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Alexandre Langlois


Regular member

Department of Applied Geomatics, Université de Sherbrooke

2500, boul. de l'Université
Université de Sherbrooke
Quebec, Canada
J1K 2R1

819.821.8000 extension 65690



Research Themes

  • Effects of climate change on northern geosystems
  • Monitoring of extreme winter events in the Arctic
  • Remote sensign of arctic snow cover

CEN Students / Postdoctoral fellows

Billecocq, Paul (Doctorate). Alpine snow melt detection using microwave remote sensing in a snowpack stability context.

Blanchette, Alex (Master). Sensitivity of SNOWPACK to precipitation phase parameterization in a snow stability context: case study in Rogers Pass, Glacier National Park, British Columbia, Canada.

Couture, Guillaume (Master). Development of a polynya climatology using RADARSAT imagery in the canadian Arctic.

Crevier, Charlotte (Master). Detection and monitoring of Arctic soil freeze/thaw cycles using C-Band radar data.

Gautier, Coralie (Master). Study of habitat quality and migratory patterns of Peary caribou (Rangifer tarandus pearyi) using a thermodynamic model of snow and traditional knowledge .

Kramer, Daniel (Doctorate). Temporal and spatial snow characterization using high-resolution modeling, microwave remote sensing and UAVs in the Canadian High Arctic.

Laliberté, Jacob (Master). Ice crusts detection and simulation in a snowpack stability context and avalanche risk evaluation in the Chic Choc Mountains.

Levasseur, Simon (Master). Quantification of snowmelt and runoff and the impact on isotope influx in the arctic marine environment: Investigation using the SNOWPACK model.

Madore, Jean-Benoît (Doctorate). Operationalisation and developpement of a snow covert simulation plateform for avalanche risk assessment in Canada in a global warming context.

Martineau, Chloé (Master). Contribution of snow cover simulations of the SNOWPACK model for Peary caribou (Rangifer tarandus pearyi) habitat prediction in the Canadian Arctic Archipelago.

Meloche, Francis (Doctorate - Codirector). Spatial modelling of snow instability at the slope scale in two different snow climates in Canada.

Meloche, Julien (Doctorate). Characterization of arctic snow spatial variability at local scale with remote sensing tools to improve modelisation at global scale.

Sasseville, Vincent (Doctorate). Implementation of a habitat quality index for the Peary caribou using snow geophysical properties retrieved from satellite remote sensing and modeling.

Voglimacci, Joëlle (Master). Development of a snow depth mapping approach using radar satellite data and multisource in-situ data.


Recent CEN theses

Meloche, Francis , 2019 (Master - Codirection). Spatio-temporal variability of snowpack properties in an operational avalanche forecast context, Gaspésie, Canada .

Dolant, Caroline , 2018 (Doctorate). Detection and modeling of rain on snow events in the Canadian Arctic from passive microwave data.

Prince, Michaël , 2018 (Master - Codirection). Northern regions freeze/thaw cycles analysis with L-band passive microwaves remote sensing .

Saint-Jean Rondeau, Olivier , 2018 (Master - Codirection). Modeling of microwave emission related to physical and microstructural properties of snow.

Busseau, Bruno-Charles , 2017 (Master - Codirection). Analysis of snow-vegetation interactions in the low Arctic-Subarctic transition zone (Nunavik).

Côté, Kevin , 2016 (Master). Assessing SNOWPACK simulations of the snow cover using in-situ and forecasted meteorological data in different Canadian climatic regions.

Madore, Jean-Benoît , 2016 (Master). Evaluation of the SNOWPACK model’s metamorphism and microstructure in a Canadian context: A case study for snow stability assessment.

Ouellet, Félix , 2016 (Master). Spatialization of the SNOWPACK Snow Model for the Canadian Arctic to assess Peary caribou winter grazing conditions.


Scientific communications

Mavrovic, A., Madore, J.-B., Langlois, A., Royer, A., Roy, A.R., 2020. Snow liquid water content measurement using an open-ended coaxial probe (OECP). Cold Regions Science and Technology, 171, 102958. DOI: 10.1016/j.coldregions.2019.102958.

