Laurent ARNAUD

51 ans.

Ingénieur de recherche IR1-CNRS au sein de l’équipe C2H.


Membre du comité de pilotage pour la mise en place d’un réseau professionnel CNRS autour des drones et de l’instrumentation embarquée.

Membre de la commission observatoire de l’OSUG.

Responsable du volet neige polaire du SOERE-CRYOBSCLIM et membre de l’infrastructure de recherche OZCAR.

Thématiques de recherche: caractérisation de la neige et du névé polaire

Curriculum Vitae :


Experience professionnelle :

Exemples de réalisations techniques :

Instruments pour des mesures manuelles et stations automatiques/autonomes pour des mesures temporelles continues dans des régions à très fortes contraintes climatiques.

Publications scientifiques (revues avec comité de lecture – 10 dernières années) :

2021 ------------------------------------------------------------------------------------------------------------------------------------------

[83] Olmi, R., Bittelli, M., Picard, G., Arnaud, L., Mialon, A., and Priori, S.: Investigating the influence of the grain size and distribution on the macroscopic dielectric properties of Antarctic firn, Cold Regions Science and Technology, 185, 103254,, 2021.

[82] Vincent, C., Cusicanqui, D., Jourdain, B., Laarman, O., Six, D., Gilbert, A., Walpersdorf, A., Rabatel, A., Piard, L., Gimbert, F., Gagliardini, O., Peyaud, V., Arnaud, L., Thibert, E., Brun, F., and Nanni, U.: Geodetic point surface mass balances: a new approach to determine point surface mass balances on glaciers from remote sensing measurements, The Cryosphere, 15, 1259–1276,, 2021.

2020 ------------------------------------------------------------------------------------------------------------------------------------------

[81] Belke-Brea, M., Domine, F., Boudreau, S., Picard, G., Barrere, M., Arnaud, L., and Paradis, M.: New Allometric Equations for Arctic Shrubs and Their Application for Calculating the Albedo of Surfaces with Snow and Protruding Branches, 21, 2581–2594,, 2020.

[80] Tuzet, F., Dumont, M., Picard, G., Lamare, M., Voisin, D., Nabat, P., Lafaysse, M., Larue, F., Revuelto, J., and Arnaud, L.: Quantification of the radiative impact of light-absorbing particles during two contrasted snow seasons at Col du Lautaret (2058 m a.s.l., French Alps), The Cryosphere, 14, 4553–4579,, 2020.

[79] Lamare, M., Dumont, M., Picard, G., Larue, F., Tuzet, F., Delcourt, C., and Arnaud, L.: Simulating optical top-of-atmosphere radiance satellite images over snow-covered rugged terrain, The Cryosphere, 14, 3995–4020,, 2020.

[78] Fourteau, K., Arnaud, L., Faïn, X., Martinerie, P., Etheridge, D. M., Lipenkov, V. and Barnola, J.-M.: Historical porosity data in polar firn, Earth System Science Data, 12(2), 1171–1177, doi:, 2020.

[77] Belke-Brea, M., Domine, F., Barrere, M., Picard, G. and Arnaud, L.: Impact of Shrubs on Winter Surface Albedo and Snow Specific Surface Area at a Low Arctic Site: In Situ Measurements and Simulations, J. Climate, 33(2), 597–609, doi:10.1175/JCLI-D-19-0318.1, 2020.

[76] Picard, G., Dumont, M., Lamare, M., Tuzet, F., Larue, F., Pirazzini, R. and Arnaud, L.: Spectral albedo measurements over snow-covered slopes: theory and slope effect corrections, The Cryosphere, 14(5), 1497–1517, doi:, 2020.

[75] Massicotte, et al.: Green Edge ice camp campaigns: understanding the processes controlling the under-ice Arctic phytoplankton spring bloom, Earth System Science Data, 12(1), 151–176, doi:, 2020.

[74] Cluzet, B., Revuelto, J., Lafaysse, M., Tuzet, F., Cosme, E., Picard, G., Arnaud, L. and Dumont, M.: Towards the assimilation of satellite reflectance into semi-distributed ensemble snowpack simulations, Cold Regions Science and Technology, 170, 102918, doi:10.1016/j.coldregions.2019.102918, 2020.

