Jean-Pierre DEDIEU

photo CV Dedieu

Senior Research Scientist

University of Grenoble-Alpes (UGA), Grenoble, France.

  • UMR CNRS 5001 / UR 252

    Team “Cryosphere and Mountain Hydrology” (CYME)

    Reseach interests

    Cryosphere, Remote Sensing of snow and ice in mountainous and Arctic environments: European Alps, Central Asia, Himalayas, Northern Canada.

    Optical and active radar (SAR) sensors application for snow cover monitoring (climate, hydrology, ecology) and glaciers survey (mass balance, inventory).

    Education & professional experience

  • Engineer ESCG-Paris (1978), PhD (1983)
  • Research Scientist at CNRS (Grenoble) since 1986
  • Associated Professor at INRS-Québec (Canada)
  • Deputy-Director of the OHMI-Nunavik (Labex DRIIHM-CNRS/INEE)

  • Review activities for: IEEE-JSTARS, The Cryosphere, Remote Sensing, Journal of Glaciology, Science of the Total Environment, Geografiska Annaler.

    International research Activity

    EU framework projects:

  • FP6 “Glochamore” (Global Change in Mountain Regions, an Integrated Assessment of Causes and Consequences). 2003-2006.
  • FP7 “ACQWA” (Assessing Climatic Change and Impacts on the Quantity and Quality of Water). 2008-2014.

  • ANR projects

    (French National Reseach Agency): France + Nepal
  • ANR-CEP “Paprika”: (Cryosphere response to anthropologic pressure in Himalayas). 2009-2013.
  • ANR-SOCENV “Preshine” (Pressures on water and soils resource in Nepal Himalaya). 2014-2018.

  • Space Agencies Programs:

    France + Canada

    “Snow physical properties retrieval from Radarsat-2 C-band polarimetric data”
  • French Space Agency (CNES)+ INSU: “PNTS” Projects: 2003, 2009, 2013.
  • Canadian Space Agency (CSA) “SOAR” Projects: 2009, 2014.

  • “Snow optical properties retrieval from Copernicus Sentinel-2 data”
    French Space Agency (CNES) and European Space Agency (ESA)
  • Spot “Take 5” Experiments: 2013, 2015 (Alps)
  • Sentinel-N2A/THEIA Project: 2016-2018 (Québec, Canada)

  • “Glaciers and snow properties retrieval from Venµs data”
    French Space Agency (CNES) : "Pointing" project, 2017-2019
  • Application sites : Nepal, New Zealand, Antarctica

  • Climate Program

    « PrecipA2 » project

    LabEx OSUG@2020, Observatoire des sciences de l'Univers, Grenoble.

  • Application site : Ny Alesund, Svalbard (Norway). 2017-2019

  • International Research Observatory on Men-Media Interaction

    OHM-I « Nunavik » (France-Canada).

    LabEx DRIIHM-CNRS/INEE. 2014-2019
    Deputy-Director and member of the Steering Committee

  • "Aquabio" project, George river basin, Nunavik (Quebec).

  • The OHM-I Nunavik was created under the joint supervision of the Institute of Ecology and Environment CNRS (INEE, France) and the Centre for Northern Studies (CEN, Quebec).
    It is conducted in partnership with the Kativik Regional Government (KRG, Canada).

    International Journals (peer-reviewed)


    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. Snow Water Equivalent Estimation using High Resolution SAR data. Remote Sensing, 10(4), 619; doi: 10.3390/rs10040619, 2018.

    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); doi: 10.1080/11956860.2018.1498226, 2018.

    M. 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. Accepted, 2018.


    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; doi: 10.1109/IGARSS.2017.8127212. 2017.

    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; doi:10.3390/rs9050507, 2017.

    Rabatel A., Berthier E., Arnaud Y., Dedieu J.P., Dumont M., Gascoin S., Gay M., Guerreiro K., Karbou F., Kouraev A., Picard G., Rémy F., Sirguey P., Trouvé E., Zakharova E. Télédétection satellitaire des surfaces enneigées et englacées. La Météorologie, Société Météorologique de France, 97, 78-85, doi: 10.4267/2042/62170, 2017.


