ALADIN
High Resolution Numerical Weather Prediction Project
Website of the ALADIN Consortium

  After the 13rd PAC meeting and the 4th joint HAC/PAC meetings, Brussels, May 23


 After the Joint ALADIN/HIRLAM strategy meeting,Toulouse, April 26-28


 After the 26th ALADIN Wk & HIRLAM 2016 ASM

  • ALADIN 25th anniversary was celebrated during the icebreaker.






 Soon to come

The concept of the ALADIN project was proposed by Météo-France in 1990, with the aim of building a mutually beneficial collaboration with the National Meteorological Services of Central and Eastern Europe. This collaboration was to be in the field of Numerical Weather Prediction (NWP), which provides the basis for the forecasting tools of modern meteorology. The easy to translate acronym (Aire Limitée Adaptation dynamique Développement InterNational) clearly indicates the major axes of this project at its beginnings.

25 years later, as defined in the 5th Memorandum of Understanding,

The goal of the ALADIN Collaboration is to improve the value of the meteorological, hydrological and environmental warning and forecast services delivered by all Members to their users, through the operational implementation of a NWP system capable of resolving horizontal scales from the meso-beta to the meso-gamma scale and improving the prediction of severe weather phenomena such as heavy precipitation, intensive convection and strong winds.

This objective will be fulfilled through continuation and expansion of the activities of the ALADIN Consortium in the field of High Resolution Short Range Weather Forecast, including:

  • Maintenance of an ALADIN System (...);
  • Joint research and development activities, on the basis of the common Strategic Plan and related Work Plans, with the aim of maintaining the ALADIN System at scientific and technical state of the art level within the NWP community;
  • Sharing scientific results, numerical codes, operational environments, related expertise and know-how, as necessary for all ALADIN Consortium members to conduct operational and research activities with the same tools.

About one hundred scientists, from sixteen countries, each with its own specificity in resources and knowledge base, are permanently contributing to the progress of ALADIN NWP system. They are working together on a modern code of the atmosphere that definitely deserves its proper place between the European state-of-the-art NWP models: 80 Full-Time Equivalent persons in the last years of the project’s life. This code is now operated every day in fifteen Euro-Mediterranean countries, on a huge variety of computing platforms ranging from a PC Cluster under Linux to Vector Computers.

ALADIN consortium had a number of unique successes in the past : for instance, the plugging of an existing physics parameterization in the existing code, leading to the AROME model; ALADIN is at the forefront of the gray-zone problematics with the ALARO physics; ALADIN dynamical core is remarkably stable; ...

ALADIN also allowed to build a high-level scientific team, distributed in sixteen countries that managed to reach the level of the best research centres, as witnessed by the PhD theses and publications in international journals. The General Assembly of Partners, the workshops, the meetings, the newsletters regularly offer opportunity of various exchanges within the ALADIN community.

ALADIN is preparing for the serious evolutions expected within the NWP landscape in the coming five to ten years. There is the ever-lasting question where to draw the line between resolved vs. parameterized processes. There is the question of the efficiency and the scalability of ALADIN dynamical core. There are the external drivers, such as the demands of the end users, and the evolution of the high-performance computing machines. Additionally a serious reorganization of the code is now at hand, in particular within the OOPS project. Besides that, the international meteorological context is steadily changing, specifically with the merger of the ALADIN and the HIRLAM consortia.

Article published on 4 April 2016
dernière modification le 18 August 2016
Section : ALADIN annual workshops (joint with HIRLAM ASM from 2007)
26<sup class=th WK & ASM 2016: participants at the opening session" title="26th WK & ASM 2016: participants at the opening session" />
The Instituto Português do Mar e da Atmosfera (Portugal) hosted the joint 26th ALADIN Wk & HIRLAM 2016 ASM. The major meeting was held at the hotel TRYP Lisboa Aeroporto which is located on IPMA headquarters neighborhood. Agenda and participantsPresentations : documents and records The .pdf (...)
Article published on 4 April 2016
dernière modification le 5 August 2016
Section : About the aladin websites

After the 13rd PAC meeting and the 4th joint HAC/PAC meetings, Brussels, May 23After the Joint ALADIN/HIRLAM strategy meeting,Toulouse, April 26-28After the 26th ALADIN Wk & HIRLAM 2016 ASM

The Instituto Português do Mar e da Atmosfera (Portugal) hosted the joint 26th ALADIN Wk & (...)

