Alexandre Langlois
Regular member
Department of Applied Geomatics
University of Sherbrooke


Paul Billecocq (Ph.D. student)

Érika Boisvert-Vigneault (Master student)

Guillaume Couture (Master student)

William Durand (Master student)

Élise Groulx-Maurer (Master student)

Daniel Kramer (Ph.D. student)

Josée-Anne Langlois (Ph.D. student)

Jean-Benoît Madore (Ph.D. student)

Julien Meloche (Postdoctoral fellow)

Antoine Rolland (Master student)

Vincent Sasseville (Ph.D. student)


Alex Gélinas (Ph.D. student)

Estéban Hamel Jomphe (Ph.D. student)

Benjamin Imbach (Master student)

Adèle Joyeux (Ph.D. student)

Francis Meloche (Ph.D. student)

Recent Theses and Dissertations

Charlotte Crevier (Master - 2022)
Detection of ground active layer freeze/thaw cycle in arctic tundra environment from multisensor C-Band synthetic apperture radar (SAR)

Julien Meloche (Doctorate - 2021)
Improvement of Arctic snow and soil characterization to improve the snow water equivalent prediction in microwave remote sensing

Joëlle Voglimacci (Master - 2021)
Potential of X-band polarimetric SAR copolar phase difference for Arctic snow depth estimation

Alex Blanchette (Master - 2021)
Sensitivity of SNOWPACK to precipitation phase parameterization in a snow stability context: case study in Rogers Pass, Glacier National Park, British Columbia, Canada

Coralie Gautier (Master - 2021)
Evaluation of Peary caribou (Rangifer tarandus pearyi) habitat conditions and migratory patterns using remote sensing, snow modelling and traditional knowledge

Jacob Laliberté (Master - 2020)
Retrieving dry snow stratigraphy using a versatile low-cost frequency modulated continuous wave (FMCW) K-band radar

Simon Levasseur (Master - 2020)
Measurement of the physical properties and analysis of the geochemical composition of snow cover in arctic and subarctic regions to improve the hydrological modeling

Chloé Martineau (Master - 2020)
Coupling the habitat modeling program MaxEnt with snow cover simulations to improve the prediction of the presence of Peary caribou

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

Scientific Communications

Crevier, C., Langlois, A., Roy, A.R., Derksen, C., 2022. A Multisensor C-band Synthetic Aperture Radar (SAR) Approach to Retrieve Freeze/Thaw Cycles in Low Arctic Environments: A Spatial Variability Assessment. <strong>Remote Sensing of Environment</strong>.

Laliberté, J., Langlois, A., Royer, A., Madore, J.-B., Gauthier, F., 2022. Retrieving dry snow stratigraphy using a versatile low-cost frequency modulated continuous wave (FMCW) K-band radar. <strong>Physical Geography</strong>, 43(3): 308-332. DOI: <a href="" target="_blank">10.1080/02723646.2021.2008104</a>.

Martineau, C., Langlois, A., Gouttevin, I., Neave, E., Johnson, C., 2022. Improving Peary caribou presence redictions in MaxEnt using spatialized snow simulations. <strong>Arctic</strong>, 75(1): 55-71. DOI: <a href="" target="_blank">10.14430/arctic74868</a>.

Meloche, J., Langlois, A., Rutter, N., McLennan, D., Royer, A., Billecocq, P., Ponomarenko, S., 2022. High-resolution snow depth prediction using Random Forest algorithm with topographic parameters: A case study in the Greiner watershed, Nunavut. <strong>Hydrobiologia</strong>, 36(3), e14546. DOI: <a href="" target="_blank">10.1002/hyp.14546</a>.

Meloche, J., Langlois, A., Rutter, N., Royer, A., King, J., Walker, B., Philip, M., Wilcox, E., 2022. Characterizing tundra snow sub-pixel variability to improve brightness temperature estimation in satellite SWE retrievals. <strong>The Cryosphere</strong>, 16(1): 87-101. DOI: <a href="" target="_blank">10.5194/tc-16-87-2022</a>.

Voglimacci, J., Wendleder, A., Lantuit, H., Langlois, A., Stettner,., Schmitt, A., Roth, A., Dedieu, J.-P., Royer, A., 2022. Potential of X-band polarimetric SAR co-polar phase difference for arctic snow depth estimation. <strong>The Cryosphere</strong>, 16(6): 2163-2181. DOI: <a href="" target="_blank">10.5194/tc-2021-314</a>.