    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; doi:10.3390/rs8060481, 2016.

    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; doi: 10.1017/jog.2016.113, 2016.


    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; doi: 10.1002/eco.1570, 2015.

    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; doi 10.1109/LGRS.2014.2334355, 2015.

    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; doi 10.1093/aob/mcv041, 2015.


    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; doi 10.1016/j.scitotenv.2014.04.078, 2014.

    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; doi 10.1109/IGARSS.2014.6947276, 2014.

    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; doi: 10.1016/j.gloplacha.2014.05.004, 2014.


    Rabatel, A., Letréguilly, A., Dedieu J.P., and Eckert, N.: Changes in glacier equilibrium-line altitude in the western Alps from 1984 to 2010: evaluation by remote sensing and modeling of the morpho-topographic and climate controls, The Cryosphere, 7, 1455-1471; doi:10.5194/tc-7-1455-2013, 2013.


    Dedieu J.P., Beninca de Farias G., Castaings T., Allain-Bailhache S., Pottier E., Durand Y. and Bernier M. Interpretation of a RADARSAT-2 Fully Polarimetric Time Series for Snow Cover Studies in an Alpine Context. 2011. Canadian Journal of Remote Sensing. Taylor &Francis. 38(3), 336-351; doi: 10.5589/m12-027, 2012.

    B. Hingray, Dedieu J.P., Lebel T., Obled C., Sicart J.E., Six D., Vincent C., Wagnon P. and Zin I. Glaciological and hydrometeorological observations in mountainous areas: Some current issues and perspectives. La Houille Blanche, 12 (2); 5-11; doi: 10.1051/lhb/2012009, 2012.

    A. Mary, Dedieu J.P., Dumont M., Durand Y., Sirguey P., Kokhanovsky A.A., Negi H.S. and Mestre O. Snow Specific Surface Area retrieval from MODIS data in mountainous regions. The Cryosphere .(6); 1915-1961; doi:10.5194/tcd-6-1915-2012, 2012.

    Before 2010

    Bigot S., Rome S. and Dedieu J.P. Inter-annual variability of snowfall in the French Pre-Alps (Massif of Vercors); research of climatic predictors at synoptic scale. Geographia Technica, 7 (2); 73-78. 2009.

    Rabatel A., Dedieu J.P., Thibert E., Letréguilly A. and Vincent C. 25 years (1981-2005) of equilibrium-line altitude and mass-balance reconstruction on the Glacier Blanc, French Alps, using remote-sensing methods and meteorological data. Journal of Glaciology, 54 (185) ; 307-314. 2008.

    Bugmann, H., Björnsen-Gurung, A., Dedieu J.P., Ewert, F., Haeberli, W., Guisan, A., Fagre, D., Kääb, A., et al. Modelling the Biophysical Impacts of Global Change in Mountain Biosphere Reserves. Mountain Research and Development, 27(1) ; 66-77. 2007.

    Martini A., Ferro-Famil L., Pottier E. and Dedieu J.P. Dry snow discrimination in alpine areas from multi-frequency and multi-temporal SAR data. IEE Radar, Sonar and Navigation, 153 (3) ; 271-278. 2006.

    Martini A., Dedieu J.P., Ferro-Famil L and Pottier E. Dry Snow discrimination in a high mountainous environment (French Alps) using multi-frequency and multi-temporal polarimetric SAR data. Télédétection, 6 (1) : 45-55. 2006.

    Corbane C., Somma J., Bernier M., Dedieu J.P., Gauthier Y. et Fortin JP. Estimation of water equivalent of the snow cover in Lebanese mountains by means of RADARSAT-1 images, Hydrological Science Journal, (IAHS), 50 (2) ; 355-370. 2005.