Roy, A.R., Toose, P., Mavrovic, A., Pappas, C., Royer, A., Derksen, C., Berg, A., Rowlandson, T., El-Amine, M., Barr, A., Black, A., Langlois, A., Sonnentag, O., 2020. L-Band response to freeze/thaw in a boreal forest stand from ground- and tower-based radiometer observations. Remote Sensing of Environment, 273, 111542. DOI: 10.1016/j.rse.2019.111542.

Vargel, C., Royer, A., Saint-Jean Rondeau, O., Picard, G., Roy, A.R., Sasseville, V., Langlois, A., 2020. Arctic and subarctic snow microstructure analysis for microwave brightness temperature simulations. Remote Sensing of Environment, 242, 11754. DOI: 10.1016/j.rse.2020.111754.

Domine, F., Picard, G., Morin, S., Barrère, M., Madore, J.-B., Langlois, A., 2019. 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(1): 34-33. DOI: 10.1029/2018MS001445.

Prince, M., Roy, A.R., Royer, A., Langlois, A., 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, 111230. DOI: 10.1016/j.rse.2019.111230.

Dolant, C., Langlois, A., Brucker, L., Royer, A., Roy, A.R., Montpetit, B., 2018. Meteorological inventory of rain-on-snow events in the Canadian Arctic Archipelago and satellite detection assessment using passive microwave data. Physical Geography, 39(5): 428-444. DOI: 10.1080/02723646.2017.1400339.

Dolant, C., Montpetit, B., Langlois, A., Brucker, L., Zolina, O., Johnson, C., Royer, A., Smith, P., 2018. Assessment of the Barren Ground caribou die‐off during winter 2015–2016 using passive microwave observations. Geophysical Research Letters, 45(10): 4908-4916. DOI: 10.1029/2017GL076752.

King, J., Derkson, C., Toose, P., Langlois, A., Larsen, C., Lemmetyinen, J., Marsh, P., Montpetit, B., Roy, A.R., Rutter, N., Sturm, M., 2018. The influence of snow microstructure on dual-frequency radar measurements in a tundra environment. Remote Sensing of Environment, 215: 242-254. DOI: 10.1016/j.rse.2018.05.028.

Lyu, H., McColl, K.A., Li, X., Derksen, C., Berg, A., Black, T.A., Euskirchen, E., Loranty, M.M., Pulliainen, J., Rautiainen, K., Rowlandson, T., Roy, A.R., Royer, A., Langlois, A., Stephens, J., Lu, H., Entekhabi, D., 2018. Validation of the SMAP freeze/thaw product using categorical triple collocation. Remote Sensing of Environment, 205: 329-337. DOI: 10.1016/j.rse.2017.12.007.

Madore, J.-B., Langlois, A., Côté, K., 2018. Evaluation of the SNOWPACK model’s metamorphism and microstructure in Canada: a case study. Physical Geography, 39(5): 406-427. DOI: 10.1080/02723646.2018.1472984.

Marchand, N., Royer, A., Krinner, G., Roy, A.R., Langlois, A., Vargel, C., 2018. Snow-covered soil temperature retrieval in Canadian Arctic permafrost areas, using a land surface scheme informed with satellite remote sensing data. Remote Sensing, 10(11), 1703. DOI: 10.3390/rs10111703.

Montpetit, B., Royer, A., Roy, A.R., Langlois, A., 2018. In-situ passive microwave emission model parameterization of sub-arctic frozen organic soils. Remote Sensing of Environment, 205: 112-118. DOI: 10.1016/j.rse.2017.10.033.

Busseau, B.-C., Royer, A., Roy, A.R., Langlois, A., Domine, F., 2017. Analysis of snow-vegetation interactions in the low Arctic-Subarctic transition zone (northeastern Canada). Physical Geography, 38(2): 159-175. DOI: 10.1080/02723646.2017.1283477.

Côté, K., Madore, J.-B., 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. DOI: 10.1080/02723646.2016.1277935.

