CNRM -GAME (URA CNRS & Météo-France)


Groupe de Météorologie à Moyenne Echelle

MOdélisation de l’Atmosphère Nuageuse et Analyse

42, Av. G. Coriolis

31057 Toulouse Cedex 1, France

Tél. +33 (0) 5 61 07 96 33

Fax +33 (0) 5 61 07 96 26

courriel : fleur (dot) couvreux (at) meteo (dot) fr

  Thèmes de recherche

Etudes des processus de couche limite

Développement et Evaluation des paramétrisations


Publications avec comités de lecture

  • Brient F, Couvreux F, Rio C, Honnert R, Coherent subsiding structures in large eddy simulations of atmospheric boundary layers, minor revision for QJRMS
  • Champouillon A, Rio C, Couvreux F, 2023 : Simulating the transition from shallow to deep convection across scales : the role of congestus clouds, minor revision in JAS
  • Brilouet PE, Redeslperger J L, Bouin M N, Couvreux F, Villefranque N, 2023 : Ocean surface layer response to shallow convection : impact of cloud shading, rain and cold pool, minor revision in QJRMS
  • Maury N, Roberts G, Couvreux F, Verdu T, Narvor P, Lacroix S, Hattenberger G, 2023 : Quantifying thermodynamical properties and temporal evolution of far-weather cumulus during EUREC4A field campaign with Remotely Piloted Aircrafts, QJRMS, 149, 752, p809-829
  • Brilouet PE, Bouniol D, Couvreux F, Ayet A, Granero-Belinchon C, Mouche A, 2023 : Clear-sky turbulence and shallow convection : new insights combining SAR images, Satellite Brightness temperature and In-situ measurements, Geophys. Res. Letters, 50, 2
  • Dauhut T, Couvreux F, Bouniol D, Beucher F, Volkmer L, Portge V, Schafer M, Ayet A, Brilouet P.E, Jacob M, Wirth M, 2023 Flower trade-wind clouds are shallow mesoscale convective systems, QJRMS,149,325-347,
  • Balaji, Couvreux F, Deshayes J, Gautrais J, Hourdin F, Rio C, 2022 : Are GCM obsolete ? PNAS 119 (47) e2202075119
  • Beucher F, Couvreux F, Bouniol D, Favot F, G. Faure, T. Dauhut, A. Ayet, 2022 : Process-oriented evaluation of the oversea AROME configuration : focus on the representation of cloud organisation, QJRMS, 148, 3429-3447 :
  • Tomasini M, Guichard F, Couvreux F, Roerhig R, Barbier J, 2022 : Spurious effects of the deep convection parametrization on the simulation of a Sahelian heatwave, QJRMS, 148 (748), 3071-3098
  • Fleury A, Bouttier F, Couvreux, F, 2022 : Process-oriented stochastic perturbations applied to the parameterization of turbulence and shallow-convection for ensemble prediction. QJRMS
  • Maury N, Roberts G, Couvreux F, Verdu T, Narvor P, Villefranque N, Lacroix S, Hattemberg G, 2022 : Use of Large-Eddy simulations to design an adaptive sampling strategy to assess cumulus cloud heterogeneities by UAV. Atmos. Meas. Tech., 15, 335–352, 2022
  • Jahangir E, Libois Q, Couvreux F, Vié B, Saint-Martin D 2021 : Uncertainty of SW cloud radiative forcing in atmospheric models due to the parameterization of liquid cloud optical properties. JAMES. 13, e2021MS002742.
  • Ayet A, Rascle N, Chapron B, Couvreux F, Terray L, 2021 : Air-sea interactions in ocean submesoscale frontal regions from high-resolution satellite observations. CLIVAR
  • Hattenberger G, Verdu T, Maury N, Narvor P, Couvreux F, Bronz M, Lacroix S, Roberts G, 2021 : Field report : deployment of a fleet of drones for cloud exploration. Proceedings of the International Micro Aerial Vehicles Conference (IMAV) 2021
  • Bouniol D, Guichard F, Barbier J, Couvreux F, Roehrig R, 2021 : Sahelian heat wave characterisation from observational data sets, J. Geo. Research, 126, 11,
  • Villefranque N, S Blanco, F Couvreux, R Fournier, J Gautrais, R Hogan, F Hourdin, V Volodina, D Williamson 2021:Process-based climate model development harnessing machine learning : III : guiding the choice of cumulus geometry parameters in a radiative transfer scheme, JAMES, 13. 10.1029/2020MS002423.
  • Brilouet P E, Redeslperger J L, Bouin M N, Couvreux F, Lebeaupin-Brossier C, 2021 : A Case Study of the Coupled Ocean-Atmosphere Response to an Oceanic Diurnal Warm Layer, QJRMS, 1-25.
  • Audouin, 0., R. Roehrig, F. Couvreux, D. Williamson, 2021 : Modeling the GABLS4 strongly-stable boundary layer with a GCM turbulence parameterization : parametric sensitivity or intrinsic limits ? Journal of Advances in Modeling Earth Systems, 12, e2020MS002217.
  • Hourdin F, D Williamson, C Rio, F Couvreux, R Roehrig, N Villefranque, I Musat, L Fairhead, F B Diallo, V Volodina, 2021 : Process-based climate model development harnessing machine learning : II : model calibration from single column to global. Journal of Advances in Modeling Earth Systems, 13, e2020MS002225.
  • Couvreux F, F Hourdin, D Williamson, R Roehrig, V Volodina, N Villefranque, C Rio, O Audouin, J Salter, E Bazile, F Brient, F Favot, R Honnert, M-P Lefebvre, J-B Madeleine, Q Rodier, W Xu, 2021 : Process-based climate model development harnessing machine learning : I. A calibration tool for parameterization improvement. Journal of Advances in Modeling Earth Systems, 13, e2020MS002217.
  • 2020

