Research topics - Resources - Professional staff

Alain Royer - CARTEL Research member

Full Professor

Contact information

Faculty webpage

Masters project available

Postdoctoral Researchers and Graduate Students

• Yann Blanchard (Doctoral Student)
• Florent Dupont (Doctoral Student)
• Benoît Montpetit (Doctoral Student)
• Alexandre Roy (Doctoral Student)
• Jean Bergeron (Master's Student)

Current research highlights

• Professor Alain Royer presents 30 years of continuous satellite images of the surface temperature of Canada in the Journal of Geophysical Research...

Other activities

• Member of GEC3 (Global Environmental and Climate Change Centre)
  

Publications

2012

Kohn, J. and A. Royer, (2012) Microwave brightness temperature as an indicator of near-surface air temperature over snow in Canadian northern regions. International Journal of Remote Sensing, 33:4, 1126-1138. http://dx.doi.org/10.1080/01431161.2010.550643.

2011

Brucker, L., Royer, A., Picard, G., Langlois, A. and Fily, M. 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, pp. 1966-1977. doi:10.1016/j.rse.2011.03.019
• Langlois, A., Royer, A., Dupont, F., Roy, A., Goïta, K. and 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, Vol. 49(10 PART 2), art. no. 5771614, pp. 3824-3837.
• Toure, A.M., Goïta, K., Royer, A., Kim, E.J., Durand, M., Margulis, S.A., Lu, H. (2011) A case study of using a multilayered thermodynamical snow model for radiance assimilation. IEEE Transactions on Geoscience and Remote Sensing, Vol.49 (8), art. no. 5756663, pp. 2828-2837.

2010

Kohn J. and A. Royer (2010), AMSR-E data inversion for soil temperature estimation under snow cover, Remote Sens. Environ., 114(12), 2951–2961.
• Langlois, A., Royer A. and Goïta, K. (2010). Analysis of simulated and spaceborne passive microwave brightness temperatures using in-situ measurements of snow and vegetation properties, Can. J. Remote Sensing, 36, S135–S148.
• Langlois, A., Royer, A., Montpetit, B., Picard, G., Brucker, L., Arnaud L., Harvey-Collard, P., Fily, M. and Goïta, K. (2010) On the relationship between snow grain morphology and in-situ near infrared calibrated reflectance photographs. Cold Regions Science and Technology, 61, pp. 34-42. doi:10.1016/j.coldregions.2010.01.004
• Roy, A., Royer, A., and Turcotte, R. (2010) Analyse de l'identification de la fonte de neige printanière avec QuickSCAT dans le sud du Québec, Canada, Journal canadien de télédétection, 36(2), pp. 89-98.
• Roy, A., Royer, A., and Turcotte, R. (2010) Improvement of springtime streamflow simulations in a boreal environment by incorporating snow-covered area derived from remote sensing data, Journal of Hydrology, Vol.390, pp.35-44.
• Royer, A. and S. Poirier (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, 115, D08110, DOI:10.1029/2009JD012760.
• Royer, A., K. Goïta, J. Kohn, and D. DeSève (2010). Monitoring dry, wet, and no- snow conditions from microwave satellite observations. IEEE Geos. Remote Sens. Letters, Vol. 7, No. 4, pp. 670-674. DOI: 10.1109/LGRS.2010.2045733
• Turcotte, R., Fortier Filion, T.-C., Lacombe, P., Fortin, V., Roy, A. and Royer, A. (2010) Simulation hydrologique des derniers jours de la crue de printemps: le problème de la neige manquante, Hydrological Sciences Journal, 55(6), 872-882.
  doi: 10.1080/02626667.2010.503933
• Vachon, F., Goïta, K., De Sève, D., and Royer, A. (2010). Inversion of a snow emission model calibrated with in situ data for snow water equivalent monitoring. IEEE Transactions on Geoscience and Remote Sensing, Vol. 48, Issue 1, pp. 59-71, DOI: 10.1109/TGRS.2009.2026892.