    Rabatel A., Dedieu J.P. and Vincent C. Using remote-sensing data to determine equilibrium-line altitude and mass-balance time series: validation on three French glaciers, 1994–2002. Journal of Glaciology, 51 (175); 539-546. 2005.

    Gerbaux M.; Genthon C.; Etchevers P.; Vincent C. and Dedieu J.P. Surface mass balance of glaciers in the French Alps: distributed modeling and sensitivity to climate change, Journal of Glaciology, 51 (175); 561-572. 2005.

    Grabherr G, Björnsen A., Dedieu J.P., Haeberli H., Guisan A., Hohenwallner D., Lotter A., Nagy L., Pauli H. and Psenner R., et al.. Long term environmental observations in mountain biosphere reserves ; recommendations from the EU project Glochamore. Mountain Research and Development, 25 (4); 376-382. 2005.

    Dedieu J.P. 2002 : Review of SAR capabilities and limitation in snow and ice survey for hydrologic application, La Houille Blanche, Société Hydrotechnique de France, 02 (1) ; 55-56. 2002.

    Fily M., Dedieu J.P., Y. Durand and C. Sergent. Remote sensing of snow in the solar spectrum, experiments in the french Alps, Defence Science Journal, 50 (2), 217-229. 2000.

    Fily M., Dedieu J.P. and Durand Y. Comparison between the results of a Snow Metamorphism Model and Remote Sensing derived Snow Parameters in the Alps, Remote Sensing of Environment, 68 ; 254-263. 1999.

    Fily M., Bourdelles B., Dedieu J.P. and Sergent C. Comparison of in situ and Landsat Thematic Mapper derived Snow Grain Characteristics in the Alps , Remote Sensing of Environment, 59 ; 452-460. 1998.

    International Conferences with proceedings (since 2010)


    Dedieu J.P., Monfette M., Fransen J., El Alem A., Rowell J.A., MacMillan G.A., Snowball H., Gérin-Lajoie G. Advancing methods for water quality studies of Arctic rivers with Remote Sensing and ground-based measurements; case study of the George River basin (Nunavik, Canada). European Geophysical Union, Vol 20, 12243. EGU 08-13 April 2018.

    Bouchard B., Dedieu J.P., Delclaux F., Eeckman J., Arnaud Y., Chevallier P. Application of MODIS and adjusted Spot VGT datasaet (1998-2017) on Nepalese river basin: on the interest to use seasonal adaptive thresholds for constraining snow melt simulation and enhance hydrological modelling results. European Geophysical Union, Vol 20, 12893. EGU 08-13 April 2018.

    Dedieu J.P., Negrello C., Jacobi H.W., Duguay Y., Boike J., Bernard E., Westermann S., Gallet J.C., Wendleder A. Improvement of snow physical parameters retrieval using SAR data in the Arctic (Svalbard). International Snow Science Workshop, ISSW, 07-12 Oct 2018.

    Dedieu J.P., Negrello C., Jacobi H.W., Duguay Y., Boike J., Bernard E., Westermann S., Gallet J.C., Balidima F., Wendleder A. Snow physical parameters retrieval using SAR data in the Arctic (Svalbard). Ny-Ålesund Atmosphere Flagship workshop, 15-19 Oct 2018. AWI Potsdam, Germany.


    Dedieu J.P., Monfette M., Fransen J., Herrmann T.M., Rowell J.A., Gerin-Lajoie J. Advances in remote sensing of inland water quality and vegetation dynamics by means of Sentinel-2A and Landsat-8 data. Application in an Arctic river basin (Nunavik, Canada). EOSummit Conference, Montreal (Canada), 19-23 June 2017.

    Dedieu J.P., Ratte-Fortin C., Chokmani K., Roberge S., Bernier M. Advances in PolSAR remote sensing of seasonal snow at C-band. Application in alpine environment by means of Radarsat-2 data. EOSummit Conference, Montreal (Canada), 19-23 June 2017.