[73] Larue, F., Picard, G., Arnaud, L., Ollivier, I., Delcourt, C., Lamare, M., Tuzet, F., Revuelto, J. and Dumont, M.: Snow albedo sensitivity to macroscopic surface roughness using a new ray-tracing model, The Cryosphere, 14(5), 1651–1672, doi:, 2020.

2019 ------------------------------------------------------------------------------------------------------------------------------------------

[72] Fourteau, K., Martinerie, P., Faïn, X., Schaller, C. F., Tuckwell, R. J., Löwe, H., Arnaud, L., Magand, O., Thomas, E. R., Freitag, J., Mulvaney, R., Schneebeli, M. and Lipenkov, V. Ya.: Multi-tracer study of gas trapping in an East Antarctic ice core, The Cryosphere, 13(12), 3383–3403, doi:10.5194/tc-13-3383-2019, 2019.

[71] Picard, G., Arnaud, L., Caneill, R., Lefebvre, E. and Lamare, M.: Observation of the process of snow accumulation on the Antarctic Plateau by time lapse laser scanning, The Cryosphere, 13(7), 1983–1999, doi:, 2019.

[70] Shibayev, Yu. A., Tchikhatchev, K. B., Lipenkov, V. Ya., Ekaykin, A. A., Lefebvre, E., Arnaud, L. and Petit, J.-R.: Seasonal variations of snowpack temperature and thermal conductivity of snow in the vicinity of Vostok station, Antarctica, Problemy Arktiki i Antarktiki, 65(2), 169–185, doi:10.30758/0555-2648-2019-65-2-169-185, 2019.

[69] Tuzet, F., Dumont, M., Arnaud, L., Voisin, D., Lamare, M., Larue, F., Revuelto, J. and Picard, G.: Influence of light-absorbing particles on snow spectral irradiance profiles, The Cryosphere, 13(8), 2169–2187, doi:, 2019.

[68] Champollion, N., Picard, G., Arnaud, L., Lefebvre, É., Macelloni, G., Rémy, F. and Fily, M.: Marked decrease in the near-surface snow density retrieved by AMSR-E satellite at Dome C, Antarctica, between 2002 and 2011, The Cryosphere, 13(4), 1215–1232, doi:, 2019.

[67] Kokhanovsky, A., Lamare, M., Danne, O., Brockmann, C., Dumont, M., Picard, G., Arnaud, L., Favier, V., Jourdain, B., Le Meur, E., Di Mauro, B., Aoki, T., Niwano, M., Rozanov, V., Korkin, S., Kipfstuhl, S., Freitag, J., Hoerhold, M., Zuhr, A., Vladimirova, D., Faber, A.-K., Steen-Larsen, H., Wahl, S., Andersen, J., Vandecrux, B., van As, D., Mankoff, K., Kern, M., Zege, E. and Box, J.: Retrieval of Snow Properties from the Sentinel-3 Ocean and Land Colour Instrument, Remote Sensing, 11(19), 2280, doi:10.3390/rs11192280, 2019.

2018 ------------------------------------------------------------------------------------------------------------------------------------------

[66] Touzeau, A., Landais, A., Morin, S., Arnaud, L. and Picard, G.: Numerical experiments on vapor diffusion in polar snow and firn and its impact on isotopes using the multi-layer energy balance model Crocus in SURFEX v8.0, Geoscientific Model Development, 11(6), 2393–2418, doi:, 2018.

[65] Domine, F., Belke-Brea, M., Sarrazin, D., Arnaud, L., Barrere, M. and Poirier, M.: Soil moisture, wind speed and depth hoar formation in the Arctic snowpack, Journal of Glaciology, 64(248), 990–1002, doi:10.1017/jog.2018.89, 2018.

[64] Vincent, C., Dumont, M., Six, D., Brun, F., Picard, G. and Arnaud, L.: Why do the dark and light ogives of Forbes bands have similar surface mass balances?, Journal of Glaciology, 64(244), 236–246, doi:10.1017/jog.2018.12, 2018.

[63] Casado, M., Landais, A., Picard, G., Münch, T., Laepple, T., Stenni, B., Dreossi, G., Ekaykin, A., Arnaud, L., Genthon, C., Touzeau, A., Masson-Delmotte, V. and Jouzel, J.: Archival processes of the water stable isotope signal in East Antarctic ice cores, The Cryosphere, 12(5), 1745–1766, doi:10.5194/tc-12-1745-2018, 2018.

