Retour en haut

Jean-Pierre Dedieu

Expertises

Télédétection de la Cryosphère , Géomatique , Hydrologie et Climatologie Nordique

  • Professeur associé

Établissement d’attache
Université du Québec à Trois Rivières (UQTR)
Département des Sciences de l’Environnement

Courriel
jean-pierre.dedieu@inrs.ca

Centre Eau Terre Environnement

490, rue de la Couronne
Québec (Québec)  G1K 9A9
CANADA

Voir le centre

Intérêts de recherche

Mes travaux portent sur l’application de la télédétection spatiale optique et radar actif (SAR) dans les régions de hautes latitudes (Arctique) et de hautes altitudes (Himalaya, Alpes) pour le suivi de la couverture nivale saisonnière et des bilans glaciaires, dans le contexte de l’impact du changement climatique global. Les projets scientifiques sont portés à l’échelle locale et régionale, en particulier au nord Québec (Nunavik) pour l’hydrologie et en lien avec la dynamique de la couverture végétale.

  • Sc. et Ph. D. Sciences géographiques, Université de Grenoble (France)
  • Diplôme d’Ingénieur en géomatique, ENSG, Paris (France)
  • Chargé de Recherche hors-classe CNRS 1986-2024 (France)
  • Professeur associé à l’Université du Québec à Trois Rivières (UQTR)
  • Membre du Centre d’études nordiques
  • Membre de l’Association québécoise de télédétection
  • Programme pluridisciplinaire « Imalirijiit » au Nunavik, UQTR, Québec
  • Laboratoire Mixte International « Water-Himal » France-Népal

14 Projets internationaux depuis 2005 en télédétection de la cryosphère : Agence Spatiale Européenne (ESA), France (CNES), Allemagne (DLR), Canada (CSA).

Systèmes d’information géographique et télédétection

Maîtrises, Doctorats et Post-Doctorats de l’Université de Grenoble et Ecoles d’Ingénieurs ENSG, INSA, ESGT (France). Encadrement de stagiaires INRS-ETE.

Publications

2024

Barrou Dumont, Z., Gascoin, S., Inglada, J., Dietz, A., Köhler, J., Lafaysse, M., Monteiro, D., Carmagnola, C., Bayle, A., Dedieu, J.-P., Hagolle, O., and Choler, P. : Trends in the annual snow melt-out day over the French Alps and the Pyrenees from 38 years of high resolution satellite data (1986–2023), EGUsphere [preprint], https://doi.org/10.5194/egusphere-2024-3505

 

Champagne O., Zolina O., Dedieu J.P., Wolff M., and Jacobi H.W. : Artificial trends or real changes ? Investigating precipitation records in Ny-Alesund, Svalbard. Journal of Hydrometeorology, 25 (4), 809-825, 2024 ; https://doi.org/10.1175/JHM-D-23-0182.1

 

Margison H., MacMillan G.A., Wauthy M., Sicaud E., Gérin-Lajoie J., Dedieu J.P., and Amyot M. : Drivers of rare earth elements (REEs) and radionuclides in changing subarctic surface waters near a mining project (Nunavik, Canada). Journal of Hazardous Materials ; HAZMAT_134418, 471, 2024 ; https://doi.org/10.1016/j.jhazmat.2024.134418

 

2023

Sicaud E., Fortier D., Dedieu J.P., and Franssen J. : Pairing remote sensing and clustering in landscape hydrology for large-scale changes identification. Applications to the subarctic watershed of the George River (Nunavik, Canada), Hydrol. Earth Syst. Sci., 28 (1), 65-86 ; https://doi.org/10.5194/hess-28-65-2024.

 

2022

Bayle A., Roy A., Dedieu J.P., Boudreau S., Choler P., Lévesque E. Two distinct waves of greening in north-eastern Canada : summer warming does not tell the whole story. Environmental Research Letters, 17 (6), 064051, 2022 ; https://doi.org/10.1088/1748-9326/ac74d6

 

Bessin Z., Dedieu J.P., Arnaud Y., Wagnon P., Brun F., Esteves M., Perry B., Mattews T. Processing of VENuS images in high mountain context ; case-study for cryospheric and hydro-climatic application in the Everest region (Nepal). Remote Sensing, 2022, 14 (5), 1098 ; https://doi.org/10.3390/rs14051098

 

Voglimacci-Stephanopoli J., Wendeler A.,Lantuit H., Langlois A., Stettner S., Dedieu J.P., Roth A., Royer A. Potential of X-band polarimetric SAR co-polar phase difference for Arctic snow depth estimation. The Cryosphere, 16 (6), 2163-2181, 2022 ; https://doi.org/10.5194/tc-16-2163-2022

 

2021

El-Alem A., Chokmani K.,Venkatesan A., Lhissou R., Agili H., Dedieu J.P.. How accurate is an unmanned aerial vehicle data-based model applied on satellite imagery for chlorophyll-a estimation in freshwater bodies ? Remote Sensing, 13 (6), 1134, 2021 ; https://doi.org/10.3390/rs13061134

 

2020

El-Alem A., Chokmani K.,Venkatesan A., Lhissou R., Agili H., Dedieu J.P.. A drone-based regional model to retrieve chlorophyll-a from Sentinel-2 imagery in freshwater bodies. Canadian Space Agency, S-20-02872, 2020 ; https://espace.inrs.ca/id/eprint/7634