  • Verdu T, Maury N, Navor P, Seguin F, Roberts G, Couvreux F, Cayez G, Bronz M, Hattenberger G, Lacroix S, 2020 : Experimental flights of adaptive patterns for cloud exploration with UAVS accepted to IROS 20
  • Morales M, Cook E R, Barichivich J, Christie D A, Villalba R, Lequesne C, Srur A M, Ferrero M E, Gonzales-Reyes , Couvreux F, Matskovsky V, Aravena J C, Lara A, Mundo I A, Rojas F, Prieto M R, Smerdon J E, Bianchi L O, Masiokas M, Urrutia R, Rodriguza-Caton M, Munoz A A, Rojas-Badilla M, Alvarez C, Lopez L, Luckman B H, Lister D, Harris I, Jones P D, Williams A P, Velazquez G, Aliste D, Aguilera-Betti I, Marcotti E, Flores F, Munoz T, Cuq E, Bonisegna J A, 2020 : 600 years of South American tree rings reveal an increase in severe hydroclimatic events since mid-20th century, PNAS, 117, 29,16816-16823
  • Largeron Y, Guichard F, Roehrig R, Couvreux F,, Barbier J 2020 : The April 2010 North African heatwave : when the water vapour greenhouse effect drives nighttime temperatures, Climate Dynamics, 54, 3879-3905,
  • Couvreux F, Bazile, E, Rodier Q, Maronga B, Matheou G, Chinita M, Edwards J, BJ H Van Stratum, C Van Heerwaarden, J Huang, A F Moene, A Cheng, V Fuka, S Basu, E Bou-Zeid, G Canut, E Vignon, 2020 : The GABLS4 model intercomparison, a challenging intercomparison for Large-Eddy simulations in very stable conditions. Boun-Lay Meteorology 176 (3), 369-400 DOI : 10.1007/s10546-020-00539-4
  • 2019

  • Hourdin F, Jam A, Rio C, Couvreux F, Sandu I, Lefebvre M.P., Brient F., Idelkadi A, 2019 : Unified parameterization of convective boundary layer transport and clouds with the thermal plume model, Journal of Advances in Modeling Earth Systems, 11, 9, 2910-2933,
  • Villefranque N, Fournier R, Couvreux F, Blanco S, Eymet V, Forest V, Tregan J.M., 2019 : A path-tracing Monte Carlo Library for 3-D radiative transfer in highly resolved cloudy atmospheres, Journal of Advances in Modeling Earth Systems, 11, 8, 2449–2473.
  • Brient F., Couvreux F, Villefranque N, Rio C, Honnert R, 2019 : Object-oriented identification of coherent structures in large-eddy simulations : importance of downdrafts in stratocumulus Geophysical Research Letters, 46, 1-11,
  • 2018