Holtzman, N.M., Anderegg, L.D.L., Kraatz, S., Mavrovic, A., Sonnentag, O., Pappas, C., Cosh, M.H., Langlois, A., Lakhankar, T., Tesser, D., Steiner, N., Colliander, A., Roy, A.R., Konings, A.G., 2021. L-band vegetation optical depth as an indicator of plant water potential in a temperate deciduous forest stand. <strong>Biogeosciences</strong>, 18(2): 739–753. DOI: <a href="" target="_blank">10.5194/bg-18-739-2021</a>.

Letcher, T., Vuyovich, C., Langlois, A., Roy, A.R., 2021. Understanding uncertainty of snow radiative transfer modeling within a mixed deciduous and evergreen forest. <strong>IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing</strong>, 14: 8225-8235. DOI: <a href="" target="_blank">10.1109/JSTARS.2021.3099944</a>.

Levasseur, S., Brown, K., Langlois, A., McLennan, D., 2021. Measurement of snow physical properties and stable isotope variations in the canadian sub-arctic and arctic snowpack. <strong>Atmosphere-Ocean</strong>, 59(3): 137-151. DOI: <a href="" target="_blank">10.1080/07055900.2021.1962240</a>.

Meloche, J., Royer, A., Langlois, A., Rutter, N., Sasseville, V., 2021. Improvement of microwave emissivity parameterization of frozen Arctic soils using roughness measurements derived from photogrammetry. <strong>International Journal of Digital Earth</strong>, 14(10: Remote Sensing Experiments for Earth System Science): 1380-1396. DOI: <a href="" target="_blank">10.1080/17538947.2020.1836049</a>.

Royer, A., Domine, F., Roy, A.R., Langlois, A., Marchand, N., Davesne, G., 2021. New northern snowpack classification linked to vegetation cover on a latitudinal mega-transect across northeastern Canada. <strong>Écoscience</strong>, 28(3-4): 225-242. DOI: <a href="" target="_blank">10.1080/11956860.2021.1898775</a>.

Royer, A., Picard, G., Vargel, C., Langlois, A., Gouttevin, I., Dumont, M., 2021. Improved simulation of arctic circumpolar land area snow properties and soil temperatures. <strong>Frontiers in Earth Science</strong>, 9, 685140. DOI: <a href="" target="_blank">10.3389/feart.2021.685140</a>.

Royer, A., Roy, A.R., Jutras, S., Langlois, A., 2021. Review article: Performance assessment of radiation-based field sensors for monitoring the water equivalent of snow cover (SWE). <strong>The Cryosphere</strong>, 15: 5079-5098. DOI: <a href="" target="_blank">10.5194/tc-15-5079-2021</a>.

Langlois, A., Royer, A., Montpetit, B., Roy, A.R., Durocher, M., 2020. Presenting snow grain size and shape distributions in northern Canada using a new photographic device allowing 2D and 3D representation of snow grains. <strong>Frontiers in Earth Science</strong>, 7, 347. DOI: <a href="" target="_blank">10.3389/feart.2019.00347</a>.

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). <strong>Cold Regions Science and Technology</strong>, 171, 102958. DOI: <a href="" target="_blank">10.1016/j.coldregions.2019.102958</a>.

Pomerleau, P., Royer, A., Langlois, A., Cliche, P., Courtemanche, B., Madore, J.-B., Picard, G., Lefebvre, É., 2020. Low cost and compact FMCW 24 GHz radar applications for snowpack and ice thickness measurements. <strong>Sensors</strong>, 20(14), 3909. DOI: <a href=" " target="_blank">10.3390/s20143909 </a>.

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. <strong>Remote Sensing of Environment</strong>, 273, 111542. DOI: <a href="" target="_blank">10.1016/j.rse.2019.111542</a>.

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. <strong>Remote Sensing of Environment</strong>, 242, 11754. DOI: <a href="" target="_blank">10.1016/j.rse.2020.111754</a>.

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. <strong>Journal of Advances in Modeling Earth Systems</strong>, 11(1): 34-33. DOI: <a href="" target="_blank">10.1029/2018MS001445</a>.

