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Haeffelin, M. / Barthès, Laurent / Bock, Olivier / Boitel, C. / Bony, S. / Bouniol, Dominique / Chepfer, H. / Chiriaco, Marjolaine / Cuesta, J. / Delanoë, Julien / Drobinski, P. / Dufresne, J.-L. / Flamant, Cyrille / Grall, M. / Hodzic, A. / Hourdin, F. / Lapouge, F. / Lemaître, Yvon / Mathieu, A. / Morille, Y. / Naud, C. / Noël, Vincent / O'Hirok, W. / Pelon, Jacques / Pietras, C. / Protat, Alain / Romand, B. / Scialom, Georges / Vautard, R. - 2005International audienceContributeur (s):
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Protat, Alain / Delanoë, Julien / Plana-Fattori, Artemio / May, P. T. / O'Connor, E. J. - article in peer-reviewed journal - 2010In the present paper we characterize the statistical properties of non-precipitating tropical ice clouds (deep ice anvils resulting from deep convection and cirrus clouds) over Niamey, Niger, West Africa, and Darwin, northern Australia, using ground-based radar-lidar observations from the...Contributeur (s):
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Protat, Alain / Delanoë, Julien / J. O'Connor, E. / S. L'Ecuyer, T. - article in peer-reviewed journal - 2010In this paper the statistical properties of tropical ice clouds (ice water content, visible extinction, effective radius, and total number concentration) derived from three years of ground-based radarlidar retrievals from the U. S. Department of Energy Atmospheric Radiation Measurement Climate...Contributeur (s):
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Bouniol, Dominique / Protat, Alain / Delanoë, Julien / Pelon, Jacques / Piriou, Jean-Marcel / Bouyssel, François / Tompkins, Adrian M. / Wilson, Damian R. / Morille, Yohann / Haeffelin, Martial / O'Connor, Ewan J. / Hogan, Robin J. / Illingworth, Anthony J. / Donovan, David P. / Baltink, Henk-Klein - article in peer-reviewed journal - 2010The ability of four operational weather forecast models (ECMWF, ARPEGE, RACMO and Met Office) to generate a cloud at the right location and time (the cloud frequency of occurrence) is assessed in the present paper using a two-year time serie of observations collected by profiling ground-based...Contributeur (s):
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Bouniol, D. / Delanoë, Julien / Duroure, C. / Protat, Alain / Giraud, V. / Penide, G. - article in peer-reviewed journal - 2010Deep convection in the Tropics is the source of large tropospheric extended clouds usually called anvils. These anvils may produce precipitation (stratiform region of deep convective storms), and also cirrus shields persisting from several hours to several days. Anvils impact the radiation budget,...Contributeur (s):
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Stein, Thorwald H. M. / Delanoë, Julien / Hogan, Robin J. - article in peer-reviewed journal - 2011The A-Train constellation of satellites provides a new capability to measure vertical cloud profiles leading to more detailed information on ice-cloud microphysical properties than has been possible up to now. A variational radar-lidar ice-cloud retrieval algorithm, VarCloud, takes advantage of the...Contributeur (s):
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Delanoë, Julien / Hogan, Robin J. / Forbes, Richard M. / Bodas-Salcedo, Alejandro / Stein, Thorwald H. M. - article in peer-reviewed journal - 2011Ice cloud representation in general circulation models remains a challenging task, due to the lack of accurate observations and the complexity of microphysical processes. In this article, we evaluate the ice water content (IWC) and ice cloud fraction statistical distributions from the numerical...Contributeur (s):
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Protat, Alain / Mcfarquhar, G. M. / Um, J. / Delanoë, Julien - article in peer-reviewed journal - 2011Best estimates of the bulk microphysical and radiative properties (ice water content, visible extinction, effective radius, and total concentration) are derived for three case studies of tropical ice clouds sampled during the Tropical Warm Pool International Cloud Experiment (TWP-ICE). Two case...Contributeur (s):