  • Jouhaud, J., Dufresne, J.‐L., Madeleine, J.‐B., Hourdin, F., Couvreux, F., Villefranque, N., & Jam, A. (2018). Accounting for vertical subgrid‐scale heterogeneity in low‐level cloud fraction parameterizations. Journal of Advances in Modeling Earth Systems, 10.
  • Brosse F, Leriche M, Mari C, Couvreux F, 2018 : LES study of the impact of moist thermals on the oxidative capacity of the atmosphere in southern West Africa, Atmos. Chem. Phys., 18, 6601–6624,
  • Lac C, Chaboureau JP, Masson V, Pinty JP, Tulet P, Escobar J, Leriche M, Barthe C, Aouizerats B, Augros C, Aumond P, Auguste F, Bechtold P, Berthet S, Bieilli S, Bosseur F, Caumont O, Cohard JM, Colin J, Couvreux F, Cuxart J, Delautier G, Dauhut T, Ducrocq V, Filippi JB, Gazen D, Geoffroy O, Gheusi F, Honnert R, Lafore JP, Lebeaupin C, Libois Q, Lunet T, Mari C, Maric T, Mascart P, Mogé M, Moliié G, Nuissier O, Pantillon F, Peyrillé P, Pergaud J, Perraud E, Pianezze J, Redelsperger J L, Ricard D, Richard E, Riette S, Rodier Q, Seyfried L, Stein J, Suhre K, Thouron O, Turner S, Verrelle A, Vié B, Visentin F, Vionnet V, Wautelet P, 2018 : Overview of the Meso-NH model version 5.4 and its applications, GMD, 11, 5, 1929-1969, doi ://10.5194/gmd-11-1929-2018
  • Barbier J, Guichard F, D Bouniol, F Couvreux, Roehrig R, 2018 : Sahelian heatwaves : detection, characteristics and historical trend, Journal of Climate, Vol 31, 1, 61-80, doi ://10.1175/JCLI-D-17-0244.1
  • Bourgeois E, Bouniol D, Couvreux F, Guichard F, Marsham J, Garcia-Carreras L, Brich C, Parker D 2018 : Characteristics of mid-level clouds over West Africa QJR Meteorol Soc, 144, 711, 426-442, doi:10.1002/qj.3215


  • Rodier Q, Masson V, Couvreux F, Paci A, 2017 : Evaluation of a buoyancy and shear based mixing length for a turbulence scheme in revision for Frontiers, 5, 65. doi : 10.3389/feart.2017.00065
  • Guichard F, Couvreux F, 2017 : A short review of numerical cloud-resolving models. Tellus A : Dynamic Meteorology & Oceanography, 69, 1373578,
  • -*
  • Habilitation à Diriger des recherches : Contribution à l’analyse des processus de couche limite et à leur représentation dans les modèles à partir de simulations explicites
  • Rottner L, Baehr C, Couvreux F, Canut G, Rieutord T, 2017 : A new downscaling method for sub-grid turbulence modeling ; Atmos. Chem. Phys., 17, 6531-6546,
  • 2016

  • Rochetin N, Couvreux F, Guichard F, 2016 : Morphology of breeze circulations by surface flux heterogeneities : sensitivity to low level wind and its impact on convection initiation ; Quaterly Journal of the Royal Meteorological Society 702, 463-478, doi:10.1002/qj.2935
  • Canut G, Couvreux F, Lothon M, Legain D, Piguet B, Lampert A, Moulin E, 2016 : Turbulence measurements with a tethered balloon, Atmospheric Measurement Techniques, 9, 4375-4386 ; doi:10.5194/amt-9-4375-2016
  • Falaschi D, Masiokas M, Tadono T, Couvreux F, 2016 : ALOS-derived glacier and rock glacier inventory of the Volcan Domuyo regio ( 36°S), southernmost Central Andes, Argentina, in press for Zeitschrift für Geomorphologie
  • Couvreux F, E Bazile, G Canut, Y Seity, M Lothon, F Lohou, F Guichard, E Nilsson, 2016 : Representation of the afternoon transition in Numerical Weather Prediction models : evaluation with BLLAST data, Atmos. Chem. Phys., 16, 8983-9002, doi:10.5194/acp-16-8983-2016
  • Bianchi E, Villalba R, Viale M, Couvreux F, 2016 : New precipitation and temperature grids for northern Patagonia : advances in relation to global climate grids, J of Meteorol Res, 30, 38-52
  • Honnert R, F Couvreux, V Masson, D Lancz, 2016 : Sampling the structure of convective turbulence and implications for Grey-Zone Parameterizations ; Boun -Lay Meteorol, 15, 10071-10086, doi:10.1007/s10546-016-0130-4


