021). Performance assessmentof electromagnetic wave-based field sensors for SWE monitoring. The Cryosphere (Published).
• Laliberté, J.*, Langlois, A., Royer, A., Madore, J.-B.* and Gauthier, F. (2021). Retrieving highcontrasted interfaces in dry snow using a frequency modulated continuous wave(FMCW) Ka-band radar: a context for dry snow stability. Physical Geography (Published).
• Vargel., C.*, Royer, A., St-Jean rondeau, O.*, Picard, G., Roy, A., Sasseville, V.* and Langlois, A. (2020). Arctic and Subarctic snow microstructure analysis for microwave brightness temperature simulations. Remote Sensing of Environment 242 (Published).
• A. Roy P. Toose A. Mavrovic C. Pappas A. Royer C. Derksen A. Berg T. Rowlandson M. El-Amine W. Helgason A. Barr A. Black A. Langlois O. Sonnentag. (2020). L-Band response to freeze/thaw in a boreal forest stand from ground and tower-based radiometerobservations. Remote Sensing of Environment 237 (Published).
• Pomerleau P.*, Royer, A., Langlois, A., Cliche, P., Courtemanche, B., Madore, J.-B.*, Picard, G. and Lefebvre, E. (2020). Low cost and compact FMCW 24-GHz radar for snowpack and ice thickness measurements. Sensors 20 (14), (Published).
• Meloche, J.*, Royer, A., Langlois, A., Rutter, N. and Sasseville, V.*. (2020). Passive microwave emission of frozen tundra soils using roughness measurements derived from photogrammetry. International Journal of Digital Earth (Published).
• Langlois, A., Royer, A., Montpetit, B., Roy, A. and Durocher, M.*. (2020). Snow grain size and shape distributions in northern Canada. Frontiers in Earth Science 7 (Published).
• Mavrovic, A.*, Madore, J.-B.*, Langlois, A., Royer, A. and Roy, A. (2020). Snow liquid water content measurement using an open-ended coaxial probe (OECP). Cold Regions Science and Technology 171 (Published).
• D. Kramer*, J. Meloche*, A. Langlois, D. McLennan, C. Gauthier-Barrette*, A. Royer, P. Cliche. (2019). Designing a DIY-UAV forarctic research purposes and proving its capabilities by retrieving snow depthvia structure-from-motion. Polar Knowledge: Aqhaliat DOI. (Published).
• S. Kaluskar*, A. B.-Richards, C.A. Johnson, Y. He, A. Langlois, D.K. Kim, G. Arhonditsis. (2019). Development of a model ensemble to predict Peary caribou populations in the Canadian Arctic Archipelago. Ecoshere 10 (12), (Published).
• M. Prince*, A. Roy, A. Royer, A. Langlois. (2019). Timing and Spatial Variability of Fall Soil Freezing in Boreal Forest and its Effect on SMAP L-band Radiometer Measurements. Remote Sensing of Environment 231 (Published).
• Caroline Dolant* Benoit Montpetit Alexandre Langlois Ludovic Brucker Olga Zolina Cheryl-Ann Johnson Alain Royer Paul Smith. (2018). Assessment of the barren-ground caribou die-off during winter 2015-2016 using passive microwave observations. Geophysical Research Letters 45 (Published).
• Madore, J.-B.*, Langlois, A. Côté, K.*. (2018). Evaluation of the SNOWPACK model's metamorphism and microstructure in a Canadian context: A case study. Physical Geography (Published).
• Montpetit, B., Royer, A., Roy, A. and Langois, A. (2018). In-situ passive microwave emission model parameterization of sub-arctic frozen organic soils. Remote Sensing of Environment 205 112-118. (Published).
• F. Domine, G. Picard, S. Morin, M. Barrere, J.-B. Madore*, A. Langlois. (2018). Major Issues in Simulating some Arctic Snowpack Properties Using Current Detailed Snow Physics Models. Consequences for the Thermal Regime and Water Budget of Permafrost. Journal of Advances in Modeling Earth Systems 11 (Published).