[62] Le Meur, E., Magand, O., Arnaud, L., Fily, M., Frezzotti, M., Cavitte, M., Mulvaney, R. and Urbini, S.: Spatial and temporal distributions of surface mass balance between Concordia and Vostok stations, Antarctica, from combined radar and ice core data: first results and detailed error analysis, The Cryosphere, 12(5), 1831–1850, doi:10.5194/tc-12-1831-2018, 2018.

[61] Kokhanovsky, A., Lamare, M., Mauro, B. D., Picard, G., Arnaud, L., Dumont, M., Tuzet, F., Brockmann, C. and Box, J. E.: On the reflectance spectroscopy of snow, The Cryosphere, 12(7), 2371–2382, doi:, 2018.

2017 ------------------------------------------------------------------------------------------------------------------------------------------

[60] Bréant, C., Martinerie, P., Orsi, A., Arnaud, L. and Landais, A.: Modelling firn thickness evolution during the last deglaciation: constraints on sensitivity to temperature and impurities, Climate of the Past, 13(7), 833–853, doi:10.5194/cp-13-833-2017, 2017.

[59] Tuzet, F., Dumont, M., Lafaysse, M., Picard, G., Arnaud, L., Voisin, D., Lejeune, Y., Charrois, L., Nabat, P. and Morin, S.: A multilayer physically based snowpack model simulating direct and indirect radiative impacts of light-absorbing impurities in snow, The Cryosphere, 11(6), 2633–2653, doi:10.5194/tc-11-2633-2017, 2017.

[58] Leduc-Leballeur, M., Picard, G., Macelloni, G., Arnaud, L., Brogioni, M., Mialon, A. and Kerr, Y. H.: Influence of snow surface properties on L-band brightness temperature at Dome C, Antarctica, Remote Sensing of Environment, 199, 427–436, doi:10.1016/j.rse.2017.07.035, 2017.

[57] Dumont, M., Arnaud, L., Picard, G., Libois, Q., Lejeune, Y., Nabat, P., Voisin, D. and Morin, S.: In situ continuous visible and near-infrared spectroscopy of an alpine snowpack, The Cryosphere, 11(3), 1091–1110, doi:10.5194/tc-11-1091-2017, 2017.

[56] Landais, A., Casado, M., Prié, F., Magand, O., Arnaud, L., Ekaykin, A., Petit, J.-R., Picard, G., Fily, M., Minster, B., Touzeau, A., Goursaud, S., Masson-Delmotte, V., Jouzel, J. and Orsi, A.: Surface studies of water isotopes in Antarctica for quantitative interpretation of deep ice core data, Comptes Rendus Geoscience, 349(4), 139–150, doi:10.1016/j.crte.2017.05.003, 2017.


2016 ------------------------------------------------------------------------------------------------------------------------------------------

[55] Casado, M., Landais, A., Masson-Delmotte, V., Genthon, C., Kerstel, E., Kassi, S., Arnaud, L., Picard, G., Prie, F., Cattani, O., Steen-Larsen, H.-C., Vignon, E. and Cermak, P.: Continuous measurements of isotopic composition of water vapour on the East Antarctic Plateau, Atmospheric Chemistry and Physics Discussions, 1–26, doi:10.5194/acp-2016-8, 2016.

[54] Picard, G., Arnaud, L., Panel, J.-M. and Morin, S.: Design of a scanning laser meter for monitoring the spatio-temporal evolution of snow depth and its application in the Alps and in Antarctica, The Cryosphere, 10(4), 1495–1511, doi:10.5194/tc-10-1495-2016, 2016a.

[53] Picard, G., Libois, Q., Arnaud, L., Verin, G. and Dumont, M.: Development and calibration of an automatic spectral albedometer to estimate near-surface snow SSA time series, The Cryosphere, 10(3), 1297–1316, doi:10.5194/tc-10-1297-2016, 2016b.

[52] Picard, G., Libois, Q. and Arnaud, L.: Refinement of the ice absorption spectrum in the visible using radiance profile measurements in Antarctic snow, The Cryosphere Discussions, 1–36, doi:10.5194/tc-2016-146, 2016c.