Derksen, C., Xu, X., Dunbar, R.S., Colliander, A., Kim, Y., Kimball, J.S., Black, T.A., Euskirchen, E., Langlois, A., Loranty, M.M., Marsh, P., Rautiainen, K., Roy, A.R., Royer, A., Stephens, J., 2017. Retrieving landscape freeze/thaw state from Soil Moisture Active Passive (SMAP) radar and radiometer measurements. Remote Sensing of Environment, 194: 48-62. DOI: 10.1016/j.rse.2017.03.007.

Langlois, A., Johnson, C.-A., Montpetit, B., Royer, A., Blukacz-Richards, E.A., Neave, E., Dolant, C., Roy, A.R., Arhonditsis, G., Kim, D.-K., Kaluskar, S., Brucker, L., 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, 189: 84-95. DOI: 10.1016/j.rse.2016.11.006.

Larue, F., Royer, A., DeSève, D., Langlois, A., Roy, A.R., Brucker, L., 2017. Validation of GlobSnow-2 snow water equivalent over Eastern Canada. Remote Sensing of Environment, 194: 264-277. DOI: 10.1016/j.rse.2017.03.027.

Ouellet, F., Langlois, A., Blukacz-Richards, E.A., Johnson, C., Royer, A., Neave, E., Larter, N.C., 2017. Spatialization of the SNOWPACK snow model for the Canadian Arctic to assess Peary caribou winter grazing conditions. Physical Geography, 38(2): 143-158. DOI: 10.1080/02723646.2016.1274200.

Royer, A., Roy, A.R., Montpetit, B., Saint-Jean Rondeau, O., Picard, G., Brucker, L., Langlois, A., 2017. Comparison of commonly-used microwave radiative transfer models for snow remote sensing. Remote Sensing of Environment, 190: 247-259. DOI: 10.1016/j.rse.2016.12.020.

Dolant, C., Langlois, A., Montpetit, B., Brucker, L., Roy, A.R., Royer, A., 2016. Development of a rain-on-snow detection algorithm using passive microwave radiometry. Hydrological Processes, 30(18): 3184-3196. DOI: 10.1002/hyp.10828.

Papasodoro, C., Royer, A., Langlois, A., Berthier, É., 2016. Potential of RADARSAT-2 stereo radargrammetry for the generation of glacier DEMs. Journal of Glaciology, 62(233): 486-496. DOI: 10.1017/jog.2016.44.

Roy, A.R., Royer, A., St-Jean-Rondeau, O., Montpetit, B., Picard, G., Mavrovic, A., Marchand, N., Langlois, A., 2016. Microwave snow emission modeling uncertainties in boreal and subarctic environments. The Cryosphere, 10(2): 623-638. DOI: 10.5194/tc-10-623-2016.

Papasodoro, C., Berthier, É., Royer, A., Zdanowicz, C., Langlois, A., 2015. Area, elevation and mass changes of the two southernmost ice caps of the Canadian Arctic Archipelago between 1952 and 2014. The Cryosphere, 9: 1535-1550. DOI: 10.5194/tc-9-1535-2015.

Roy, A.R., Royer, A., Derksen, C., Brucker, L., Langlois, A., Mialon, A., Kerr, Y.H., 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, 8(9): 4442-4459. DOI: 10.1109/JSTARS.2015.2476358.

Dupont, F., Picard, G., Royer, A., Fily, M., Roy, A.R., Langlois, A., Champollion, N., 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, 52(10): 6639-6651. DOI: 10.1109/TGRS.2014.2299829.

Langlois, A., Bergeron, J., Brown, R., Royer, A., Harvey, R., Roy, A.R., Wang, L., Thériault, N., 2014. Evaluation of CLASS 2.7 and 3.5 simulations of snow properties from the Canadian Regional Climate Model (CRCM4) over Québec, Canada. Journal of Hydrology, 15(4): 1325-1343. DOI: 10.1175/JHM-D-13-055.1.

Rutter, N., Sandells, M., Derksen, C., Toose, P., Royer, A., Montpetit, B., Langlois, A., Lemmetyinen, J., Pulliainen, J., 2014. Snow stratigraphic heterogeneity within ground-based passive microwave radiometer footprints: Implications for emission modeling. Journal of Geophysical Research, 119(3): 550–565. DOI: 10.1002/2013JF003017.