Kaluskar, S., Blukacz-Richards, E.A., Johnson, C., He, Y., Langlois, A., Kim, D.-K., Arhonditsis, G., 2019. Development of a model ensemble to predict Peary caribou populations in the Canadian Arctic Archipelago. <strong>Ecosphere</strong>, 10(12), e02976. DOI: <a href="" target="_blank">10.1002/ecs2.2976</a>.

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. <strong>Remote Sensing of Environment</strong>, 231, 111230. DOI: <a href="" target="_blank">10.1016/j.rse.2019.111230</a>.

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. <strong>Physical Geography</strong>, 39(5): 428-444. DOI: <a href="" target="_blank">10.1080/02723646.2017.1400339</a>.

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. <strong>Geophysical Research Letters</strong>, 45(10): 4908-4916. DOI: <a href="" target="_blank">10.1029/2017GL076752</a>.

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. <strong>Remote Sensing of Environment</strong>, 215: 242-254. DOI: <a href="" target="_blank">10.1016/j.rse.2018.05.028</a>.

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. <strong>Remote Sensing of Environment</strong>, 205: 329-337. DOI: <a href="" target="_blank">10.1016/j.rse.2017.12.007</a>.

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

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. <strong>Remote Sensing</strong>, 10(11), 1703. DOI: <a href="" target="_blank">10.3390/rs10111703</a>.

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

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). <strong>Physical Geography</strong>, 38(2): 159-175. DOI: <a href="" target="_blank">10.1080/02723646.2017.1283477</a>.

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. <strong>Physical Geography</strong>, 38(2): 124-142. DOI: <a href="" target="_blank">10.1080/02723646.2016.1277935</a>.

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. <strong>Remote Sensing of Environment</strong>, 194: 48-62. DOI: <a href="" target="_blank">10.1016/j.rse.2017.03.007</a>.

Langlois, A., 2017. Changements climatiques en Arctique: un regard sur les conditions nivales dans un contexte d’habitat du caribou de Peary. Ouranos seminar series. Montréal, Québec, Canada.

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. <strong>Remote Sensing of Environment</strong>, 189: 84-95. DOI: <a href="" target="_blank">10.1016/j.rse.2016.11.006</a>.

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

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. <strong>Physical Geography</strong>, 38(2): 143-158. DOI: <a href="" target="_blank">10.1080/02723646.2016.1274200</a>.

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. <strong>Remote Sensing of Environment</strong>, 190: 247-259. DOI: <a href="" target="_blank">10.1016/j.rse.2016.12.020</a>.

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. <strong>Hydrological Processes</strong>, 30(18): 3184-3196. DOI: <a href="" target="_blank">10.1002/hyp.10828</a>.

Langlois, A., Royer, A., 2016. Le couvert nival arctique en changement: une odyss&eacute;e de la mod&eacute;lisation &agrave; la t&eacute;l&eacute;d&eacute;tection. Colloque du CEN 2016, Université du Québec à Trois-Rivières. Trois-Rivières, Québec, Canada.

Larue, F., Royer, A., DeSève, D., Langlois, A., Roy, A.R., Saint-Jean Rondeau, O., 2016. Assimilation des observations satellitaires micro-onde passives AMSR-2 dans un mod&egrave;le de neige. Colloque du CEN 2016, Université du Québec à Trois-Rivières. Trois-Rivières, Québec, Canada.

Madore, J.-B., Côté, K., Langlois, A., 2016. Am&eacute;lioration de la mod&eacute;lisation de la taille de grain de neige du mod&egrave;le SNOWPACK: implication dans l&rsquo;&eacute;valuation des risques d&rsquo;avalanches. Colloque du CEN 2016, Université du Québec à Trois-Rivières. Trois-Rivières, Québec, Canada.

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

Roy, A.R., Royer, A., Derksen, C., Toose, P., Brucker, L., Mialon, A., Langlois, A., Kerr, Y., 2016. L&rsquo;utilisation de la radiom&eacute;trique micro-onde satellitaire pour le suivi du gel/d&eacute;gel des surfaces nordiques. Colloque du CEN 2016, Université du Québec à Trois-Rivières. Trois-Rivières, Québec, Canada.

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. <strong>The Cryosphere</strong>, 10(2): 623-638. DOI: <a href="" target="_blank">10.5194/tc-10-623-2016</a>.