• N. Marchand*, A. Royer, G. Krinner, A. Roy, A. Langlois. (2018). Snow-covered ground-temperature retrieval in Canadian arctic permafrost areas using a landsurface scheme informed with satellite remote sensing data. Remote sensing 10 (11), 1703-1721. (Published).
• Joshua King Chris Derksen Peter Toose Alex Langlois Chris Larsen J. Lemmetyinen Phil Marsh Benoit Montpetit Alex Roy Nick Rutter Matthew Sturm. (2018). The influence of snow microstructure on dual-frequency radar measurements in a tundra environment. Remote sensing of environment 215 242-254. (Published).
• Lyu, H., McColl, K.A., Li, X., deriksen, C., Berg, A., Black, T.A., Euskirchen, E., Loranty, M., Pulliainen, J., Rautiainen, K., Rowlandson, T., Roy, A., Royer, A., Langlois, A., Stephens, J., Liu, H., Entekhabi, D. (2018). Validation of the SMAPfreeze/thaw product using categorical triple collocation. Remote sensing of Environment 205 329-337. (Published).
• Busseau, B.-C.*, Royer, A., Langlois, A., Barrère, M.* And Domine, F. (2017). Analysis of the Interactions between Snow and Vegetation over low Arctic – Subarctic transition (North Eastern Canada). Physical Geography 38 159-175. (Published).
• Royer A., A. Roy, B. Montpetit, O. Saint-Jean-Rondeau*, G. Picard, L. Brucker, and A. Langlois. (2017). Comparison of commonly-used microwave radiative transfer models for snow remote sensing. Remote Sensing of Environment 190 247-259. (Published).
• Langlois, A., Johnson, C.-A., Montpetit, B., Royer, A., Blukacz-Richards, E.A., Neave, E., Dolant, C.*, Roy, A., Arhonditsis, G., Kim, D.-K.F, Kaluskar, S.*, and Brucker, L. (2017). Detection of rain-on-snow (ROS) events and ice layer formation using passive microwave radiometry: A context for the Peary caribou habitat in the Canadian arctic. Remote Sensing of Environment 189 84-95. (Published).
• Dolant, C.*, Langlois, A., Brucker, L., Royer, A., Roy, A., Montpetit, B. (2017). Meteorological inventory of Rain-On-Snow events and detection assessment in the Canadian Arctic Archipelagousing microwave radiometry. Physical Geography (Published).
• Chris Derksen, Xiaolan Xu, R. Scott Dunbar, Andreas Colliander, Youngwook Kim, John Kimball, Andrew Black, Eugenie Euskirchen, Alexandre Langlois, Mike Loranty, Philip Marsh, Kimmo Rautiainen, Alexandre Roy and Alain Royer. (2017). Retrieving landscape freeze/thaw state from Soil Moisture Active Passive (SMAP) radar and radiometermeasurements. Remote Sensing of Environment 194 48-62. (Published).
• Ouellet, F.*, Langlois, A., Johnson, C.-A., Richards, A. and Royer, A. (2017). Spatialization of the SNOWPACK Snow Model in the Canadian Arctic for Peary Caribou Winter Grazingconditions Assessment. Physical Geography 17 pages. (Published).
• Côté, K.*, Madore, J.-B.*, and Langlois, A. (2017). Uncertainties in the SNOWPACK multilayer snow model for a Canadian avalanche context: sensitivity to climatic forcing data. Physical Geography 38 (2), 124-142. (Published).
• Larue, F.*, Royer, A., De Sève, D., Langlois, A., Roy, A. and Brucker, L. (2017). Validation of GlobSnow-2 snow water equivalent over Eastern Canada. Remote Sensing of Environment 194 264-277. (Published).
• Dolant, C.*, Langlois, A., Montpetit, B., Brucker, L., Roy, A., and Royer, A. (2016). Empirical development of a rain-on-snow detection algorithm using passive microwave radiometry. Hydrological Processes 13 pages. (Published).