[51] Weiss, J., Pellissier, V., Marsan, D., Arnaud, L. and Renard, F.: Cohesion versus friction in controlling the long-term strength of a self-healing experimental fault: COHESION VERSUS FRICTION, Journal of Geophysical Research: Solid Earth, 121(12), 8523–8547, doi:10.1002/2016JB013110, 2016.

2015 ------------------------------------------------------------------------------------------------------------------------------------------

[50] Q. Libois, G. Picard, L. Arnaud, M. Dumont, M. Lafaysse, S. Morin, and E. Lefebvre, ‘Summertime evolution of snow specific surface area close to the surface on the Antarctic Plateau’, The Cryosphere, vol. 9, no. 6, pp. 2383–2398, Dec. 2015. doi:10.5194/tc-9-2383-2015

[49] F. Domine, M. Barrere, D. Sarrazin, S. Morin, and L. Arnaud, ‘Automatic monitoring of the effective thermal conductivity of snow in a low-Arctic shrub tundra’, The Cryosphere, vol. 9, no. 3, pp. 1265–1276, Jun. 2015. doi:10.5194/tc-9-1265-2015

[48] M. Leduc-Leballeur, G. Picard, A. Mialon, L. Arnaud, E. Lefebvre, P. Possenti, and Y. Kerr, ‘Modeling L-Band Brightness Temperature at Dome C in Antarctica and Comparison With SMOS Observations’, IEEE Transactions on Geoscience and Remote Sensing, pp. 1–11, 2015. doi:10.1109/TGRS.2015.2388790

2014 ------------------------------------------------------------------------------------------------------------------------------------------

[47] Libois, Q., Picard, G., Arnaud, L., Morin, S. and Brun, E.: Modeling the impact of snow drift on the decameter-scale variability of snow properties on the Antarctic Plateau, Journal of Geophysical Research: Atmospheres, 119(20), 11,662-11,681, doi:10.1002/2014JD022361, 2014.

[46]Carmagnola, C. M., Morin, S., Lafaysse, M., Domine, F., Lesaffre, B., Lejeune, Y., Picard, G. and Arnaud, L.: Implementation and evaluation of prognostic representations of the optical diameter of snow in the SURFEX/ISBA-Crocus detailed snowpack model, The Cryosphere, 8(2), 417–437, doi:10.5194/tc-8-417-2014, 2014.

[45]Fréville, H., Brun, E., Picard, G., Tatarinova, N., Arnaud, L., Lanconelli, C., Reijmer, C. and van den Broeke, M.: Using MODIS land surface temperatures and the Crocus snow model to understand the warm bias of ERA-Interim reanalyses at the surface in Antarctica, The Cryosphere, 8(4), 1361–1373, doi:10.5194/tc-8-1361-2014, 2014.

[44]Libois, Q., Picard, G., Dumont, M., Arnaud, L., Sergent, C., Pougatch, E., Sudul, M. and Vial, D.: Experimental determination of the absorption enhancement parameter of snow, Journal of Glaciology, 60(222), 714–724, doi:10.3189/2014JoG14J015, 2014.

[43] Picard, G., Royer, A., Arnaud, L. and Fily, M.: Influence of meter-scale wind-formed features on the variability of the microwave brightness temperature around Dome C in Antarctica, The Cryosphere, 8(3), 1105–1119, doi:10.5194/tc-8-1105-2014, 2014.

2013 ------------------------------------------------------------------------------------------------------------------------------------------

[42] Carmagnola, C. M., Domine, F., Dumont, M., Wright, P., Strellis, B., Bergin, M., Dibb, J., Picard, G., Libois, Q., Arnaud, L. and Morin, S.: Snow spectral albedo at Summit, Greenland: measurements and numerical simulations based on physical and chemical properties of the snowpack, The Cryosphere, 7(4), 1139–1160, doi:10.5194/tc-7-1139-2013, 2013.

[41] Champollion, N., Picard, G., Arnaud, L., Lefebvre, E. and Fily, M.: Hoar crystal development and disappearance at Dome C, Antarctica: observation by near-infrared photography and passive microwave satellite, The Cryosphere, 7(4), 1247–1262, doi:10.5194/tc-7-1247-2013, 2013.