  • Darbieu C, F Lohou, M Lothon, J Via-Guerau de Arellano, F Couvreux, P Durand, D Pino, E Patton, E Nilsson, E Blay-Carreras, B Gioli, 2015 : Turbulence vertical structure of the boundary layer during the afternoon transition ; Atmos. Chem. Phys., 15, 10071-10086, doi:10.5194/acp-15-10071-2015
  • Couvreux F, R Roehrig, C Rio, MP Lefebvre, M Caian, T Komori, S Derbyshire, F Guichard, F Favot, F D’andrea, P Bechtold, P Gentine, 2015 : Daytime moist convection over the semi-arid Tropics : impact of parametrizations used in CMIP5 and other models, in press QJR Meteorol Soc, 141, 2220-2236. Doi:10.1002/qj.2517
  • Masiokas M, S. Delgado, P. Pitte, E. Berthier, R. Villalba, P. Skvarca, L. Ruiz, J. Ukita, T. Yamanokuchi, T. Tadono, S. Marinsek, F. Couvreux, L. Zalazar, 2015 : Inventory and recent changes of small glaciers on the northeast margin of the South Patagonian Icefield, Argentina, Journal of Glaciology, 61, 227, 511-523
  • Largeron Y., F Guichard, D Bouniol, F Couvreux, L Kergoat, B Marticorena, 2015 : On the importance of wind fields for dust emission over the Sahel, GRL,42, 2490-2499. Doi:10.1002/2014GL062938
  • Locatelli R, P Bousquet, F Hourdin, M Saunois, A Cozis, F Couvreux, J Y Grandpeix, M P Lefebvre, C Rio, P Bergamaschi, S D Chambers, U Karstens,V Kazan, S Van Der Laan, H Meijer, J Moncrieff, M Ramonet, B Scheeren, C Schlosser, M Schmidt, A Vermeulen, A G Williams, 2015 : Atmospheric transport and chemistry of trace gases in LMDZ5B : evaluation and implications for inverse modelling Geosci Model Dev,8, 129-150
  • Poan E., J.-P. Lafore, R. Roehrig, F. Couvreux, 2015 : Internal processes within the African Easterly Wave System. Q. J R. Meteorol Soc , 114, 1121-1136, DOI:10.1002/qj.2420


  • M. Lothon , F. Lohou, D. Pino, F. Couvreux, E. Pardyjak, J. Reuder, J. Vila-Guerau de Arellano, P. Durand, I. Faloona, O. Hartogensis, D. Legain, D. Alexander, W.M. Angevine, P. Augustin, E. Bargain, J. Barrié, E. Bazile, Y. Bezombes, E. Blay, A. van de Boer, J.-L. Boichard, A. Bourdon, A. Butet, B. Campistron, O. de Coster, J. Cuxart, A. Dabas, C. Darbieu, K. Deboudt, H. Delbarre, S. Derrien, P. Flament, M. Fourmentin, A. Garai, F. Gibert, B. Gioli, A. Graf, J. Groebner, F. Guichard, M. Jonassen, A. von Kroonenbeerg, D. Lenschow, E. Magliulo, S. Martin, D. Martinez, L. Mastrorillo, A. Moene, F. Molinos, E. Moulin, H. Pietersen, B. Piguet, E. Pique, C. Roman, C. Rufin-Soler, F. Said, M. Sastre, Y. Seity, G.-J. Steeneveld, P. Toscano, O. Traullé, D. Tzanos, C. Yague, S. Wacker, N. Wildmann., A Zaldei, 2014. The BLLAST field experiment : Boundary-Layer Late Afternoon and Sunset Turbulence, Atmos Chem Phys, 14, 10931-10960, doi:10.5194/acp-14-10931-2014
  • Rochetin N., F. Couvreux, J.-Y. Grandpeix and C. Rio, 2014 : Deep convection triggering by boundary layer thermals. Part 1 : LES analysis and stochastic triggering formulation. Journal of Atmospheric Sciences,71, 2,496-514
  • Rochetin N., J.-Y. Grandpeix, C. Rio and F. Couvreux , 2014 : Deep convection triggering by boundary layer thermals. Part 2 : Stochastic triggering parametrization for the LMDZ GCM. Journal of the Atmospheric Sciences, 71, 2, 515-538
  • Couvreux F., F. Guichard., A. Gounou, D. Bouniol, P. Peyrillé, M. Koehler, 2014 : Modelling of the diurnal cycle in the lower atmosphere : a joint evaluation of four contrasted climates along a surface temperature gradient over land. Boundary-Layer Meteorology, 150, 2, 185-214 http://dx/
  • Dione C., M. Lothon, D. Badiane, B. Campistron, F. Couvreux, F. Guichard and M. S. Sall, 2014 : Phenomenology of Sahelian convection observed in Niamey during the early monsoon in QJRMS 140, 679, 500:516 DOI:10.1002/qj.2149


