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Viltard,Nicolas

Nicolas Viltard
Membre du département space

Bureau: Guy-B1227
Tél : 0180285233

Visitez sa page personnelle

Publications au LATMOS depuis sa création (2009)

Articles dans des revues avec comité de lecture


2023


ICE GENESIS: Synergetic Aircraft and Ground-Based Remote Sensing and In Situ Measurements of Snowfall Microphysical Properties
Billault-Roux A.-C., Grazioli J., Delanoë J., Jorquera S., Pauwels N., Viltard N., Martini A., Mariage V., Le Gac C., Caudoux C., Aubry C. et al.
Bulletin of the American Meteorological Society, 2023, 104 (2), pp.E367-E388. ⟨10.1175/BAMS-D-21-0184.1⟩ - insu-04012416

Evaluation Of Drain, A Deep-Learning Approach To Rain Retrieval From Gpm Passive Microwave Radiometer.
Viltard N., Sambath V., Lepetit P., Martini A., Barthès L., Mallet C.
IEEE Transactions on Geoscience and Remote Sensing, In press, ⟨10.1109/TGRS.2023.3293932⟩ - hal-04011552

Calibration transfer methodology for cloud radars based on ice cloud observations
Jorquera S., Toledo F., Delanoë J., Berne A., Billault-Roux A.-C., Schwarzenboeck A., Dezitter F., Viltard N., Martini A.
Journal of Atmospheric and Oceanic Technology, 2023, 40 (7), pp.773-788. ⟨10.1175/JTECH-D-22-0087.1⟩ - insu-04082890

Dual-frequency spectral radar retrieval of snowfall microphysics: a physics-driven deep-learning approach
Billault-Roux A.-C., Ghiggi G., Jaffeux L., Martini A., Viltard N., Berne A.
Atmospheric Measurement Techniques, 2023, 16 (4), pp.911-940. ⟨10.5194/amt-16-911-2023⟩ - insu-03741161

2022


Using Deep Learning for Restoration of Precipitation Echoes in Radar Data
Lepetit P., Ly C., Barthès L., Mallet C., Viltard N., Lemaître Y., Rottner L.
IEEE Transactions on Geoscience and Remote Sensing, 2022, 60, pp.5100914. ⟨10.1109/TGRS.2021.3052582⟩ - insu-03151106

Unsupervised domain adaptation for Global Precipitation Measurement satellite constellation using Cycle Generative Adversarial Nets
Sambath V., Viltard N., Barthès L., Martini A., Mallet C.
Environmental Data Science, 2022, 1, pp.e24. ⟨10.1017/eds.2022.16⟩ - insu-03892915

2018


Precipitation Estimates from SMOS Sea-Surface Salinity
Supply A., Boutin J., Vergely J.-L., Martin N., Hasson A., Reverdin G., Mallet C., Viltard N.
Quarterly Journal of the Royal Meteorological Society, 2018, 144 (S1), pp.103-119. ⟨10.1002/qj.3110⟩ - insu-01563248

2017


Evolution of the Distribution of Upper-Tropospheric Humidity over the Indian Ocean: Connection with Large-Scale Advection and Local Cloudiness
Garot T., Brogniez H., Fallourd R., Viltard N.
Journal of Applied Meteorology and Climatology, 2017, 56 (7), pp.2035-2052. ⟨10.1175/JAMC-D-16-0193.1⟩ - insu-01527806

2016


Aircraft Observations of Dry Air, ITCZ, Convective Cloud Systems and Cold Pools in MJO During DYNAMO
Chen S. S., Kerns B. W., Guy N., Jorgensen D. P., Delanoë J., Viltard N., Zappa C., Judt F., Lee C.-Y., Savarin A.
Bulletin of the American Meteorological Society, 2016, 97 (3), pp.405-423. ⟨10.1175/BAMS-D-13-00196.1⟩ - insu-01175728

2015


The Megha-Tropiques mission: a review after three years in orbit
Roca R., Brogniez H., Chambon P., Chomette O., Cloché S., Gosset M. E., Mahfouf J.-F., Raberanto P., Viltard N.
Frontiers in Earth Science, 2015, 3, pp.17. ⟨10.3389/feart.2015.00017⟩ - insu-01146561

Ice microphysics retrieval in the convective systems of the Indian Ocean during the CINDY–DYNAMO campaign
Martini A., Viltard N., Ellis S. M., Fontaine E.
Atmospheric Research, 2015, 163, pp.13-23. ⟨10.1016/j.atmosres.2014.12.013⟩ - hal-01121234

2014


Robust observational quantification of the contribution of mesoscale convective systems to rainfall in the tropics
Roca R., Aublanc J., Chambon P., Fiolleau T., Viltard N.
Journal of Climate, 2014, 27, pp.4952-4958. ⟨10.1175/JCLI-D-13-00628.1⟩ - hal-00976400