Saint-Jean Rondeau, O., Royer, A., Roy, A.R., Langlois, A., Madore, J.-B., 2016. Param&eacute;trisation de la microstructure du manteau neigeux pour la radiom&eacute;trie micro-onde. Colloque du CEN 2016, Université du Québec à Trois-Rivières. Trois-Rivières, Québec, Canada.

Côté, K., Madore, J.-B., Langlois, A., 2015. Am&eacute;lioration de la pr&eacute;diction du risque d&rsquo;avalanche &agrave; l&rsquo;aide du mod&egrave;le SNOWPACK au Canada. Colloque du CEN 2015. Québec, Québec, Canada.

Langlois, A., 2015. Applications of the PR series radiometers for cryospheric and soil moisture research. 40 pages.

Langlois, A., 2015. &Eacute;tudier la neige &agrave; l&rsquo;&eacute;chelle globale: pourquoi et comment? Centre d’études nordiques, Université du Québec à Rimouski. Rimouski, Québec, Canada.

Langlois, A., 2015. Les changements climatiques dans l&rsquo;Arctique: les enjeux. Hotel Le Président. Sherbrooke, Québec, Canada.

Langlois, A., 2015. The truth about Arctic climate change: what is at stake? Champlain College. Lennoxville, Québec, Canada.

Langlois, A., 2015. Winter extreme events in the arctic: a focus on snow conditions and Peary caribou. Séminaire du Laboratoire de Glaciologie et Géophysique de l'environnement (LGGE), Université Joseph-Fourier. Grenoble, France.

Madore, J.-B., Côté, K., Langlois, A., 2015. Am&eacute;lioration de la mod&eacute;lisation de la taille de grain de neige du mod&egrave;le multi couche thermodynamique SNOWPACK. Colloque du CEN 2015. Québec, Québec, Canada.

Marchand, N., Roy, A.R., Larue, F., Dolant, C., St-Jean, O., Montpetit, B., Langlois, A., Royer, A., 2015. Suivi du couvert nival et du gel au sol par t&eacute;l&eacute;d&eacute;tection micro-onde. Colloque du CEN 2015. Québec, Québec, Canada.

Ouellet, F., Langlois, A., Royer, A., Johnson, C.A., Richards, A., 2015. Spatialisation du mod&egrave;le de couvert nival SNOWPACK dans le Nord canadien pour l&rsquo;&eacute;tude de l&rsquo;acc&egrave;s &agrave; la nourriture du caribou de Peary. Colloque du CEN 2015. Québec, Québec, Canada.

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. <strong>The Cryosphere</strong>, 9: 1535-1550. DOI: <a href="" target="_blank">10.5194/tc-9-1535-2015</a>.

Papasodoro, C., Royer, A., Langlois, A., Berthier, É., 2015. St&eacute;r&eacute;o-radargramm&eacute;trie RADARSAT-2 et st&eacute;r&eacute;o-optique pl&eacute;iades pour le suivi de la fonte des calottes glaciaires de l&rsquo;&Icirc;le de Baffin, NU. Colloque du CEN 2015. Québec, Québec, Canada.

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. <strong>IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing</strong>, 8(9): 4442-4459. DOI: <a href="" target="_blank">10.1109/JSTARS.2015.2476358</a>.

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. <strong>IEEE Transactions on Geoscience and Remote Sensing</strong>, 52(10): 6639-6651. DOI: <a href="" target="_blank">10.1109/TGRS.2014.2299829</a>.

Langlois, A., 2014. Winter extreme events in the arctic: a focus on rain-on-snow (ROS) events and Peary caribou. Environnement Canada. Ottawa, Ontario, Canada.

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 Qu&eacute;bec, Canada. <strong>Journal of Hydrology</strong>, 15(4): 1325-1343. DOI: <a href="" target="_blank">10.1175/JHM-D-13-055.1</a>.

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. <strong>Journal of Geophysical Research</strong>, 119(3): 550–565. DOI: <a href="" target="_blank">10.1002/2013JF003017</a>.

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 Qu&eacute;bec, Canada. <strong>Journal of Hydrometeorology</strong>, 15(2): 614–630. DOI: <a href="" target="_blank">10.1175/JHM-D-13-086.1</a>.

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