• Roy, A., Royer, A., St-Jean-Rondeau, O.*, Montpetit, B.*, Picard, G., Marchand, N.*, and Langlois, A. (2016). Microwave snow emissionmodeling uncertainties in boreal and subarctic environments. The Cryosphere 10 623-638. (Published).
• Papasodoro, C.*, Royer, A., Langlois, A. and Berthier, E. (2016). Potential of RADARSAT-2 stereo radargrammetry for the generation of glacier digital elevation models. Journal of Glaciology 11 pages. (Published).
• Papasodoro, C.*, Berthier, E., Royer, A., Zdanowic z, C. and Langlois, A.,. (2015). Area, elevation and masschanges of the two southernmost ice caps of the Canadian Arctic Archipelagobetween 1952 and 2014. The Cryosphere 9 1535-1550. (Published).
• Roy A.*, Royer A., Derksen, C., Brucker, L., Langlois, A., Mialond, A., and Kerr, Y. (2015). Evaluation of SpaceborneL-band Radiometer Measurements for Terrestrial Freeze/Thaw Retrievals in Canada. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 8 (9),
• Wang, L., MacKay, M., Brown, R., Harvey, R., and Langlois, A. (2014). Application of satellitedata for evaluating the cold climate performance of the Canadian RegionalClimate model over Québec, Canada. Journal of Hydrometeorology DOI. (Published).
• Langlois, A., Bergeron, J.*, Brown, R., Royer, A., Harvey, R., Roy, A*., Wang, L. and Thériault, N.*. (2014). Evaluation of CLASS 2.7 and3.5 simulations of snow cover from the Canadian Regional Climate Model (CRCM4)over Québec, Canada. Journal of Hydrometeorology 15 (4), 1325-1342. (Published).
• Rutter,N., Sandells, M., Derksen, C., Toose, P., Royer, A., Montpetit, B.*, Langlois, A., Lemmetyinen, J., and Pulliainen, J. (2014). Snow stratigraphicheterogeneity within ground-based passive microwave radiometer footprints:implications for emission modeling. Journal of Geophysical Research DOI.
• Dupont, F.*, Picard, G., Royer, A., Fily, M., Langlois, A., Roy, A.*, and Champollion, N.*. (2013). Modeling the microwaveemission of bubbly ice; Applications to blue ice and superimposed ice in theAntarctic and Arctic. IEEE Transactions on Geosciences and Remote Sensing 52 (10), 6639-6651. (Published).
• Montpetit B.*, Royer, A., Roy, A.*, Langlois, A. and Derksen, C. (2013). Snow microwave emissionmodeling of ice lenses within the snowpack using the Microwave Emission Modelfor Layered Snowpacks (MEMLS). IEEE Transactions on Geoscience and Remote Sensing 51 4705-4717. (Published).
• Roy, A.*, A. Royer, B. Montpetit*, P.A. Bartlett, A. Langlois, 2013. (2013). Snow specific surface areasimulation using the one-layer snow model in the Canadian LAnd Surface Scheme(CLASS). The Cryosphere 7 961-975. (Published).
• Roy, A.*, Royer, A., Wigneron, J.-P., Langlois, A., Bergeron, J.*, Cliche, P. (2012). A simpleparameterization for a boreal forest radiative transfer model at microwavefrequencies. Remote Sensing of Environment 124 DOI. (Published).
• Langlois, A., Royer, A., Derksen, C., Montpetit, B.*, Dupont, F.*, and Goita, K. (2012). Coupling of the snowthermodynamic model SNOWPACK with the Microwave Emission Model for LayeredSnowpacks (MEMLS) for subarctic and arctic Snow Water Equivalent retrievals. Water Resources Research 48 (W12524), (Published).