  • Poan E, R. Roehrig, F. Couvreux, J.-P. Lafore, 2013 : West Africa Intraseasonal variability : a Precipitable Water perspective, Journal of Atmospheric Sciences, 70, 4, 1035-1052.doi :
  • Rio C., J.-Y. Grandpeix, F. Hourdin, F. Guichard, F. Couvreux, J.-P. Lafore, A. Fridlind, A. Mrowiec, N. Rochetin, A. Idelkadi, M.-P. Lefebvrre, I. Musat, R. Roehrig, S. Bony, 2013 : Control of deep convetion by sub-cloud processes : The ALP closure in LMDZ5.b model, Cli. Dynamics 40,9-10:2271-2292 doi:10.1007/s00382-012-1506-x
  • Jam A., F. Hourdin, F. Couvreux and C. Rio, 2013 : Resolved versus parametrized boundary-layer plumes. Part III : A simple cloud parameterization derived from Large Eddy Simulations. Boundary-Layer Meteorology, 147, 3 : 421-441


  • Gounou A, F. Guichard and F. Couvreux, 2012 : Observations of diurnal cycles over West-African meridional transect : pre-onset and post-onset periods, Boundary-Layer Meteorology, 144,329-357. DOI 10.1007/s10546-012-9723-8
  • Bouniol D., F. Couvreux, P.-H. Kamsu-Tamo, M. Leplay, F. Guichard, F. Favot, E. O’Connor, 2012 : Diurnal and seasonal cycles of cloud occurrences, types and radiative impact over West Africa. Journal of Applied Meteorology and Climatology, 51, 534-553. DOI : 10.1175/JAMC-D-11-051.1
  • Canut, G., F. Couvreux, M. Lothon, D. Pino, F. Said, 2012 : Entrainment in the Sahelian boundary layer analyzed by observations and large-eddy simulations, 2012 : Boundary-Layer Meteorology, 142,79-101. DOI:10.1007/s10546-011-966 1
  • Couvreux F, C. Rio, F. Guichard, M. Lothon, G. Canut, D. Bouniol, A. Gounou, 2012 : Initiation of daytime local convection in a semi-arid region analyzed with Large-Eddy Simulations and AMMA observations, Quarterly Journal of the Royal Meteorological Society, 138, 56-71, DOI:10.1002/qj.903


  • Honnert, R., V. Masson and F. Couvreux , 2011 : Which turbulence in atmospheric models at 1 kilometer resolution ? Journal of Atmospheric Sciences, Vol. 68, 12. 3112-3131. DOI : 10.1175/JAS-D-11-061.1
  • Perraud, E., F. Couvreux, S. Malardel, C. Lac, V. Masson, O. Thouron, 2011 : Evaluation of statistical distributions for the parameterization of subgrid boundary-layer clouds, Boun-Lay Meteorol, 140, Iss 2, 263-294, DOI : 10.1007/s10546-011-9607-3
  • Taylor, C., A. Gounou, F. Guichard, P. Harris, R. J. Ellis, F. Couvreux, M. De Kauwe, 2011 : Frequency of Sahelian storm initiation doubled over mesoscale soil moisture patterns. In press for Nature Geosciences, 4, 7, 430-433. DOI : 10.1038/NGEO1173
  • M.C. VanZanten, B. Stevens, L. Nuijens, A. P. Siebesma, A. Ackerman, F. Burnet, A. Cheng, F. Couvreux, H. Jiang, M. Khairoutdinov, D. S. Lewellen, D. Mechem, A. Noda, B. Shhipway, J. Slawinska, S. Wang, A. Wyszogrodzski, 2011 : Controls on precipitation and cloudiness in simulations of trade-wind cumulus as observed during RICO, JAMES-D, Vol. 3, Art. M06001, doi:10.3894/JAMES.2011.3.