Wang, L., MacKay, M., Brown, R., Bartlett, P., Harvey, R., Langlois, A., 2014. Application of satellite data for evaluating the cold climate performance of the Canadian Regional Climate Model over Québec, Canada. Journal of Hydrometeorology, 15(2): 614–630. DOI: 10.1175/JHM-D-13-086.1.

Montpetit, B., Royer, A., Roy, A.R., Langlois, A., Derksen, C., 2013. Snow microwave emission modeling of ice lenses within a snowpack using the Mircowave Emission Model of Layered Snowpacks (MEMLS). IEEE Transactions on Geoscience and Remote Sensing, 51(9): 4705-4717. DOI: 10.1109/TGRS.2013.2250509.

Roy, A.R., Picard, G., Royer, A., Montpetit, B., Dupont, F., Langlois, A., Derksen, C., Champollion, N., 2013. Brightness temperature simulations of the Canadian seasonal snowpack driven by measurements of the snow specific surface area. IEEE Transactions on Geoscience and Remote Sensing, 51(9): 4692-4704. DOI: 10.1109/TGRS.2012.2235842.

Roy, A.R., Royer, A., Montpetit, B., Bartlett, P.A., Langlois, A., 2013. Snow specific surface area simulation using the one-layer snow model in the Canadian LAnd Surface Scheme (CLASS). The Cryosphere, 7: 961-975. DOI: 10.5194/tc-7-961-2013.

Derksen, C., Smith, S.L., Sharp, M., Brown, L., Howell, S., Copland, L., Mueller, D.R., Gauthier, Y., Fletcher, C., Tivy, A., Bernier, M., Bourgeois, J., Brown, R., Burn, C., Duguay, C., Kushner, P., Langlois, A., Lewkowicz, A., Royer, A., Walker, A., 2012. Variability and change in the canadian cryosphere. Climatic Change, 115(1): 59-88. DOI: 10.1007/s10584-012-0470-0.

Derksen, C., Toose, P., Lemmetyinen, J., Pulliainen, J., Langlois, A., Rutter, N., Fuller, M.C., 2012. Evaluation of passive microwave brightness temperature simulations and snow water equivalent retrievals through a winter season. Remote Sensing of Environment, 117: 236-248. DOI: 10.1016/j.rse.2011.09.021.

Dupont, F., Royer, A., Langlois, A., Gressent, A., Picard, G., Fily, M., Cliche, P., Chum, M., 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, 26(17): 2643–2652. DOI: 10.1002/hyp.9382.

Langlois, A., Royer, A., Derksen, C., Montpetit, B., Dupont, F., Goïta, K., 2012. Coupling the snow thermodynamic model SNOWPACK with the Microwave Emission Model of Layered Snowpacks (MEMLS) for subartic and arctic snow water equivalent retrievals. Water Resources Research, 48(12): W12524. DOI: 10.1029/2012WR012133.

Montpetit, B., Royer, A., Langlois, A., Cliche, P., Roy, A.R., Champollion, N., Picard, G., Domine, F., Obbard, R., 2012. New shortwave infrared albedo measurements for snow specific surface area retrieval. Journal of Glaciology, 58(211): 941-952. DOI: 10.3189/2012JoG11J248.

Roy, A.R., Royer, A., Wigneron, J.-P., Langlois, A., Bergeron, J., Cliche, P., 2012. A simple parameterization for a boreal forest radiative transfer model at microwave frequencies. Remote Sensing of Environment, 124: 371-383. DOI: 10.1016/j.rse.2012.05.020.

Brucker, L., Royer, A., Picard, G., Langlois, A., Fily, M., 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, 115(8): 1966-1977. DOI: 10.1016/j.rse.2011.03.019.

Langlois, A., Royer, A., Dupont, F., Roy, A.R., Goïta, K., Picard, G., 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, 49(10): 3824-3837. DOI: 10.1109/TGRS.2011.2138145.

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