Article published on 19 April 2016
Section : ALADIN annual workshops (joint with HIRLAM ASM from 2007)

The joint 27th ALADIN Wk & HIRLAM ASM 2017 will be held on the premises of the Finnish Meteorological Institute in Helsinki (see How to find FMI during the first week of April 2017 : 3-6 April :joint Wk& ASM, 7 April : HMG/CSSI meeting.

Some side meetings will also take place during (...)

Article published on 19 April 2016
dernière modification le 24 May 2016
Section : Scientific Management Meetings

A joint ALADIN/HIRLAM strategy meeting was held in Toulouse on April 26-28, 2016 from noon to noon. Scope and objectives of the workshop

The Aladin and Hirlam cooperation on limited area mesoscale weather forecasting de facto involves 26 countries now. The systems are growing in (...)

Article published on 25 April 2016
dernière modification le 26 April 2016
Section : Scientific Management Meetings

The ALADIN Committee for Scientific and System/maintenance Issues (CSSI) and Support Team (ST) members meet at least once a year.

A coordination meeting with HIRLAM Management Group (MG) takes place in spring besides the annual joined ALADIN workshop & HIRLAM All Staff Meeting; another (...)

Article published on 9 May 2016
Section : History
During the icebreaker at the joint 26th ALADIN Wk & HIRLAM ASM 2016 in Lisbon (4-7 April 2016), the ALADIN 25th Anniversary was celebrated. Piet recalled some main steps and achievements of the ALADIN consortium throughout all these years and insisted of the ALADIN spirit that lead so many (...)
by JAM , Eric
Article published on 3 June 2016
Section : Stay reports
ZSEBEHAZI G.: SENSITIVITY STUDY FOR SZEGED, HUNGARY USING THE SURFEX/TEB SCHEME COUPLED TO ALAROBENAMARA M.: Premier essai d’Optimisation du code srtm (courte longueur d’onde) dans ARPEGE dans le cycle 41t1_op1Khalfaoui W.: Évaluation des modifications sur la Microphysique de AROMEBochenek B.: (...)
Article published on 9 June 2016
Section : ALADIN annual workshops (joint with HIRLAM ASM from 2007)

The joint 28th ALADIN Wk & HIRLAM ASM 2018 will be held on the premises of Météo-France in Toulouse during the third week of April 2018 :

16-19 April :joint Wk& ASM,

20 April : HMG/CSSI meeting.

Some side meetings will also take place during that week, as well as the usual (...)

Article published on 16 June 2016
Section : (General) Assembly of ALADIN Partners
The National Met Services of the ALADIN, HIRLAM and LACE consortia will take the opportunity of many of their Directors gathering in Darmstadt for the EUMETSAT Council next December to organise the general assembly and councils : the LACE Council on December 7 afternoon the HIRLAM Council (...)
by Eric
Article published on 17 June 2016
Section : Stay reports
SATOURI A.: Phasing report COOPMANN O. Amélioration des analyses météorologiques par l’assimilation de mesures infrarouges satellitaires sensibles à l’ozone (M2)
Article published on 31 July 2016
dernière modification le 1 August 2016
Section : Policy Advisory Committee (PAC) and "Bureau" meetings
Group photo of the 1<sup class=st Joint HAC/PAC" title="Group photo of the 1st Joint HAC/PAC" />
Since the 3rd MoU (November 2005), the governance of the ALADIN project is under the responsability of the General Assembly (GA) who designs the Policy Advisory Committee (PAC). The PAC meets before each GA [1] : the Minutes of the PAC meeting are one of the preparatory documents of the GA. See (...)
Article published on 9 August 2016
dernière modification le 10 August 2016
Section : PhD thesis
J-P Chaboureau, C. Fischer, M. Mokhtari and B. Hamadache (from right to left); P. Tulet (behind)
PhD Thesis completed in the framework of the ALADIN project (excepted those on RFR or ALATNET supports) Name Title of the thesis Date of defense University Vanja BLAZICA Divergence in limited area models for numerical weather prediction 27 September 2013, Ljubljana (Slovenia) Ljubljana (...)