 

2019

Bouchard B., Eeckman J., Dedieu J.P., Delclaux F., Chevallier P., Gascoin S., Arnaud Y. On the interest of optical remote sensing for snow melt seasonal adaptive parametrization. Application to the Everest region (Nepal). Remote Sensing, 11 (22), 2598, 2019 ; https://doi.org/10.3390/rs1122259

 

2018

Masson T., Dumont M., Dalla-Mura M., Sirguey P., Gascoin S., Dedieu J.P., Chanussot J. Assessment of existing methodologies to retreive snow cover fraction from MODIS data. Remote Sensing, 10 (4), 619, 2018 ; https://doi.org/10.3390/rs10040619

 

Gérin-Lajoie J., Herrmann T., Hébert-Houle E., MacMillan G., Monfette M., Rowelle J., Soucie T., Snowball H., Townley E., Lévesque E., Dedieu J.P., Franssen J., Amyot M. IMALIRIJIIT : a collaborative monitoring program in the George River Watershed, Nunavik Canada. Ecoscience, 25 (4), 381-399, 2018 ; https://doi.org/10.1080/11956860.2018.1498226

.

  1. Bernier, S. Blangy, N. Bhiry, Dedieu J.P., E. Avard, S. Bastian, N. Bhiry, L. Chanteloup, V. Coxam, A. Decaulne,, C. Desbiens, J. Gérin Lajoie, T. Hermann, F. Joliet, A. Lamalice, E. Le Merre, E. Levesque, J.L. Martin, A. Ravel, Y. Wittrant. Improving the well-being of Inuit communities in Nunavik through a multi-thematic and cross-cultural research program studying the cumulative effects of climate and socio-economic changes. Ecoscience, 25 (4), 311-324, 2018 ; https://doi.org/10.1080/11956860.2018.1542783

 

2017

Bernier M., Dedieu J.P., Dugay Y., Seguin G. Snow Water Equivalent Estimation using High Resolution SAR data. IEEE Trans. Geosci. Rem. Sens., Igarss, TU1-L9-1, 1351-1354, 2017 ; https://doi.org/10.1109/IGARSS.2017.8127212.

 

Rabatel A., Sirguey P., Drolon V., Maisongrande P., Arnaud Y., Berthier E., Dazave L., Dedieu J.P., Dumont M. Annual and seasonal glacier wide surface mass balance quantified from changes in glacier surface state : a review on existing methods using optical satellite imagery. Remote Sensing, 9 (5), 507-529, 2017 ; https://doi.org/10.3390/rs905050

 

Dedieu J.P., Carlson B. Z., Bigot S., Sirguey P., Vionnet V. and Choler P. On the importance of high resolution time series imagery for quantifying the effects of snow cover duration on alpine plant habitat : the SPOT (Take5) experience for Sentinel-2 application. Remote Sensing, 8 (6), 481, 2016 ; https://doi.org/10.3390/rs8060481

.

Rabatel A., Dedieu J.P. and Vincent C. Spatio-temporal changes in glacier-wide mass balance quantified by optical remote-sensing on 30 glaciers in the French Alps for the period 1983-2014. Journal of Glaciology, 62 (236),1153-1166, 2016 ; https://doi.org/10.1017/jog.2016.113

 

2015

Randin C., Dedieu J.P., Zappa M., Long Li and Dullinger S. Validation and comparison between a semi-distributed rainfall-runoff hydrological model (PREVAH) and a spatially-distributed snow-evolution model (SnowModel) for snow cover prediction in mountain ecosystems. Ecohydrology Journal, 8 (7), 1181-1193 2015 ; https://doi.org/10.1002/eco.1570

.

Besic N., Vasile G., Dedieu J.P., Chanussot J. and Stankovic S. Stochastic approach in wet snow detection using multitemporal SAR data. IEEE Geoscience and Remote Sensing Letters, 12 (2), 244-248, 2015 ; https://doi.org/10.1109/LGRS.2014.2334355

 

Carlson BZ, Choler P., Renaud J., Dedieu J.P. and Thuiller W. Modelling snow cover duration improves predictions of functional and taxonomic diversity for alpine plant communities. Annals of Botany, 116 (6), 1023-1034, 2015 ; https://doi.org/10.1093/aob/mcv041

 

2014

Dedieu J.P., Lessard-Fontaine A., Ravazzani G., Cremonese E., Shalpykova G. and Beniston M. Shifting mountain snow patterns in a changing climate from remote sensing retrieval. Science of the Total Environment Journal, 493, 1267-1279, 2014 ; https://doi.org/10.1016/j.scitotenv.2014.04.078

.

Dedieu J.P., Besic N., Vasile G., Mathieu J., Durand Y. and Gottardi F. Dry snow analysis in alpine regions using Radarsat-2 full polarimetric data, comparison with in-situ measurements. IEEE Transaction on Geoscience and Remote Sensing, Igarss 2014, vol 5, 3658- 3661, 2014 ; https://doi.org/10.1109/IGARSS.2014.6947276

 

Gardent M., Rabatel A., Dedieu J.P., Deline P. Multitemporal glaciers inventory in the French Alps from the 1960s to the 2000s. A new insight into glaciers shrinkage over the last 40 years. Global and Planetary Change, 120, 24-37, 2014 ; https://doi.org/10.1016/j.gloplacha.2014.05.004