  • Rio, C., F. Hourdin, F. Couvreux and A. Jam : Resolved versus parametrized boundary-layer plumes. Part II : Continuous formulation of mixing rates for mass-flux schemes in press for Boundary Layer Meteorology. DOI : 10.1007/s10546-010-9478-z (
    rio etal BLM 2010
  • Couvreux, F., F. Hourdin and C. Rio, 2010 : Resolved versus parametrized boundary-layer plumes. Part I : a parametrization-oriented in press for Boundary Layer Meteorology. Vol 134, Iss 3, p 441-458 DOI : 10.1007/s10546-009-9456-5 (
    couvreux etal BLM 2010
  • Couvreux, F., F. Guichard, O. Bock, J.-P. Lafore, J.-L. Redelsperger, 2010 : Monsoon flux pulsations over West Africa prior to the monsoon onset in press for Q. J. of Royal Meteorol. Soc, DOI : 10.1002/qj.473 (
    couvreux etal QJRMS 2009
  • Van Heerwaarden C. C., J. Vila-Guerau de Arellano, A. Gounou, F. Couvreux, F. Guichard : Understanding the daily cycle of evapotranspiration : a new method to quantify the influence of forcings and feedbacks. In press for Journal of Hydrometeorology ( 10.1175/2010JHM1272.1)
  • Yano, J.-I., P. Bernardet, P. Benard, F. Couvreux and A. Lahellec : Nonhydrostatic anelastic model under segmentally-constant approximation : II. Dry version with adaptive activation and deactivation of segments. Mon. Wea. Rev. ; 138, 195761974 (
  • Lothon M., B. Campistron, M. Chong, F. Couvreux, F. Guichard, C. Rio, E. Williams : Life cycle of a mesoscale circular gust front observed by a C-band Doppler radar in West Africa . In press for Monthly Weather Review (


  • Pergaud, J., V. Masson, S. Malardel, F. Couvreux, 2009 : A parameterization of Dry thermals and shallow cumuli for mesoscale numerical weather prediction. Boundary-Layer Meteorology. 132, 83-106. DOI 10.1007/s10546-009-9388-0 (
    pergaud etal BLM 2009
  • Couvreux, F., F. Guichard, P. H. Austin and F. Chen, 2009 : Nature of the mesoscale boundary-layer height and water-vapor variability observed 14 June 2002 during the IHOP_2002 campaign. Monthly Weather Review, 137, 414-432. DOI : 10.1175/2008MWR2367.1 (
    couvreux etal MWR 2009


  • Lothon, M., F. Couvreux, S. Donier, F. Guichard, P. Lacarrère, J. Noilhan and F. Said, 2007 : Impact of the organized structures on estimates of vertical turbulent fluxes from airplane measurements. Boundary Layer Meteorology. 124, 425-447. DOI : 10.1007/s10546-007-9182-9 (
    lothon etal BLM 2007
  • Couvreux, F., F. Guichard, V. Masson and J.L. Redelsperger, 2007 : Negative water vapour skewness and dry tongues in the convective boundary layer : observations and LES budget analysis. Boundary Layer Meteorology. 123, 269-294. DOI : 10.1007/s10546-006-9140-y (
    couvreux etal BLM 2007


  • Couvreux, F., F. Guichard, J.L. Redelsperger, C. Kiemle, V. Masson, J.P. Lafore and C. Flamant, 2005, Assessment of water vapour variability within a convective boundary layer over land using Large Eddy Simulations and IHOP observations. Quarterly Journal of the Royal Meteorological Society, 131,2665-2693. DOI:10.256/qj.04.167 (
    couvreux etal QJRMS 2005


  • Hourdin, F., F. Couvreux and L. Menut, 2002 : Parameterization of the dry convective boundary layer based on a mass flux representation of thermals. Journal of Atmospheric Sciences, 59, 1105-1123. DOI : (
    hourdin etal JAS 2002
  • Water vapour variability in the convective boundary layer, PhD dissertation, University of Paul Sabatier, Toulouse, 2005, France


  • Titre : Variabilité de la vapeur dans la couche limite convective
  • Résumé : La variabilité de la vapeur d’eau dans la couche limite convective continentale en croissance est étudiée à partir de simulations te d’observations de la campagne IHOP_2002. Les fluctuations observées résultent de contributions d’échelles différentes. La variabilité de la vapeur d’eau est importante. Elle est bien simulée par LES et s’explique, au premier ordre, par la dynamique de la couche limite. Les observations comme les simulations indiquent des distributions asymétriques de vapeur d’eau dans la couche limite. Elles résultent d’intrusions d’air sec depuis le sommet de la couche limite et soulignent le rôle de l’entraînement. Une méthodologie originale permet de déterminer l’influence de l’advection horizontale, des hétérogénéités de surface et des inhomogénéités initiales de l’atmosphère sur la variabilité à méso-échelle. Enfin la représentation de la variabilité de l’humidité par les paramétrisations est discutée dans un cadre uni-dimensionnel.
these couvreux 2005

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