• Derksen, C., Toose, P., Lemmetyinen, J., Pulliainen, J., Langlois, A., Rutter, N. and Fuller, M.C.*. (2012). Evaluation of passivemicrowave brightness temperature simulations and snow water equivalentretrievals through a winter season. Remote Sensing of Environment 117 236-248. (Published).
• Dupont, F.*, Royer, A., Langlois, A., Gressent, A., Picard, G., Fily, M., Cliche, P., and Chum, M. (2012). Monitoring the melt seasonlength of the Barnes Ice Cap over the 1979-2010 period using active and passivemicrowave remote sensing data. Hydrological Processes 26 (17), 2643-2652. (Published).
• Langlois, A., Royer, A., Dupont, F.*, Roy, A., Goïta, K. and Picard, G. (2011). Improved vegetationcorrections for satellite passive microwave remote sensing using airborneradiometer data. IEEE Transactions on Geoscience and Remote Sensing 49 (10), 3824-3837.
• Montpetit B.*, Royer A., Langlois A., Cliche P., Roy A.*, Champollion N.*, Picard G., Domine F., Obbard R. (2011). New short wave infraredalbedo measurements for snow specific surface area retrieval. Journal of Glaciology 58 (211), DOI. (Published).
• Langlois, A., Royer, A and Goïta, K. (2010). Linkages betweensimulated and spaceborne passive microwave brightness temperatures with in-situmeasurements of snow and vegetation properties. Canadian Journal of Remote Sensing 36 (1), 135-148. (Published).
• Langlois, A., Royer, A., Montpetit, B.*, Picard, G., Brucker, L.*, Arnaud, L., Goïta, K. and Fily, M. (2010). On the relationshipbetween measured and modeled snow grain morphology using infrared reflectance. Cold Regions Science and Technology 61 34-42. (Published).
• Scharien, R.K.*, Geldsetzer, T., Barber, D.G., Yackel, J.J., and Langlois, A.*. (2010). Physical, dielectric, and C-band microwave scattering properties offirst-year sea ice during advanced melt. Journal of Geophysical Research 115 (C12026), DOI. (Published).
• Isleifson, D.*, Langlois, A.*, Barber, D.G. and Shafai, L. (2009). C-Band ScatterometerMeasurement of Multiyear Sea Ice before fall freeze-up in the Canadian Arctic. IEEE Transactions on Geoscience and Remote Sensing 47 (6), 1651-1661. (Published).
• Geldsetzer, T.*, Langlois, A.* and Yackel, J. (2009). Permittivity ofbrine-wetted snow on first-year sea ice at 20 MHz. Cold Regions Science and Technology 58 47-56. (Published).
• Langlois, A., Brucker, L., Kohn, J.*, Royer, A., Derksen, C., Cliche, P., Picard, G., Fily, M. and Willemet, J.M. (2009). Regional Retrieval ofSnow Water Equivalent (SWE) using Thermodynamic Snow Models in Québec, Canada. Journal of Hydrometeorology 10 (6), 1447-1463.
• Langlois, A.* and Barber, D.G. (2008). Advances in seasonalsnow water equivalent (SWE) retrieval using in-situ passive microwavemeasurements over first-year sea ice. International Journal of Remote Sensing 29 (16), 4781-4802. (Published).
• Langlois, A.*, Scharien, R.*, Geldsetzer T.*, Iacozza J., Barber D.G. and Yackel J. 2008. (2008). Estimation of Snow WaterEquivalent over First-Year Sea Ice using AMSR-E and Surface Observations. Remote Sensing of Environment 112 3656-3667. (Published).
• Galley, R.J.*, Trachtenberg, M.*, Langlois, A.*, Barber D.G. and Shafai, L. (2008). Observations ofgeophysical and dielectric properties and ground penetrating radar signaturesfor discrimination of snow, sea ice and freshwater ice thickness. Cold Regions Science and Technology 57 29-38. (Published).
• Langlois, A.*, Fisico, T.*, Barber, D.G. and Papakyriakou, T.N. (2008). The response of snow thermophysical processesto the passage of a polar low-pressure system and its impact on in-situ passivemicrowave data: A case study. Journal of Geophysical Research DOI. (Published).