2009

Langlois, A., Brucker, L., Kohn, J., Royer, A., Derksen, C., Cliche, P., Picard, G., Willemet, J.M., and Fily, M. (2009). Simulation of Snow Water Equivalent (SWE) using Thermodynamic Snow Models in Québec, Canada. Journal of Hydrometeorology, 10(6), 1447-1462 DOI: 10.1175/2009JHM1154.1
• Toure, A. M., Goïta, K., Royer, A., Mätzler, C. and M. Schneebeli (2009). Near-infrared digital photography to estimate snow correlation length for microwave emission modeling. Applied Optics vol. 47(36), p. 6723-6733, doi :10.1364/AO.47.006723.

2008

Haboudane, D., F. Bonn et A. Royer (2008). Evaluation and predictability of terrain susceptibility to hillslope erosion at the regional scale using dem-derived indices and remotely sensed information. Télédétection, vol. 7, p. 373-391.
• Royer A., F. Becker et P. Gagnon (2008), Trente-cinq ans d'observation de la Terre : de la photographie à l'électromagnétométrie, Télédétection, vol.7, p. 65-88.
• Royer, A., M. Fily, G. Picard (2008). Évolution des températures de surface des régions polaires et subarctiques par télédétection satellite. Lettre PIGB-PMRC France, no 21, Changement global.

2007

Bokoye, A.I., A. Royer, P. Cliche, N. O'Neill, Calibration of Sun Radiometer-Based Atmospheric Water Vapor Retrievals Using GPS Meteorology, Atmo. Ocean. Tech., 24, No 6, 964-979, 2007. DOI: 10.1175/JTECH2011.1
• Mialon, A., Royer, A., Fily, M., Picard, G. (2007). Daily microwave-derived surface temperature over Canada/Alaska. Journal of Applied Meteorology and Climatology, Vol. 46, No. 5, 591–604. DOI: 10.1175/JAM2485.1
• Pardé, M., K. Goïta, A. Royer (2007). Inversion of a passive microwave snow emission model for water equivalent estimation using airborne and satellite data. Remote Sensing of Cryosphere Special Issue of Remote Sensing of Environment, Vol. 111 (2007), p. 346-356.

2005

Mialon, A., Royer, A., Fily, M. (2005). "Wetland Seasonal Dynamics and Interannual Variability over Northern High Latitudes, derived from Microwave Satellite Data". Journal of Geophysical Research - Atmospheres, vol. 110, D17102, doi:10.1029/2004JD005697
• Pardé, M., K. Goïta, A. Royer, F. Vachon (2005). "Boreal Forest Transmissivity in the Microwave Domain Using Ground-Based Measurements". IEEE Geosciences and Remote Sensing Letters. 10.1109/LGRS.2004.842469.
• Royer, A., F. Nerry and F. Chagnon (2005). "Thermal Indetermination: The Problem of Separation of Emissivity and Temperature". Physics in Canada/La Physique au Canada, septembre/octobre 2005, vol. 61, no 5, p. 291-296.