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Protat, Alain / Delanoë, Julien / May, P. T. / Haynes, J. / Jakob, C. / O'connor, E. / Pope, M. / Wheeler, M. C. - article in peer-reviewed journal - 2011The statistical properties of non-precipitating tropical ice clouds over Darwin, Australia are characterized using ground-based radar-lidar observations from the Atmospheric Radiation Measurement (ARM) Program. The ice cloud properties analysed are the frequency of ice cloud occurrence, the...Contributeur (s):
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Delanoë, Julien / Protat, Alain / Flamant, Cyrille - conference, seminar, workshop communication - 2011In this presentation we will show a cloud properties climatology using radar-lidar synergy from CloudSat/CALIPSO above the Hymex area. This work aims to aide preparation for the future Hymex airborne measurements campaign in Autumn 2012 and also to understand the role of stratiform clouds as "...Contributeur (s):
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Zhao, Chuanfeng / Xie, Shaocheng / Klein, Stephen A. / Protat, Alain / Shupe, Matthew D. / Mcfarlane, Sally Anne / Comstock, Jennifer M. / Delanoë, Julien / Deng, Min / Dunn, Maureen / Hogan, Robin James / Huang, Dong / Jensen, Michael P. / Mace, Jay / Mccoy, Renata / O'Connor, Ewan James / Turner, David D. / Wang, Zhien - article in peer-reviewed journal - 2012Accurate observations of cloud microphysical properties are needed for evaluating and improving the representation of cloud processes in climate models and better estimate of the Earth radiative budget. However, large differences are found in current cloud products retrieved from ground-based...Contributeur (s):
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Huang, Yi / Siems, Steven T. / Manton, Michael J. / Protat, Alain / Delanoë, Julien - article in peer-reviewed journal - 2012A climatology of the thermodynamic phase of the clouds over the Southern Ocean (40-65S,100-160E) has been constructed with the A-Train merged data product DARDAR-MASK for the four-year period 2006-2009 during Austral winter and summer. Low-elevation clouds with little seasonal cycle dominate this...Contributeur (s):
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Delanoë, Julien / Protat, Alain / Vinson, Jean-Paul / Fontaine, Emmanuel / Schwarzenboeck, Alfons / Flamant, Cyrille - conference, seminar, workshop communication - 2012The airborne 95GHz cloud radar RASTA will be operated on-board the Falcon 20 during HyMeX SOP1.1 (September/October 2012). In addition to the radar, state of the art in-situ microphysical probes, such as CDP, 2DS, CPI, PIP, and Robust probe will be deployed to characterize bulk and individual...Contributeur (s):
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Ducrocq, Véronique / Belamari, Sophie / Boudevillain, Brice / Bousquet, Olivier / Cocquerez, Philippe / Doerenbecher, Alexis / Drobinski, Philippe / Flamant, Cyrille / Labatut, Laurent / Lambert, Dominique / Nuret, Mathieu / Richard, Evelyne / Roussot, Odile / Testor, Pierre / Arbogast, Philippe / Ayral, Pierre-Alain / Van Baelen, Joël / Basdevant, Claude / Boichard, Jean-Luc / Bourras, Denis / Bouvier, Christophe / Bouin, Marie-Noëlle / Bock, Olivier / Braud, Isabelle / Champollion, Cédric / Coppola, Laurent / Coquillat, Sylvain / Defer, Eric / Delanoë, Julien / Delrieu, Guy / Didon-Lescot, Jean-François / Durand, Pierre / Estournel, Claude / Fourrié, Nadia / Garrouste, Olivier / Giordani, Hervé / Le Coz, Jérôme / Michel, Yann / Nuissier, Olivier / Roberts, Gregory / Saïd, Frédérique / Schwarzenboeck, Alfons / Sellegri, Karine / Taupier-Letage, Isabelle / Vandervaere, Jean-Pierre - article in peer-reviewed journal - 2013Les risques hydrométéorologiques sont au coeur du programme de recherche HyMeX sur le cycle de l'eau en Méditerranée. HyMeX a pour ambition d'améliorer leur prévision, de mieux connaître leur variabilité à l'échelle pluriannuelle et de renseigner sur leur évolution, dans le contexte...Contributeur (s):
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Bardeen, C. G. / Gettelman, A. / Jensen, E. J. / Heymsfield, A. / Conley, A. J. / Delanoë, Julien / Deng, M. / Toon, O. B. - article in peer-reviewed journal - 2013We have developed a new cirrus model incorporating sectional ice microphysics from the Community Aerosol and Radiation Model for Atmospheres (CARMA) in the latest version of NCAR's Community Atmosphere Model (CAM5). Comparisons with DARDAR and 2C-ICE show that CAM5/CARMA improves cloud...Contributeur (s):