• Langlois, A.*, Barber, D.G., and Hwang, B.J.*. (2007). Development of a snowwater equivalent algorithm using passive microwave data over first-year sea ice. Remote Sensing of Environment 75-88. DOI. (Published).
• Langlois, A.*, Mundy, C.J.*, Barber, D.G. (2007). Overwintering Evolutionof Geophysical and Electrical Properties of Snow Cover over First-Year Sea Ice. Hydrological Processes 21 (6), 705-716. DOI. (Published).
• Langlois, A.* and Barber, D.G. (2007). Passive Microwave RemoteSensing of Seasonal Snow Covered Sea Ice. Progress in Physical Geography 31 (6), 539-573. DOI. (Published).
• Hwang, B.J.*, Langlois, A., Barber, D.G. and Papakyriakou, T.N. (2006). On detection of thethermophysical state of landfast first-year sea ice from microwave emissionsduring spring melt: Part 1. An in-situ study. Remote Sensing of Environment 111 148-159. DOI. (Published).
• Langlois, A.*, Royer, A., Fillol, E., Frigon, A., and Laprise, R. (2004). Evaluation of the snowcover variation in the Canadian Regional Climate Model over eastern Canadausing passive microwave satellite data. Hydrological Processes 118 1127-1138. (Published).
• Brucker, L.*, Royer, A., Picard, G., Langlois, A. and Fily, M. Hourly simulations of seasonal snow microwave brightness temperatureusing coupled snow evolution-emission models in Québec, Canada. Remote Sensing of Environment 115 1966-1977.
• Roy, A.*, Picard, G., Royer, A., Montpetit, B.*, Dupont, F.*, Langlois, A., and Derksen, C. Snow brightness temperaturesimulations driven by measurements of the specific surface area of snow grains. IEEE Transactions on Geoscience and Remote Sensing DOI. (Published).
• Derksen, C., Smith, S. L., Sharp, M., Brown, L., Howell, S., Copland, L., Muelle, D. R., Gauthier, Y., Fletcher, C., Tivy, A., Bernier, M., Bourgeois, J., Brown, R., Burn, C. R., Duguay, C., Kushner, P., Langlois, A., Lewkowicz, A. G., Royer, A. and Walker, A. Varianility and change inthe canadian cryosphere. Climatic Change DOI.

Articles de magazine

• Langlois, A. and Royer, A. (2009). Variability and Change in the Canadian Cryosphere. Makivik Magazine. 864-5.
• Langlois A., Thomson, B., Oakes J., Imrie D. and Barber D.G. (2007). Community Based Monitoring (CBM), Sea Ice Climate Variability and Change: An Update. ArcticNet Newsletter.

Articles de conférence

• Alexandre Roy; Peter Toose; Chris Derksen; Alain Royer; Alex Mavrovic; Aaron Berg; Lauren Arnold; Matthew Willamson; Tracy Rowlandson; Juha Lemmetyinen; Alexandre Langlois; Erica Tetlock; Oliver Sonnentag. (2016). Analysis of L-Band brightness temperatures response to freeze/thaw in two prairie environments from surface-based radiometer measurements. 2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), (Published).
• Jean-Benoit Madore*, Alexandre Langlois and Kevin Cote*. (2016). Evaluation of SNOWPACK Metamorphism and Microstructure in a Canadian Context: a Case Study for Snow Stability Assessment. International Snow Science Workshop proceedings, 959-964. (Published).
• Alexandre Roy; Alain Royer; Chris Derksen; Alexandre Langlois; Oliver Sonnentag. (2016). Monitoring boreal and arctic freeze/thaw with the first year of SMAP brightness temperatures. 2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad, 82-84. (Published).

Autres contributions

Cours enseignés

• Changements climatiques des régions polaires: outils et enjeux. (2015-03-03 à 2015-04-30).