2004

Bertrand, C., A. Royer (2004). "Aerosol optical depth spatio-temporal characterization over the Canadian BOREAS domain". International Journal of Remote Sensing, August 2004, vol. 25, no 15, p. 2903-2917.
• Langlois, A., A. Royer, E. Fillol, A. Frigon and R. Laprise (2004). Evaluation of the snow cover variation in the Canadian Regional Climate Model over eastern Canada using passive microwave satellite data. Hydrological Processes, no 18, p. 1127-1138. DOI: 10.1002/hyp.5514
• O'Neill, N. T., K. B. Strawbridge, S. Thulasiraman, J. Zhang, A. Royer, and J. Freemantle (2004). Optical coherency of sunphotometry, sky radiometry and lidar measurements during the early phase of Pacific 2001. Atmospheric Environment, vol. 38, p. 5887-5894.
• Payan, V. et A. Royer (2004). « Analysis of Temperature Emissivity Separation (TES) algorithm applicability and sensitivity ». International Journal of Remote Sensing, January 2004, vol. 25, no 1, p. 15-37.
• Payan, V. et A. Royer (2004). "Spectral emissivity of northern land cover types derived with MODIS and ASTER sensors in MWIR and LWIR". Research Note, Canadian Journal of Remote Sensing, vol. 30(2), p. 150-156.
• Roy, V., K. Goïta, A. Royer, A.E. Walker, B.E. Goodison (2004). "Snow Water Equivalent Retrieval in a Canadian Boreal Environment From Microwave Measurements Using the HUT Snow Emission Model". IEEE Transactions on Geoscience and Remote Sensing. Sept. 2004, vol. 42, no 9, p. 1850-1859.
• Vachon F., A. Royer, M. Aubé, B. Toubbé, N. T O'Neill and P. M. Teillet (2004). "Remote Sensing of Aerosols over North American Land Surfaces from POLDER and MODIS Measurements". Atmospheric Environment , vol. 38, p. 3501-3515.

2003

Bokoye, A.I., A. Royer, N.T. O'Neill, P. Cliche, L.J.B. McArthur, P.M. Teillet, G. Fedosejevs, J.-M. Thériault (2003). "Multisensor analysis of integrated atmospheric water vapour over Canada and Arctic". Journal of Geophysical Research, vol. 108, no 15, p. 21/1-21/16. doi:10.1029/2002JD002721
• Fily, M., A. Royer, K. Goïta and C. Prigent (2003). "A simple retrieval method for land surface temperature and fraction of water surface determination from satellite microwave brightness temperatures in sub-arctic areas". Remote Sensing of Environment, vol. 85, p. 328 -338. doi:10.1016/S0034-4257(03)00011-7

2002

Bokoye, A.I., A. Royer, N.T. O'Neill and L.J.B.McArthur (2002). "A North American Arctic Aerosol Climatology using Ground-Based Sunphotometry". Arctic, sept. 2002, vol. 55, no 3, p. 215-228.
• Haboudane, D., F. Bonn, S. Sommer, W. Mehl et A. Royer (2002). "Land degradation and erosion risk mapping by fusion of spectrally-based information and digital geomorphometric attributes". International Journal of Remote Sensing, sept. 2002, vol. 23, no 18, p. 3795-3820.
• Nadeau, C., A. Neville, K. Staenz, N.T. O'Neill and A. Royer (2002). "Atmospheric effects on the classification of surface minerals in an arid region using Short-Wave Infrared (SWIR) hyperspectral imagery and a spectral unmixing technique". Canadian Journal of Remote Sensing, déc. 2002, vol. 28, no 6, p. 738-749.
• O'Neill, N. T. , T.F. Eck, B.N. Holben, A. Smirnov, A. Royer et Z. Li, (2002). "Optical properties of Boreal Forest Fire Smoke Derived from Sun photometry", Journal of Geophysical Research, juin 2002, vol. 107, No D 11, p. 6.1-6.19. 10.1029/2001JD000877 Correction
• Royer, A., F. Nerry et F. Bonn (2002). « Proposition d'une nouvelle terminologie : l'infrarouge médian ». Télédétection, mai 2002, vol. 2, no 3, p. 177-182.
• Thulasiraman, S., N.T. O'Neill, A. Royer, B.N. Holben, D. Westphal, L. J. B. McArthur, (2002),. "Sunphotometric observations of the 2001 Asian dust storm over Canada and the U.S.", Geophysical Research Letters, avril 2002, vol. 29, no 8, p. 1255-1258.