2013


An error model for instantaneous satellite rainfall estimates: evaluation of BRAIN-TMI over West Africa
Kirstetter P.-E., Viltard N., Gosset M.
Quarterly Journal of the Royal Meteorological Society, 2013, 139 (673), pp.894-911. ⟨10.1002/qj.1964⟩ - hal-00834180

A new methodology for rain identification from passive microwave data in the Tropics using neural networks
Kacimi S., Viltard N., Kirstetter P.-E.
Quarterly Journal of the Royal Meteorological Society, 2013, 139 (673), pp.912-922. ⟨10.1002/qj.2114⟩ - hal-00808161

An investigation of the error budget of tropical rainfall accumulation derived from merged passive microwave and infrared satellite measurements
Chambon P., Jobard I., Roca R., Viltard N.
Quarterly Journal of the Royal Meteorological Society, 2013, 139 (673), pp.879-893. ⟨10.1002/qj.1907⟩ - hal-00676835

2011


On the suitability of regional climate models for reconstructing climatologies
Tapiador F. J., Angelis C. F., Viltard N., Cuartero F., de Castro M.
Atmospheric Research, 2011, 101 (3), pp.739-751. ⟨10.1016/j.atmosres.2011.05.001⟩ - hal-00613890

2010


Coastal observations of weather features in Senegal during the African Monsoon Multidisciplinary Analysis Special Observing Period 3
Jenkins G., Kucera P., Joseph E., Fuentes J., Gaye A., Gerlach J., Roux F., Viltard N., Papazzoni M., Protat A., Bouniol D. et al.
Journal of Geophysical Research: Atmospheres, 2010, 115 (D18), pp.D18108. ⟨10.1029/2009JD013022⟩ - hal-00476466

Comparison of rainfall profiles in the West African monsoon as depicted by TRMM PR and LMDZ climate model
Diatta S., Hourdin F., Gaye A. T., Viltard N.
Monthly Weather Review, 2010, 138 (5746), pp.1767-1777. ⟨10.1175/2009MWR3092.1⟩ - hal-00436995

Polarimetric signatures and hydrometeor classification of West African squall lines
Evaristo R., Scialom G., Viltard N., Lemaître Y.
Quarterly Journal of the Royal Meteorological Society, 2010, 136 (S1), pp.272-288. ⟨10.1002/qj.561⟩ - hal-00450805

2009


RONSARD Radar: Implementation of Dual Polarization on a C-Band Doppler Weather Radar
Scialom G., Faroux J., Giraud M., Ney R., Evaristo R., Lemaître Y., Viltard N.
IEEE Geoscience and Remote Sensing Letters, 2009, 6 (1), pp.132-136. ⟨10.1109/LGRS.2008.2008318⟩ - hal-00352951

Communications avec actes


2020


RETRIEVING RAIN RATES FROM SPACE BORNE MICROWAVE SENSORS USING U-NETS
Viltard N., Lepetit P., Mallet C., Barthès L., Martini A.
Climate Informatics 2020. 10th International Conference, Sep 2020, Oxford, United Kingdom - insu-02894942

Learning to compare visibility on webcam images
Lepetit P., Mallet C., Barthès L., Viltard N.
Climate Informatics 2020. 10th International Conference on Climate Informatics, Sep 2020, Oxford, United Kingdom - hal-02926386

2019


Développements radar au LATMOS pour l'études des propriétés microphysiques des nuages et des précipitations
Viltard N., Le Gac C., Martini A., Lemaître Y., Pauwels N., Delanoë J., Lesage G.
ENVIREM 2019, Jul 2019, Palaiseau, France - hal-02389653

2013


Upper Tropospheric humidity from Megha-Tropiques : A humidity-convection study
Viltard N., Brogniez H., Martini A.
2013 EUMETSAT Meteorological Satellite Conference 19th American Meteorological Society (AMS) Satellite Meteorology, Oceanography, and Climatology Conference: Understanding the past, observing the present and protecting the future, Vienna 2013, Sep 2013, Vienna, Austria - hal-01006230

Algorithm Validation in the Megha-Tropiques Framework: An Attempt to Improve the Microphysic Parameterization in a Radiative Transfer Model
Martini A., Viltard N.
1st Megha Tropiques Ground Validation Workshop on Rainfall Products Validation and Hydrological Applications in the Tropics, Sep 2013, Toulouse, France - hal-00870667

2012


The Megha-Tropiques rainfall products ground validation plan
Gosset M., Roca R., Viltard N., Alcoba M., Cazenave F.
6th Workshop of the International Precipitation Working Group (IPWG6), Oct 2012, São José dos Campos, Brazil - hal-00796277