• Géomatique de la gestion intégrée des eaux. GAE707. (3CR).
• Géomatique et géodéveloppement durable. GAE703. (3CR).
• Géomatique et géorisques. GAE720. (3CR).
• La neige. GEO652. (3CR).
• Principes de géomatique et travaux pratique. ENV330. (3CR).
• Télédétection avancée. GMQ603. (2CR).
• Télédétection optique et radar. GMQ708. (3CR).

Gestion d'évènements

• Chair local organization. (2018) Réunion annuelle du Centre d'études nordiques. (Workshop).
• Co-chair. (2016) NASA snow remote sensing workshop. (Workshop).

Activités de collaboration internationale

• Co-investigator. United Kingdom. Participating in a major UK-Canada collaboration call from the UK government on arctic scientific activities.
• Co-investigator. Sweden. Collaboration between U. of Sherbrooke and U. of Uppsala on studying black carbon impacts from forest fires on snow.
• Principal investigator. United States of America. Principal investigator on a NASA ROSES project. Project entitled:Integration of NASA SnowEx Measurements with a LandSurface Data Assimilation System.
• Principal investigator. France. Collaboration France-Québec funded project on passive microwave radiometry in polar regions.
• Co-investigator. United States of America. Satellite rain-on-snow event detection: a new Earth Observation Satellite product. Project submitted and funded through NASA. L. Brucker is principal investigator of this effort.

Présentations

• Voglimacci-Stephanopoli, J.* Langlois, A., Lantuit, H., Sasseville, V.*, Wendleder, A., Stettner, S. (2020). Caractérisation de l'état du couvert nival arctique à haute résolution au moyen de TerraSAR-X (bande X): étude du cas Qikitaruk-Herschel (Yukon). Annual meeting: Centre d'études nordiques. <, Canada
• Sasseville, V.*, Gautier, C.*, Langlois, A., Théau, J. Johnson, C-A. (2020). Implementation of a habitat quality index for the Peary caribou using snow geophysical properties retrived from satellite remote sensing and modeling. Annual meeting: Centre d’études nordiques. Montreal, Canada
• Blanchette, A.*, Madore, J.B.*, Langlois, A. Billecocq, P.*. (2020). Sensibilité du modèle SNOWPACK à la paramétrisation de la phase de précipitation dans un contexte de stabilité du couvert nival. Annual meeting: Centre d’études nordiques. Montreal, Canada
• Gautier, C.*, Langlois, A., Johnson, C.-A., Sasseville, V.*, Neave, E. (2020). Study of habitat quality along Peary caribou’s migratory routes, using a thermodynamic snow model and indigenous knowledge (IK). Annual meeting: Centre d’études nordiques. Montreal, Canada
• Mavrovic, A.*, Roy, A., Lemmetyinen, J., Langlois, A. Sonnentag, O. (2020). Suivi des flux de carbone hivernaux en régions arctiques par télédétection. Annual meeting: Centre d’études nordiques. Montreal, Canada
• Langlois, A., Johnson, C.-A., Dolant, C.*, Martineau, C.*, Brucker, L. Royer, A. (2019). An Overview of Monitoring Winter Extreme Events using Remote Sensing and Modeling in the Arctic: an Ecological Perspective for Ungulates Habitat Characterization. American Geophysical Union. San Francisco, United States of America
• D. Kramer*, J. Meloche, J.*, Langlois, A., Royer, A., Cliche, P. and McLennan, D. (2019). Describing Arctic snow and ice with a small Ka-band radar. Eastern Snow Conference. Lake Morey, United States of America
• Meloche, J.*, Kramer, D.*, Langlois, A. and Royer, A. (2019). High resolution snow depth mapping with Unmanned Aerial Vehicle (UAV) using Structure-from-Motion (SfM) and kinematic dGPS: Comparison of two methods for arctic application. Eastern Snow Conference. Lake Morey, United States of America
