Peter Bechtold

Principal Scientist
Research Department, Earth System Modelling Section, Physical Processes Group

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Profile
Summary: 

Peter Bechtold is a Principal Scientist in the ECMWF Research Departments Earth System Modeling Section and is  responsible for the developments in convection. He is also involved in all aspects concerning the impact of convection on the general circulation, as well as the impact of gravity waves on the stratosphere.

Professional interests: 
  • Numerical weather prediction
  • Tropical meteorology
  • Atmospheric moist convection and turbulence
  • Physical parametrizations
Career background: 

Education

  • Studied Physics and Meteorology at the Universities of Karlsruhe (Germany) and Clermont-Ferrand (France)
  • PhD in Meteorology at University Clermont-Ferrand (1992)
  • Habilitation University Paul Sabatier, Toulouse (1998)

Professional

  • Charge de Recherche CNRS, Observatoire Midi-Pyrenees, Toulouse (1992-2002)
  • On research leave to Dutch weather service KNMI (Utrecht, Netherlands  1996-1997) and University of Lisboa (Portugal, 2002)
  • Joined ECMWF in 2002 as a senior scientist and became a principal scientist in 2015

 

External recognitions: 

CNRS Bronze medal

Publications

 

Kim, J.-E., C. Zhang, G. N. Kiladis and P. Bechtold, 2017: Heating and moistening of the MJO during DYNAMO in ECMWF reforecasts. J. Atmos. Sci.

Leutbecher, M., S.-J. Lock, P. Ollinaho, S. Lang, G. Balsamo, P. Bechtold, M. Bonavita, H. M. Christensen, M. Diamantakis, E. Dutra, S. English, M. Fisher, R. Forbes, J. Goddard, T. Haiden, R. Hogan, S. Juricke, H. Lawrence, D. McLeod, L. Magnusson, S. Malardel, S. Massart, I. Sandu. P. Smolarkiewicz, A. Subramanian, F. Vitart, N. Wedi and A. Weisheimer, 2017: Stochastic representations of model uncertainties at ECMWF: State of the art and future vision. Q. J. Roy. Meteorol. Soc., DOI: 10.1002/qj.3094

Schlemmer, L., P. Bechtold, I. Sandu and M. Ahlgrimm, 2017: Uncertainties related to the representation of momentum transport in shallow convection. J. Adv. Mod. Earth Syst., 9, 1269-1291, DOI: 10.1002/2017MS000915.

Žagar, N. D. Jelić, M. Blaauw and P. Bechtold, 2017: Energy spectra and inertia-gravity waves in global analyses. J. Atmos. Sci., 74, 2447-2466. Doi:10.1175/JAS-D-16-0341.1

Subramanian, A., A. Weisheimer, T. Palmer, F. Vitart and P. Bechtold, 2017: Impact of stochastic physics on tropical precipitation in the coupled ECMWF model. Q. J. Roy. Meteorol. Soc., 143, 852-865. DOI: 10.1002/qj.2970.

Ollinaho, P., S.-J. Lock, M. Leutbecher, P. Bechtold, A. Beljaars, A. Bozzo, R. Forbes, T. Haiden, R. Hogan and I. Sandu, 2017: Towards process-level representation of model uncertainties: Stochastically perturbed parametrisations in the ECMWF ensemble. Q. J. Roy. Meteorol. Soc., 143, 408-422, DOI: 10.1002/qj.2931.

Herman, M. J., Ž. Fuchs, D. Raymond and P. Bechtold, 2016: Convectively coupled Kelvin waves: from linear theory to global models. J. Atmos. Sci., 73, 407-428.

Sandu, I., P. Bechtold, A. Beljaars, A. Bozzo, F. Pitan, T. Shepherd, A. Zadra, 2016: Impacts of parameterized orographic drag on the Northern Hemisphere winter circulation. J. Adv. Model. Earth System, 10.1002/2015MS000564.

Semane, N. and P. Bechtold, 2015 : Convection and waves on small Earth and deep Atmosphere. Tellus A 2015, 67, 25151, http://dx.doi.org/10.3402/tellusa.v67.25151

Bechtold, P. Convection in global numerical weather prediction. In: R. S. Plant and J.-I. Yano, editors, Parameterization of Atmospheric Convection. Volume 2: Current issues and new theories, chapter 15, pages 5-46. World Scientific, Imperial College Press, 2015.

Bechtold, P., N. Semane and S. Malardel. Convection and waves on small planets and the real Earth. In: R. S. Plant and J.-I. Yano, editors, Parameterization of Atmospheric Convection. Volume 2: Current issues and new theories, chapter 17, pages 59-74. World Scientific, Imperial College Press, 2015.