[40] Libois, Q., Picard, G., France, J. L., Arnaud, L., Dumont, M., Carmagnola, C. M. and King, M. D.: Influence of grain shape on light penetration in snow, The Cryosphere, 7(6), 1803–1818, doi:10.5194/tc-7-1803-2013, 2013.

2012 ------------------------------------------------------------------------------------------------------------------------------------------

[39] Lefebvre, E., Arnaud, L., Ekakkyn, AA, Lipenkov,V, V. Y., Picard, G. and Petit, J. R.: Snow temperature measurements at Vostok station from an autonomous recording system (TAUTO): preliminary results from the first year operation, , 120(4), 2012.

[38] Montagnat, M., Buiron, D., Arnaud, L., Broquet, A., Schlitz, P., Jacob, R. and Kipfstuhl, S.: Measurements and numerical simulation of fabric evolution along the Talos Dome ice core, Antarctica, Earth and Planetary Science Letters, 357–358, 168–178, doi:10.1016/j.epsl.2012.09.025, 2012.

[37] Picard, G., Domine, F., Krinner, G., Arnaud, L. and Lefebvre, E.: Inhibition of the positive snow-albedo feedback by precipitation in interior Antarctica, Nature Climate Change, 2(11), 795–798, doi:10.1038/nclimate1590, 2012.

[36] Verfaillie, D., Fily, M., Le Meur, E., Magand, O., Jourdain, B., Arnaud, L. and Favier, V.: Snow accumulation variability derived from radar and firn core data along a 600 km transect in Adelie Land, East Antarctic plateau, The Cryosphere, 6(6), 1345–1358, doi:10.5194/tc-6-1345-2012, 2012.

[35] Landais, A., Dreyfus, G., Capron, E., Pol, K., Loutre, M. F., Raynaud, D., Lipenkov, V. Y., Arnaud, L., Masson-Delmotte, V., Paillard, D., Jouzel, J. and Leuenberger, M.: Towards orbital dating of the EPICA Dome C ice core using δO2/N2, Climate of the Past, 8(1), 191–203, doi:10.5194/cp-8-191-2012, 2012.

2011 ------------------------------------------------------------------------------------------------------------------------------------------

[34] Arnaud, L., Picard, G., Champollion, N., Domine, F., Gallet, J. C., Lefebvre, E., Fily, M. and Barnola, J. M.: Measurement of vertical profiles of snow specific surface area with a 1 cm resolution using infrared reflectance: instrument description and validation, Journal of Glaciology, 57(201), 17–29 [online] Available from: (Accessed 19 August 2013), 2011.

[33] Brucker, L., Picard, G., Arnaud, L., Barnola, J.-M., Schneebeli, M., Brunjail, H., Lefebvre, E. and Fily, M.: Modeling time series of microwave brightness temperature at Dome C, Antarctica, using vertically resolved snow temperature and microstructure measurements, Journal of Glaciology, 57(201), 171–182 [online] Available from: (Accessed 11 September 2013), 2011.

[32] Brun, E., Six, D., Picard, G., Vionnet, V., Arnaud, L., Bazile, E., Boone, A., Bouchard, A., Genthon, C. and Guidard, V.: Snow/atmosphere coupled simulation at Dome C, Antarctica, Journal of Glaciology, 57(204), 721–736 [online] Available from: (Accessed 6 November 2013), 2011.

[31] Favier, V., Agosta, C., Genthon, C., Arnaud, L., Trouvillez, A. and Gallée, H.: Modeling the mass and surface heat budgets in a coastal blue ice area of Adelie Land, Antarctica, Journal of Geophysical Research, 116(F3), doi:10.1029/2010JF001939, 2011.

[30] Gallet, J.-C., Domine, F., Arnaud, L., Picard, G. and Savarino, J.: Vertical profile of the specific surface area and density of the snow at Dome C and on a transect to Dumont D’Urville, Antarctica – albedo calculations and comparison to remote sensing products, The Cryosphere, 5(3), 631–649, doi:10.5194/tc-5-631-2011, 2011.

[29] Montagnat, M., Blackford, J., Piazolo, S., Arnaud, L. and Lebensohn, R.: Measurements and full-field predictions of deformation heterogeneities in ice, , doi:10.1016/J.EPSL.2011.02.050, 2011.