• Holtzman, N., Anderegg, L.D., Kraatz, S., Mavrovic, A.*, Roy, A., Sonnentag, O., Pappas, C., Cosh, M.H., Steiner, N., Langlois, A., Lakhankar, T., Colliander, A., Konings, A.G. (2019). Microwave Radiometry for Remote Sensing of Plant Water Status Dynamics: Stand-Scale Evaluation in a Temperate Deciduous Forest. American Geophysical Union. San Francisco, United States of America
• Couture, G.*, Langlois, A., Howell, S. and Montpetit, B. (2019). Spatiotemporal polynya formation trends in the Canadian Arctic Archipelago using sea ice charts from 1968 onwards. Eastern Snow Conference. Lake Morey, United States of America
• C. Vuyovich A. Langlois A. Roy T. Letcher J. Jacobs J. Parno S. Kraatz Z. Courville E. Cho. (2018). 2018 Hubbard Brook Field Experiment: Snow observations in a north-eastern U.S. forested region. Eastern Snow Conference. Washington, United States of America
• A. Langlois, C. Dolant*, B. Montpetit, L. Brucker, A. Roy, A. Royer. (2018). Changing Arctic Snow Cover: Rain-on-Snow and Ice Layer Detection. International Symposium on Cryosphere and Biosphere. Kyoto, Japan
• D. Kramer* J. Meloche* A. Langlois D. McLennan. (2018). Developing a low-cost DIY unmanned-aerial-vehicle (UAV) for arctic snow and ice monitoring. ArcticNet. Ottawa, Canada
• G. Couture* A. Langlois S. Howell B. Montpetit. (2018). Development of a polynya climatology in the Canadian Arctic Archipelago using RADARSAT imagery from 1997 to 2018. ArcticNet. Ottawa, Canada
• J. Voglimacci* A. Langlois H. Lantuit. (2018). Development of a snow depth mapping approach using radar satellite data and multisource in-situ data. ArcticNet. Ottawa, Canada
• J. Meloche* D. Kramer* A. Langlois. (2018). High resolution mapping of snow depth using UAS and kinematic dGPS in the Canadian Arctic. ArcticNet. Ottawa, Canada
• V. Sasseville* A. Langlois J. Théau A. Royer. (2018). Implementation of a habitat quality index for the Peary caribou using snow geophysical properties retrieved from satellite remote sensing and modeling. ArcticNet. Ottawa, Canada
• A. Royer F. Larue C. Vargel A. Roy A. Langlois V. Vionnet G. Picard E. Cosme. (2018). Improved subarctic and arctic SWE retrieval using passive microwave over Canada. POLAR 2018. Davos, Switzerland
• S. Levasseur* A. Langlois K. Brown. (2018). Modeling snowmelt runoff and analysis of its impact on geochemical elements transport in the Arctic. ArcticNet. Ottawa, Canada
• D. Kramer * A. Langlois A. Royer D. McLennan. (2018). Retrieving ice parameters with a UAV-mounted RADAR. POLAR 2018. Davos, Switzerland
• A. Roy A. Langlois C. Dolant* L. Brucker A. Royer. (2018). SnowEx 2017 In-situ passive microwave measurements: analysis of wet snow microwave emission. International Geoscience and Remote Sensing Symposium. Valencia, Spain
• C. Gautier* A. Langlois C.-A. Johnson C. Martineau*. (2018). Study of habitat quality and migratory patterns of Peary caribou (Rangifer tarandus pearyi) using a thermodynamic model of snow and traditional knowledge. ArcticNet. Ottawa, Canada
• C. Martineau* A. Langlois C.-A. Johnson E. Neave F. Ouellet*. (2017). Adaptation and validation of the SNOWPACK model to Arctic conditions. Eastern Snow Conference. Ottawa, Canada
• L. Brucker A. Langlois and co-authors. (2017). A first overview of SnowEx ground-based remote sensing activities. IEEE International Geoscience and Remote Sensing Symposium. Fort Worth, United States of America