Flemming, J., V. Huijnen, J. Arteta, P. Bechtold, A. Beljaars, A.-M. Blechschmidt, M.Diamantakis ,R. Engelen, A. Gaudel, A. Inness, L. Jones, E. Katragkou,  V.-H. Peuch, A. Richter, M.G. Schultz, O. Stein4 and A. Tsikerdekis, 2015: Tropospheric Chemistry in the Integrated Forecasting System of ECMWF. Geophys. Mod. Dev., DOI: 10.5194/gmd-8-975-2015

Couvreux, F., R. Roehrig, C. Rio, M.-P. Lefebvre, M. Caian, T. Komori, S. Derbyshire, F. Guichard, F. Favot, F. D'Andrea, P. Bechtold and P. Gentine, 2015. Daytime moist convection over the semi-arid Tropics: evaluation of parametrizations used in CMIP5 and other models. Q. J. Roy. Meteorol. Soc., 141, 2220-2236.

Preusse, P., M. Ern, P. Bechtold, S. D. Eckermann, S. Kalisch, Q. T. Trinh and M. Riese, 2014 : Characteristics of gravity waves resolved by ECMWF. Atmos. Chem. Phys. 14, 10483-10508, doi:10.5194/acp-14-10483-2014

Bechtold, P., N. Semane, P. Lopez, J.-P. Chaboureau, A. Beljaars and N. Bormann, 2014 : Representing equilibrium and non-equilibrium convection in large-scale models. J. Atmos. Sci, 71, 734-753. Doi 10.1175/JAS-D-13-0163.1

Ling. J., P. Bauer, P. Bechtold, A. Beljaars, R. Forbes, F. Vitart, M. Ulate and C. Zhang, 2014 : Global vs. local  MJO forecast skill of the ECMWF model during DYNAMO. Mon. Wea. Rev. 142, 2228-2247.

Ollinaho, P., H. Järvinen P. Bauer, M. Laine, P. Bechtold, J. Susiluoto and  H. Haario, 2014 : Total energy norm in NWP closure parameter optimization. Geosci. Model Dev. Dev., 7, 1889-1900, doi :10.5194/gmd-7-1889-2014.

Ollinaho, P., P. Bauer, P. Bechtold, M. Leutbecher, M. Laine, A. Solonen, H. Haario  and H. Järvinen, 2013 : Parameter variations in prediction skill optimization at ECMWF. Nonlinear Processes in Geophys. doi:10.5194/npg-20-1001-2013

Ling. J., C. Zhang, P. Bechtold, 2013 : Large-scale preconditions for MJO and non-MJO convective initiation over the tropical Indian Ocean. J. Atmos. Sci., 70, 2696-2712

Sandu, I., A. Beljaars, P. Bechtold, T. Mauritsen, and G. Balsamo, 2013 : Why is it so difficult to represent stably stratified conditions in NWP models ? J. Adv. Model. Earth System, 5, 117-133. doi :10.1002/jame.20013

Rodwell, M.,  L. Magnusson, P. Bauer, P. Bechtold,  M. Bonavita, C. Cardinali,  M. Diamantakis, P. Earnshaw;, A. Garcia-Mendez, L. Isaksen,  E. Källén, D. Klocke, P. Lopez, A. McNally, A. Persson; F. Prates; N. Wedi, 2013 : Characteristics of occasional poor medium-range weather forecasts for Europe. Bull. Americ. Meteorol. Soc., 94, 1393-1405.

Bengtsson, L., M. Steinheimer, P. Bechtold and J.-F. Geleyn, 2013: A stochastic parametrization for deep convection using Cellular Automata. Q. J. Roy. Meteorol. Soc., 139, 1533-1543. DOI: 10.1002/qj.2108

Hirons, L.C., P. Inness, F. Vitart and P. Bechtold, 2013: Understanding advances in the simulation of intraseasonal variability in the ECMWF model. Part I: The representation of the MJO. Q. J. Roy. Meteor. Soc., 139, 1417-1426.DOI: 10.1002/qj.2060

Hirons, L.C., P. Inness, F. Vitart and P. Bechtold, 2013: Understanding advances in the simulation of intraseasonal variability in the ECMWF model. Part II: The application of process-based diagnostics. Q. J. Roy. Meteor. Soc., 139, 1427-1444. DOI: 10.1002/qj.2059

Rooyde, W.  C., P. Bechtold, K. Fröhlich, C. Hohenegger, H. Jonker, S. Mironov, J. Teixeira and J.-I. Yano, 2013: Entrainment and detrainment in cumulus convection: an overview. Q. J. Roy. Meteor. Soc., 139, 1-19.