2001

Bokoye, A. I., A. Royer, N. T. O'Neill, P. Cliche, G. Fedosejevs, P.M. Teillet and B. McArthur (2001). "Characterization of atmospheric aerosols accross Canada from a ground-based sunphotometer network : AEROCAN". Atmosphere-Ocean (accepté en avril 2001).
• Haboudane, D., F. Bonn, S. Sommer, W. Mehl et A. Royer (2001). "Land degradation and erosion risk mapping by fusion of spectrally-based information and digital geomorphometric attributes". International Journal of Remote Sensing (accepté le 01-07-2000).
• Haboudane, D., F. Bonn, S. Sommer, W. Mehl et A. Royer (2001). "Land degradation and erosion risk mapping by fusion of spectrally-based information and digital geomorphometric attributes". International Journal of Remote Sensing (accepté le 01-07-2000).
• O'Neill, N.T., T.F. Eck, B.N. Holben, A. Smirnov, O. Dubovik and A. Royer (2001). Bimodal size distribution influences on the variation of Angstrom derivatives in spectral and optical depth space. Journal of Geophysical Research, Vol. 106, No. D9, p. 9787-9806.
• Royer, A., F. Nerry et F. Bonn (2001). « Proposition d'une nouvelle terminologie : infrarouge médian ». Télédétection. (accepté début 2001).

2000

Fedosejevs, G.; O'Neill, N. T.; Royer, A.; Teillet, P. M.; Bokoye A. I. and McArthur, B. (2000). "Aerosol Optical Depth for Atmospheric Correction of AVHRR Composite Data". Canadian Journal of Remote Sensing vol. 26 no 4, p. 273-284.
• Vallée, G., A. Royer, P. Cliche and F. Nerry (2000). "Potential of Thermal Infrared Multispectral Emissivity Measurements for Monitoring soil Moisture content by Remote Sensing". International Journal of Remote Sensing (accepté début 2001).

1999

Romanov, P., N.T. O'Neill, A. Royer et B. McArthur (1999). "Simultaneous retrieval of aerosol refractive index and particle size distribution from ground based measurements of direct and scattered solar radiation". Applied Optics, vol. 38, No 36, pp. 7305-7320.
• Zagolski, F., N.T. O'Neill, A. Royer and J. Miller (1999). "Validation of a DDV-based aerosol depth retrieval algorithm using multialtitude spectral imagery". Journal of Geophysical Research-Atmospheres, 104 (D22), pp. 27959-27971..

1998

Bergeron, M., N.T. O'Neill, A. Royer et P.M. Teillet (1998). "Development of a spectral Error Model for Surface Bidirectional Reflectance Factor (BRF) Retrieval". Canadian Journal of Remote Sensing, vol 24, no 2, p. 128-132, juin 1998.
• Molineaux, B., A. Royer and N.T. O'Neill (1998). "Retrieval of Pinatubo aerosol optical depth and surface bidirectional reflectance from six years of AVHRR Global Vegetation Index data over boreal forests". Journal of Geophysical Research, vol. 103, no. D2, p. 1847-1856.
• Traoré , P.C.S., A. Royer and K. Goïta (1998). "Land surface temperature time series derived from weekly AVHRR GVI composite datasets : potential and constraints for northern latitudes". Canadian Journal of Remote Sensing, vol. 23, no. 4, p. 390-400.

1997

Goïta, K., A. Royer and N. Bussières (1997). "Characterization of land surface thermal structure from NOAA-AVHRR data over a northern ecosystem". Remote Sensing of Environment, vol. 60, p. 282-298.
• Goïta, K. and A. Royer (1997). "Surface temperature and emissivity separability over land surface from combined TIR and SWIR AVHRR data" IEEE Transactions on Geoscience and Remote Sensing, vol. 35, no 3, p. 718-733.
• O'Neill, N.T., F. Zagolski, M. Bergeron, A. Royer, J.R. Miller and J. Freemantle (1997) Atmospheric correction validation of CASI images acquired over the BOREAS southern study area. Journal canadien de télédétection, vol. 23, no 2, p. 143-162. article figs tables&captions
• O'Neill, N.T., A. Royer, Q.F. Xu and P.M. Teillet (1997). "Retrieval of atmospheric optical parameters from airborne flux measurements: application to the atmospheric correction of imagery". Applied Optics, vol. 36, no. 3, p. 662-674.
• Royer, A., K. Goïta, C. Ansseau, A. Faizoun et G. Saint (1997). "Analysis of Boreal Forest Dynamics Using the Global Vegetation Index". Remote Sensing Reviews, vol. 15, p. 265-282.
• Soufflet, V., D. Tanré, A. Royer and N.T. O'Neill (1997). "Remote sensing of aerosols over boreal forest and lake water from AVHRR data". Remote Sensing of Environment, vol. 60, p. 22-34.