    Masson T., Dalla-Mura M., Dumont M., Siguey P., Gascoin S., Chanussot J., Dedieu J.P. Accuracy assessment of Modis snow cover products. 8th EARSeL workshop on Land Ice and Snow, Bern (Switzerland), 07-09 Feb 2017.


    4th Workshop on Remote Sensing and Modeling of Surfaces Properties (RSMSP/CIMSS), 14-16 mars 2016, Grenoble (France).

    Dedieu J.P., Besic N., Vazile G., Roberge S., Bernier M., Durand Y., Morin S., Gottardi F. and Le Lay M. “Snow properties retrieval by full polarimetric decomposition in C-band SAR data”.


    Our Common Future under Climate Change (CFCC)/COP21, 06-10 Juillet 2015, Paris (France) :
    Dedieu J.P., I. Zin, T. Condom, J.E. Sicard, Y. Arnaud, A. Rabatel, D. Six, C. Obled. “Challenges and needs for interdisciplinary studies on mountain water resources: current issues and perspectives”. Session 2211 (Climate change in mountains, from impacts to resilience).


    Dedieu J.P., Randin C., Zappa M. and Dullinger S. Modelling the effect of changing snow cover regimes on alpine plant species distribution in Alpine context. ISSW’13 International Snow Science Conference, Grenoble (FR). A7366JD, 1298-1303.

    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. IGARSS 2014, Québec (CAN).

    Dedieu J.P., Letréguilly A., Rabatel A. and Nobile S. Glacier mass balance distributions in the French Alps from 1996 to 2010 based on a regionalisation of ground measurements. EARSeL 2014. Bern (CH).


    Besic N., Vasile G., Chanussot J., Stankovic S., Boldo D., Dedieu J.P. and d’Urso G.Wet snow backscattering sensitivity on density change for SWE estimation, IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013. Melbourne, Australia, 21-26 July, 2013.


    A. Lessard-Fontaine, Allain-Bailhache S., Dedieu J.P., Durand Y. Multi-temporal dry and wet snow mapping in alpine context using polarimetric RADARSAT-2 time-series. IEEE Transactions on Geoscience and Remote Sensing, IGARSS (12); 1569-1571. 2012. Doi 978-1-4673-1159-5/12.

    N. Besic, Vasile G., Chanussot J., Stankovic S., Dedieu J.P., d’Urso G., Boldo D., Ovarlez JP. Dry snow backscattering sensivity on density change for SWE estimation. IEEE Transactions on Geoscience and Remote Sensing, IGARSS (12); 4418-4421. 2012. Doi 978-1-4673-1159-5/12.

    N. Besic, Vasile G., Chanussot J., Stankovic S., Ovarlez JP., d’Urso G., Boldo D., Dedieu J.P. Stochastically based wet snow mapping with SAR data. IEEE Transactions on Geoscience and Remote Sensing, IGARSS (12); 4859-4862. 2012. Doi 978-1-4673-1159-5/12.


    Bernier M., Dedieu J.P., Dugay, Y. « Land Surface Remote Sensing », vol 4 "Continental Hydrology", chap. 5 “Snow Characterization using Radar Imaging ”. pp. 139-176. Elsevier/ISTE Publishing, London, UK. 502p. 2016. ISBN: 9780081011812.


    University of Grenoble Alpes: Institute of Geography (IGA):
    Bachelor and Master courses on remote sensing vs mountain (topography, environment).

    Master & diploma thesis

    One to two Masters and Engineers trainee sessions per year:

  • Ecole Supérieure des Géomètres Topographes (ESGT), Le Mans –France
  • Institut National des Sciences Appliquées (INSA), Strasbourg – France
  • Ecole Nationale de la Météorologie (ENM), Toulouse – France
  • Institut National de la Recherche Scientifique (INRS-ETE), Québec – Canada
  • Université LAVAL, Université de Montréal, Université de Trois-Rivières (Québec, Canada)

  • PhD Committees at the University of Grenoble Alpes and INRS-ETE (Canada).