Williamson, L., Blackburn, M, K. Nakajima, W. Ohfuchi, O. Takahashi, Y.-Y. Hayashi, H. Nakamura, M. Ishiwatari, J. McGregor, H. Borth, V. Wirth, H. Frank, P. Bechtold, N. P. Wedi, H. Tomita, M. Satoh, M. Zhao, I. M. Held, Max J. Suarez, M.-I. Lee, M. Watanabe, M. Kimoto, Y. Liu, Z. Wang, A. Molod, K. Rajendran, A. Kitoh and R. Stratton  , 2013: The Aqua Planet Experiment (APE): Response to changed meridional SST profile. J. Meteor. Soc. Japan, 91A, 57-89.

Blackburn, M., D. L. Williamson, K. Nakajima, Wataru Ohfuchi, O. Takahashi, Y.-Y. Hayashi, Hisashi Nakamura, M. Ishiwatari, J. McGregor, H. Borth, V. Wirth, H. Frank, P. Bechtold, N. P. Wedi, H. Tomita, M. Satoh, M. Zhao, I. M. Held, Max J. Suarez, Myong-In Lee, M. Watanabe, M. Kimoto, Y. Liu, Z. Wang, A. Molod, K. Rajendran, A. Kitoh and R. Stratton, 2013: The Aqua Planet Experiment (APE): CONTROL SST Simulation. J. Meteor. Soc. Japan, 91A, 17-56.

Lin, Y. L. J. Donner, J. Petch, P. Bechtold, J. Boyle, S.A. Klein, T. Komori, K. Wapler, M. Willett, X. Xie, M. Zhao, S.Xie, S. A. McFarlane, C. Schumacher, 2011: TWP-ICE global atmospheric model intercomparison: convection responsiveness and resolution impact. J. Geophys. Res., 117, D09111,doi:10.1029/2011JD017018

Dee, D. P., S. M. Uppala, A. J. Simmons, P. Berrisford, P. Poli, S. Kobayashi, U. Andrae, M. A. Balmaseda, G. Balsamo, P. Bauer, P. Bechtold, A. C. M. Beljaars, L. van de Berg, J. Bidlot, C. Delsol, R. Dragani, M. Fuentes, A. Geer, L. Haimberger, S. Healy, H. Hersbach, E. V. Hólm, L. Isaksen, P. Kållberg,M. Köhler, M. Matricardi, A. P. McNally, B. M. Monge-Sanz, J.-J. Morcrette, B.-K. Park, C. Peuby, P. de Rosnay, C.Tavolato, J.-N. Thépaut, F. Vitart, 2011 : The ERA-Interim reanalysis: Configuration and performance of the data assimilation system. Quart. J. Roy. Meteor. Soc., 137, 553-597.

#P. Brockhaus, P. Bechtold, O. Fuhrer, C. Hohenegger, D. Lüthi and C. Schär, 2011: The #role of moist convection for precipitation and climate feedbacks: An intercomparison of #different parameterization schemes in a regional climate model. Quart. J. Roy. Meteor. #Soc.

Orr, A., P. Bechtold, J. Scinoccia, M. Ern, M. Janiskova, 2010: Improved middle atmosphere climate and analysis in the ECMWF forecasting system through a non-orographic gravity wave parametrization. J. Climate., 23, 5905-5926.

Jung, T., G. Balsamo, P. Bechtold, A.C.M. Beljaars, M Köhler, M.J. Miller, J.-J. Morcrette, A. Orr, M.J. Rodwell and A.M. Tompkins, 2010: The ECMWF model climate: recent progress through improved physical parametrizations. Quart. J. Roy. Meteor. Soc., 136, 1145-1160.

Woolnough, S. J., P.N. Blossey, K.-M. Xu, P. Bechtold and many co-authors, 2010: Modeling convective processes during the suppressed phase of a Madden-Julian oscillation: Comparing single-column models with cloud-resolving models. Quart. J. Roy. Meteor. Soc., 136, 333-353.

Orr, A. and P. Bechtold, 2009 : Improvement in the capturing of short-range warm season orographic precipitation in the ECMWF model. Meteorol. Atmos. Phys., 103, DOI 10.1007/s00703-008-0288-5.

