Alexandre Roy - - Post-Doctoral Researcher

Contact information

Country of origin: Canada

Education before joining CARTEL:

  • Bachelor's degree in Physical Geography (honours)
  • Master's degree in Environment, research stream (at CARTEL)
  • Doctorate in Remote Sensing (at CARTEL)

Research subject: Monitoring of surface freeze-thaw using passive microwave data from the SMAP (Soil Moisture Active/Passive) mission

Research supervisors: Alain Royer and Chris Derksen (Environment Canada)


Peer-reviewed publications

Submitted:

15. Courtemanche, B., Montpetit, B., Royer, A. and Roy, A. (2014). Creation of a lambertian microwave surface for retrieving the downwelling contribution in ground-based radiometric measurements, IEEE Geoscience and Remote Sensing Letters, submitted (GRSL-01078-2013).

Published:

14. Roy, A., Royer, A. and Hall, R. (2014) Relationship between forest microwave transmissivity and structural parameters for the Canadian boreal forest, IEEE Geoscience and Remote Sensing Letters, Vol. 11, No. 10, p. 1802-1806. pdf

13. Langlois, A., Bergeron, J., Brown, R., Royer, A., Harvey, R., Roy, A., Wang, L. and Thériault, N. (2013) Evaluation of CLASS 2.7 and 3.5 simulations of snow cover from the Canadian Regional Climate Model (CRCM4) over Québec, Canada, Journal of Hydrometeorology, accepted (AMSJHM-S-13-00073).

12. Dupont, F., Picard, G., Royer, A., Fily, M., Roy, A. and 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, Accepted (TGRS_2012-01104).

11. Roy, A., Royer, A., Montpetit, P.A, Bartlett, B. and Langlois (2013). Snow specific surface area simulation using the one-layer snow model in the Canadian Land Surface scheme (CLASS), The Cryopshere, vol.5, p.961-975.

10. Picard, G., Brucker, L., Roy, A., Dupont, F., Fily, M. and Royer, A. (2013). Simulation of the microwave emission of multi-layered snowpacks using the dense media radiative transfer theory: the DMRT-ML model, Geoscientific Model Development, vol. 6, p. 1061-1078.

9. Bergeron, J., Royer, A., Turcotte, R. and Roy, A. (2014). Snow cover estimation using blended MODIS and AMSR-E data for improved watershed-scale spring streamflow forecasts in Québec, Canada, Hydrological Processes, In press (HYP-12-0524).

8. Montpetit, B., Royer, A., Roy, A., Langlois, A. and Derksen, C. (2013). Snow microwave emission modeling of ice lenses within the snowpack using the Microwave emission Model for Layered Snowpacks (MEMLS), IEEE Transactions on Geoscience and Remote Sensing, vol. 51, p. 4705-4717.

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

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

5. Roy, A., 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. vol.124. p.371-383.

4. 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. p.3824-3837.

3. Roy, A., Royer, A., Turcotte, R. (2010). Analyse de l’identification de la fonte de neige printanière avec QuickSCAT dans le Sud du Québec, Canada. Canadian Journal of Remote Sensing. vol.36. p.89-98.

2. Roy, A., Royer, A., Turcotte, R. (2010). Improvement of springtime streamflow in a boreal environment by incorporating snow-covered area derived from remote sensing data. Journal of hydrology. vol.390. p.35-44.

1. Turcotte, R., Fortier-Filion, T.-C., Fortin, V., Roy, A., Royer, A. (2010). Simulation hydrologiques des derniers jours de la crue du printemps : le problème de la neige manquante. Hydrological Sciences Journal. vol.55. p.872-882.

Conferences

  • Roy, A., Royer, A., Derksen, C, Montpetit, B., Langlois, A., Mialon, A., Kerr, Y. (2014) Analysis of Aquarius and SMOS L-band observations of soil freezeing anfd thawing processes over arctic and sub-Arctic regions, MICRORAD 2014, Pasadena, USA, 24-27 March. (Poster)
  • Roy, A., Royer, A., Montpetit, B., Langlois, A. (2012) Models parameterization for SWE retrievals from passive microwave over Canadian boreal forest, AGU fall meeting 2012, San Fransisco, USA, 3-7 December. (oral presentation)
  • Roy, A., Royer, A., Montpetit, B., Picard, G., Morin, S., Langlois, A. (2012). Snow specific surface area using the one-layer CLASS snow model for brightness temperature simulations. 69th Eastern Snow Conference, Frost Valley, USA, 5-7 June. (Poster)
  • Roy, A., Picard, G., Royer, A., Montpetit, B., Langlois, A., Derksen, C. (2012). Snow microstructure representation for snow radiative transfer model from the perspective of SWE retreivals from satellite passive microwave data. MICRORAD 2012, Frascati, Italie, 5-9 March. (oral presentation)
  • Roy, A., Royer, A., Turcotte, R. (2009). Spring floods prediction with the use of remote sensing snow cover area product in Québec. European Geosciences Union General Assembly 2009,Vienne, Austria, 19-24 avril. (oral presentation)

Fieldwork

  • Umiujaq (2014)
  • Inuvik (2013)
  • Baie James, Québec (2013)
  • St-Romain, Québec (2011)
  • Churchill, Manitoba (2010)
  • Sept-îles, Québec (2008)