Characterization of the microphysics of ice in tropical convection for rain retrieval algorithms
Martini A., Viltard N., Gosset M. E., Cazenave P., Toledo Machado L. A.
6th Workshop of the International Precipitation Working Group (IPWG6), Oct 2012, São José dos Campos, Brazil - hal-00796283

3D wind field retrieval from spaceborne Doppler radar
Lemaître Y., Viltard N.
Proceedings SPIE 8523, Remote Sensing of the Atmosphere, Clouds, and Precipitation IV, Oct 2012, Kyoto, Japan. pp.85230Q, ⟨10.1117/12.976835⟩ - hal-00785962

Comparison of tropical convective systems life cycle characteristics from geostationary and TRMM observations for the West African and South American regions
Fiolleau T., Roca R., Viltard N., Angelis F. C.
6th Workshop of the International Precipitation Working Group (IPWG6), Oct 2012, São José dos Campos, Brazil - hal-00796190

Autres


2023


Unsupervised Segmentation Of Microwave Brightness Temperatures To Study The Changes In The Water Cycle
Sambath V., Viltard N., Barthès L., Martini A., Mallet C.
EGU General Assembly 2023, Apr 2023, Vienna (Austria), Austria. pp.EGU23-13610, ⟨10.5194/egusphere-egu23-13610⟩ - hal-04024269 - (Communications sans actes)

2022


Unsupervised domain adaptation for GPM satellite constellation using CycleGAN
Sambath V., Viltard N., Barthès L., Martini A., Mallet C.
Climate Informatics 2022, May 2022, Asheville, United States - hal-03715703 - (Communications sans actes)

2021


DRAIN: an Deep-Learning Algorithm for Instantaneous Rain-Retrieval from GMI and DPR on GPM
Viltard N., Mallet C., Sambath V., Martini A.
AGU Fall Meeting 2021, Dec 2021, New Orleans, United States. pp.id. H15P-1230 - insu-04488992 - (Communications sans actes)

ROXI: a compact vertically-pointing X-band system for microphysics studies of ice and liquid precipitation.
Martini A., Viltard N., Bertini-Baldassini F.
AGU Fall Meeting 2021, Dec 2021, New Orleans, United States. pp.id. A25B-1673 - insu-04487497 - (Communications sans actes)

SAPHERALER: meteorological radars on stratospheric balloons concept
Martini A., Viltard N., Delanoë J., Kirstetter P.-E.
AGU Fall Meeting 2021, Dec 2021, New Orleans, United States. pp.id. A15G-1738 - insu-04464578 - (Communications sans actes)

2020


Potential of Doppler radar on a stratospheric platform for dynamical studies.
Martini A., Viltard N., Kirstetter P. E., Delanoë J.
American Geophysical Union, Fall Meeting 2020, Dec 2020, Online, Unknown Region. pp.abstract #A217-0003 - insu-04453984 - (Communications sans actes)

Use of Deep-Leaning U-nets to Address the Problem of Rain Retrieval from Passive Microwave Radiometers
Viltard N., Lepetit P., Mallet C., Barthès L., Martini A.
AGU Fall Meeting 2020, Dec 2020, Online, Unknown Region. pp.H206-06 - insu-03569190 - (Communications sans actes)

2019


Stratospheric Radar Observations of Convection and Precipitation
Kirstetter P. E., Palmer R. D., Bodine D. J., Homeyer C. R., Yu T. Y., Biggerstaff M. I., Bluestein H. B., Cavallo S. M., Cheong B. L., Jung Y., Mcdaniel J. et al.
American Geophysical Union, Fall Meeting 2019, Dec 2019, San Francisco, United States. pp.abstract #A33Q-2938 - insu-04486973 - (Communications sans actes)

Potential of a radar on a High-Altitude Platform to retrieve Dynamics and Microphysics in convection.
Martini A., Viltard N., Kirstetter P., Delanoë J.
American Geophysical Union, Fall Meeting 2019, Dec 2019, San Francisco, United States. pp.abstract #H13P-1963 - insu-04443967 - (Communications sans actes)

Statistical database from existing data sets to assess the performances of a dynamics and microphysics studies-oriented mission: DYCECT
Viltard N., Martini A., Delanoë J.
AGU Fall Meeting 2019, Dec 2019, San Francisco, United States. pp.abstract #H21E-06 - hal-02389907 - (Communications sans actes)

Deep Learning pour le traitement des Images Radar
Lepetit P., Barthès L., Ly C., Mallet C., Viltard N., Lemaître Y., Vogt V.
Journées R & D - Intelligence Artificielle - Centre international de Conférences de Météo France, Jun 2019, Toulouse, France - insu-02359480 - (Communications sans actes)