• A. Langlois. (2017). Changements climatiques en Arctique: un regard sur les conditions nivales dans un contexte d’habitat du caribou de Peary. Ouranos seminar series. Montreal, Canada
• C. Dolant* A. Langlois L. Brucker A. Royer A. Roy B. Montpetit. (2017). Detection and evolution of rain-on-snow events in the Canadian Arctic Archipelago using passive microwave radiometry. Eastern Snow Conference. Ottawa, Canada
• J.B. Madore* A. Langlois S. van Wierts S. Borghini. (2017). Identification of snow accumulation zones and cornices using LiDAR Unmanned Aerial Vehicles (UAVs) in an avalanche forecasting context: A case study. Eastern Snow Conference. Ottawa, Canada
• A. Langlois, A. Roy, C. Derksen, J. Lundquist, P. Marsch, R. Kelly, J. Pomeroy, A. Royer, S. Bélair, C. Garnaud, M. Carrera, L. Brucker. (2017). Overview of SnowEx 2017 in-situ passive microwave measurements : a context for SWE assimilation. SnowEx scientific meeting. Longmont, United States of America
• A. Langlois. (2017). Snow Depth retrieval via Unmanned Aerial Vehicles (UAV). Eastern Snow Conference. Ottawa, Canada
• A. Langlois. (2017). Winter extreme events in the arctic: a focus on snow conditions and Peary caribou. Seminar. Vancouver, Canada
• A. Langlois. (2016). 2nd European Snow Science Winter School. Eastern Snow Conference. Columbus, United States of America
• A. Roy P. Toose C. Derksen A. Royer A. Mavrovic A. Berg L. Arnold M. Williamson J. Lemmetyienen A. Langlois E. Teltock O. Sonnentag. (2016). Analysis of L-band brightness temperatures response to freeze/thaw in two prairie environments from surface-based radiometer measurements. IEEE International Geoscience and Remote Sensing Symposium. Beijing, China
• A. Royer N. Marchand C. Ottlé G. Krinner A. Roy A. Langlois. (2016). Continuous ground surface temperature measurements over the Arctic: a key parameter for the monitoring of permafrost evolution. European Space Agency Earth Observation and Cryosphere Science. Prague, Czechia
• A. Langlois, C.-A. Johnson, B. Montpetit, A. Royer, A. Richards, E. Neave, C. Dolant*, A. Roy, G. Arhonditsis, D.K. Kim, S. Kaluskar, L. Brucker. (2016). 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. Eastern Snow Conference. Colombus, United States of America
• C. Dolant* A. Langlois L. Brucker B. Montpetit A. Royer. (2016). Detection of rain-on-snow events in the Canadian Arctic archipelago between 1980-2014 using passive microwave radiometry. Eastern Snow Conference. Colombus, United States of America
• J.B. Madore * A. Langlois. (2016). Evaluation of SNOWPACK metamorphism and microstructure in a Canadian context: A case study for snow stability assessment. International Snow Science Worksop. Breckenridge, United States of America
• A. Langlois. (2016). Le couvert nival arctique en changement : une odyssée de la modélisation à la télédétection. Colloque Annuel du Centre d'Études Nordiques. Trois-Rivières, Canada
• O. St-Jean Rondeau * A. Royer A. Roy A. Langois J.B. Madore*. (2016). Parameterization of snow microstructure for passive microwave radiometry. Eastern Snow Conference. Colombus, United States of America
• F. Larue A. Royer D. De Sève A. Langlois A. Roy O. St-Jean Rondeau*. (2016). Simulations of a Canadian snowpack brightness temperatures using SURFEX-Crocus. European Geosciences Union Spring meeting. Vienna, Austria
• A. Langlois, A. Royer, B. Montpetit, A. Roy. (2016). Snow grain size and shape distributions in northern Canada. American Geophysical Union. San Francisco, United States of America
• A. Langlois. (2016). Update on snow research in Sherbrooke. Snow workshop. Toronto, Canada