Augusti-Panareda, A., and many co-authors, 2008. Radiosonde humidity bias correction over the West African region for the special AMMA reanalysis at ECMWF. Quart. J. Roy. Meteor. Soc., 135, 595-617.

Morcrette, J. J., O. Boucher, L. Jones, D. Salmond, P. Bechtold and many co-authors, 2009 : Aerosol analysis and forecast in the ECMWF Integrated Forecasting System : Forward modelling. J. Geophys. Res (and TM 573), 114, D06206, doi:10.1029/2008JD011235.

Bechtold, P., M. Köhler, T. Jung, M. Leutbecher, M. Rodwell, F. Vitart and G. Balsamo: Advances in predicting atmospheric variability with the ECMWF model, 2008: From synoptic to decadal time-scales. Quart. J. Roy. Meteor. Soc. 134, 1337-1351.

Steinheimer, M., M. Hantel and P. Bechtold, 2008: Convection in Lorenz’s global cycle with the ECMWF model. Tellus, 60A, 1001-1022.

Willett, M. R., P. Bechtold, J. C. Petch, S. F. Milton, D. L. Williamson and S. J. Woolnough, 2008: Modelling suppressed and active convection. Comparisons between three global atmospheric models.  Quart. J. Roy. Meteor. Soc., 134, 1881-1896.

Grabowski, W. W., P. Bechtold, A. Cheng, R. Forbes, C. Halliwell, M. Khairoutdinov, S. Lang, T. Nasuno, J. Petch, W.-K. Tao, R. Wong, X. Wu and K.-K. Xu, 2006 : Daytime convective development over land : an idealized model intercomparison based on LBA observations. Quart. J. Roy. Meteor. Soc., 132, 317-344.

Chaboureau, J.-P. and P. Bechtold, 2005 : Statistical representation of clouds in a regional model, and the impact on the diurnal cycle of convection during TROCCINOX. J. Geophys. Res., 110, No D17, D1703, doi :10.1029/2004JD005645.

Yano, J.-I., J.-L. Redelsperger, P. Bechtold and F. Guichard, 2005:  Mode decomposition as a methodology for developing convective-scale representations for global models. Quart. J. Roy. Meteor. Soc., 131, 2313-2336.

Bechtold, P., J.-P. Chaboureau,  A. Beljaars, A. K. Betts, M. Köhler, M. Miller and J.-L. Redelsperger, 2004: The simulation of the diurnal cycle of convective precipitation over land in global models. Quart. J. Roy. Meteor. Soc., 130, 3119-3137.

S. H. Derbyshire, I. Beau, P. Bechtold, J.-Y. Grandpeix, J.-M. Piriou, J.-L. Redelsperger and P. M. M. Soares, 2004: Sensitivity of moist convection to environmental humidity. Quart. J. Roy. Meteor. Soc., 130, 3055-3080.

Guichard, F., J. C. Petch, J.-L. Redelsperger, P. Bechtold, J.-P. Chaboureau, S. Cheinet, W. Grabowski, H. Grenier, C. G. Jones, M. Koehler, J.-M. Piriou, R. Tailleux and M. Tomasini, 2004: Modelling the diurnal cycle of deep precipitating convection over land with CRMs and SCMs. Quart. J. Roy. Meteor. Soc., 130, 3139-3172.

 Yano, J.-I., P. Bechtold, J. L. Redelsperger, and Francoise Guichard, 2004: Wavelet-compressed representation of deep moist convection. Mon. Wea. Rev., 132, 1472-1486.

Yano, J.-I., F. Guichard, J.-P. Lafore, J.-L. Redelsperger and P. Bechtold, 2004: Estimations of mass fluxes for cumulus parameterizations from high-resolution spatial data. J. Atmos. Sci., 61, 829-842.

Gallée, H., W. Moufouma-Okia, P. Bechtold  et al., 2004 : A high resolution simulation of a West African rainy season using a regional climate model. J. Geophys. Res., 109, D05108, doi :10.1029/2003JD004020.

Yano, J.-I., P. Bechtold and J. L. Redelsperger, 2003 :  « Renormalization approach for subgrid-scale representations. J. Atmos. Sci., 60, 2029-2038.

Chaboureau, J.-P., and P. Bechtold, 2002 : A simple cloud parameterization from cloud resolving model data: Diagnostic and prognostic applications. J. Atmos. Sci., 59, 2362-2372.

Bechtold, P., E. Bazile, F. Guichard, P. Mascart and E. Richard, 2001 : A mass flux convection scheme for regional and global models. Quart. J. Roy. Meteor . Soc., 127, 869-886.