Weakly-supervised Restoration of Meteorological Data by Deep Learning
Lepetit P., Barthès L., Mallet C., Ly C., Lemaître Y., Viltard N.
Conférence ENVIREM 2019, Jul 2019, Palaiseau, France - insu-02360403 - (Communications sans actes)

2018


Rainfall imprint on SMOS and SMAP Sea Surface Salinity
Supply A., Boutin J., Vergely J.-L., Hasson A., Reverdin G., Mallet C., Viltard N.
2018 Ocean Sciences Meeting, Feb 2018, Portland, Oregon, United States - insu-01759737 - (Communications sans actes)

DYCECT-WIVERN: mesurer les vitesses Doppler pour restituer le vent 3D dans la convection
Viltard N., Martini A., Lemaître Y.
Radars : Technologies, Méthodologies et Applications R-TMA-2018, Dec 2018, Guyancourt, France - insu-02089010 - (Communications sans actes)

2017


GT Précipitation (SIRTA)
Banson S., Baray J.-L., Barthès L., Bastin S., Chazottes A., Delanoë J., Dilmi D., Dupont J.-C., Gires A., Hallali R., Jahangir E. et al.
Journée Scientifique SIRTA 2017, Jun 2017, Palaiseau, France. 2017 - insu-01657474 - (Poster)

Precipitation estimates from L-Band Radiometer Sea Surface Salinity
Supply A., Boutin J., Vergely J.-L., Reverdin G., Hasson A., Viltard N., Mallet C.
EGU General Assembly 2017, Apr 2017, Vienna, Austria. pp.EGU2017-9068 - insu-01530392 - (Communications sans actes)

2016


What can we learn on rainfall from SMOS Sea Surface Salinity?
Supply A., Boutin J., Vergely J.-L., Hasson A., Mallet C., Reverdin G., Viltard N.
AGU Fall Meeting 2016, Dec 2016, San Francisco, United States - insu-01423813 - (Poster)

2015


Typhoon Bopha: Impact of an extreme tropical cyclone on the atmospheric water and energy cycle
Garot T., Brogniez H., Viltard N.
Our Common Future Under Climate Change, International Scientific Coference, Jul 2015, Paris, France. pp.P-1109-02, 2015 - insu-01183718 - (Poster)

Rain retrieval using the SAPHIR water vapor sounder on Megha-Tropiques.
Martini A., Viltard N., Sivira R.
6th Asia/Oceania Meteorological Satellite Users’ Conference, Nov 2015, Tokyo, Japan - hal-01248281 - (Poster)

Impact of tropical cyclones on the tropospheric water and energy cycle at synoptic scale : a case study
Garot T., Brogniez H., Viltard N.
EGU General Assembly 2015, Apr 2015, Vienna, Austria. pp.id.6098 - insu-01183865 - (Communications sans actes)

Post-GPM rain retrieval and 3-D wind retrieval: the DYCECT mission.
Lemaître Y., Martini A., Viltard N., Arago Higueras N., Delanoë J., Le Gac C.
6th Asia/Oceania Meteorological Satellite Users’ Conference, Nov 2015, Tokyo, Japan - hal-01248278 - (Poster)

2014


Etude d'évènements pluviométriques intenses à partir du satellite Megha-Tropiques
Garot T., Viltard N., Brogniez H.
3ème Journée Thématique du PNTS (Programme national de télédétection spatiale), Nov 2014, Paris, France. 2014 - hal-01117804 - (Poster)

Use of MADRAS on Megha-Tropiques to study Hurricane Sandy and Typhoon Bophat Evolution
Viltard N., Martini A.
31st Conference on Hurricanes and Tropical Meteorology, American Meteorological Society, Mar 2014, San Diego, United States - insu-01140502 - (Communications sans actes)

Evolution temporelle de variables du bilan d'eau dans la convection tropicale à partir des données de Megha-Tropiques
Garot T., Viltard N., Brogniez H.
Colloque GDR Megha-Tropiques, Dec 2014, Bordeaux, France - hal-01118082 - (Communications sans actes)

Characterization of the microphysics of ice in tropical convection
Martini A., Viltard N.
31st Conference on Hurricanes and Tropical Meteorology, American Meteorological Society, Mar 2014, San Diego, United States - insu-01140497 - (Communications sans actes)

Impact of tropical mesoscale convective systems on upper tropospheric humidity : exploitation of Megha-Tropiques data
Garot T., Brogniez H., Viltard N.
The 2014 Eumetsat Meteorological Satellite Conference, Sep 2014, Geneva, Switzerland - hal-01118334 - (Communications sans actes)

2012


Megha-Tropiques mission status
Viltard N., Roca R., Brogniez H., Gosset M.
6th Workshop of the International Precipitation Working Group (IPWG6), Oct 2012, São José dos Campos, Brazil - hal-00796286 - (Communications sans actes)



Derniére mise à jour le 28/03/2024 à 03:07:49