1996

Smirnov, A., N.T. O'Neill, A. Royer, A. Tarussov and B. McArthur (1996). "Aerosol optical depth over Canada and the link with synoptic air mass types". Journal of Geophysical Research, vol. 101, no D14, p. 19299-19318.

1995

Smirnov, A., Y.V. Villevalde, N.T. O'Neill, A. Royer and A. Tarussov (1995). "Aerosol optical depth over the oceans: analysis in terms of synoptic air mass types". Journal of Geophysical Research, vol. 100, no. D8, p. 16639-16650.
• Viau, A., A. Royer, C. Ansseau et J. Boivin (1995). « Analyse régionale de simulations climatiques au Québec du modèle de circulation générale du Centre climatique canadien ». Atmosphère-Océan, vol. 33, no 3, p. 389-406.

1994

Deblonde, G., M. Penner and A. Royer (1994). "Measuring leaf area index with the LI-COR LAI-2000 in pine stands". Ecology, vol. 75, no. 5, p. 1507-1511.
• Goïta, K., R. Gonzales-Rubio, G.B. Bénié, A. Royer et F. Michaud (1994). « Une revue de littérature des réseaux neuromimétiques et des systèmes à base de connaissances dans l'analyse et l'interprétation d'images en télédétection ». Revue canadienne de génie électrique et informatique, vol. 19, no 2, p. 53-61.
• Lanciault, P., A. Royer et C. Ansseau (1994). « Relations entre la réflectance spectrale satellitaire et les paramètres forestiers de la forêt boréale québécoise ». Journal canadien de télédétection, vol. 20, no 2, p. 116-122.
• Smirnov, A., A. Royer, N.T. O'Neill and A. Tarussov (1994). "A study of the link between synoptic air mass type and atmospheric optical parameters". Journal of Geophysical Research, vol. 99, no D10, p. 20967-20982.

Books

2006

• Bonn, F., Rochon, G., et Royer, A. (2006). « Précis de télédétection », vol. 1, 2e édition, PUQ-AUF, 500 pages.

1996

• Achard, F., C. Ansseau, J. Beaubien, F. Bonn, P. Defourny, A. Jaton, A. Royer et K. Thomson (1996). La télédétection des forêts, in Bonn, F. (réd.) Précis de télédétection : volume 2 - Applications thématiques, Presses de l'Université du Québec/AUPELF, Ste-Foy et Montréal, pp. 225-265.
• Seguin, B, A. Royer, G.-H. Lemieux et F. Bonn (1996). La télédétection appliquée à l'étude de l'atmosphère et du climat, in Bonn, F. (réd.) Précis de télédétection : volume 2 - Applications thématiques, Presses de l'Université du Québec/AUPELF, Ste-Foy et Montréal, pp. 139-158.

1994

• Bonn, F. et A. Royer (1994). SIG et environnement: l'apport des données spatiales, Université d'été internationale ìEspace et Environnementî, CNES, Brest (France), coll. Enseignement et espace, Dépaduès-Éditions, pp. 239-266.
• Royer, A., C. Ansseau, A. Viau, A. Thériault, F. Bonn, N.T. O'Neill, H.B. Granberg, B. Singh, P. Schuepp, J. Beaubien et J. Cihlar (1994). Impact des changements de l'environnement global sur la forêt boréale au Québec, in Bonn, F.J. (éd.), Télédétection de l'environnement dans l'espace francophone, Presses de l'Université du Québec et ACCT, pp. 305-330.