References and bibliography
Article published on 3 July 2009
by JFM by

  • ALADIN
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    • Cedilnik, J., D. Carrer, J.-L. Roujean, and J.-F. Mahfouf (2009): Analysis of satellite derived surface albedo for Numerical Weather Prediction. J. Appl. Meterolo. Clim. (in preparation)
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    • Giard, D., and E. Bazile (2000) : Implementation of a new assimilation scheme for soil and surface variables in a global NWP model. Mon. Wea. Rev., 128, 997-1015
    • Lebeaupin-Brossier, C., V. Ducrocq, and H. Giordani (2009): High-resolution air-sea coupled modelling applied to Mediterranean heavy rainy events. Quart. J. Roy. Meteor. Soc. (to appear)
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    • Masson, V. (2000) : A physically-based scheme for the urban energy budget in atmospheric models. Bound. Layer Meteorol., 94, 357-397
    • Masson, V., J.-L. Champeaux, F. Chauvin, C. Meriguet, and R. Lacaze (2003) : A global database of land surface parameters at 1-km resolution for meteorological and climate models. J. Climate, 16, 1261-1282
    • Masson, V. ,and Y. Seity (2009) : Including atmospheric layers in vegetation and urban off-line surface schemes. J. Applied Meteorol. Clim. (in press)
    • Mironov, D. , 2008: Parameterization of lakes in numerical weather prediction. Description of a lake model. COSMO Technical Report, No. 11, Deutscher Wetterdienst, Offenbach am Main, Germany.
    • Noilhan J. and S. Planton (1989) : A simple parameterization of land surface processes for meteorological models. Mon. Wea. Rev., 117, 536-549
    • Noilhan J., and J.-F. Mahfouf (1996) : The ISBA land surface paramterization scheme. Global Planet. Change, 13, 145-159
    • Sellers, PJ. and collaborators (1996) : The ISLSCP initiative I global datasets: surface boundary conditions and atmospheric forcings for land-atmospheric studies. Bulletin of the American Meteorological Society, 77, 1987-2005
    • Webb, R.S., C.E. Rosenzweig, and E.R. Levine (1991) : A global dataset for soil particle size properties. Tech. Rep. 4286, NASA, GISS, New-York, 34 pp.
    • Wilson, M.F. and A. Henderson-Sellers (1985) : Cover and soil datasets for use in general circulation models. Journal of Climatology, 20, 119-143
  • COSMO
    • Ament, F. and Simmer, C., 2006: Improved Representation of Land-Surface Heterogeneity in a Non-Hydrostatic Numerical Weather Prediction Model, Boundary-Layer Meteorology, 121, 153-174
    • Heise E., Schrodin R. Aspects of snow and soil modelling in the operational short range weather prediction models of the German weather service // Computational technologies. 2002. V. 7. Special issue. P. 121-140
    • Martilli, A., Clappier, A., Rotach, M. W.: 2002, ’An urban surfaces exchange parameterisation for mesoscale models’, Bound.-Layer Meteor., 104, 261-304.
    • Mironov D. and Matthias Raschendorfer (2001): Evaluation of Empirical Parameters of the New LM Surface-Layer Parameterization. Scheme. COSMO Technical Report, No. 1, Deutscher Wetterdienst, Offenbach am Main, Germany
    • Mironov, D., and B. Ritter, 2003: A first version of the ice model for the global NWP system GME of the German Weather Service. Research Activities in Atmospheric and Oceanic Modelling, J. Cote, Ed., Report No. 33, April 2003, WMO/TD, 4.13-4.14.
    • Mironov, D. , 2008: Parameterization of lakes in numerical weather prediction. Description of a lake model. COSMO Technical Report, No. 11, Deutscher Wetterdienst, Offenbach am Main, Germany.
    • Raschendorfer, M. (1999): The new turbulence parameterization of LM, Quarterly Report of the. Operational NWP-Models of the DWD, No 19, 3-12, May 1999
    • Schraff, C. and R. Hess (2002): Datenassimilation für das LM, Promet Jahrgang 27, Heft 3/4, p 156-163.
    • Schraff, C. and R. Hess (2003): A Description of the Nonhydrostatic Regional Model LM Part III : Data Assimilation. Available from DWD.
    • Vogel, H., Pauling, A., Vogel, B. (2008), Numerical simulation of birch pollen dispersion with an operational weather forecast system, Int J Biometeorol. 2008 Nov;52(8):805-814, doi:10.1007/s00484-008-0174-3.
    • Wergen, W. and M. Buchhold (2002): Datenassimilation für das Globalmodell GME, Promet Jahrgang 27, Heft 3/4, p 149-155.
  • HIRLAM
    • Noilhan J. and S. Planton (1989) : A simple parameterization of land surface processes for meteorological models. Mon. Wea. Rev., 117, 536-549
    • Peters-Lidard, C.D, Blackburn, E., Liang, X., Wood, E.F. (1998): The effect of soil thermal conductivity parameterization on surface energy fluxws and temperature. Journal of Atm. Sci., vol. 55 , nr 7, 1209-1224
    • Samuelsson, P., Gollvik, S., Ullerstig, A. (2006): The land-surface scheme of the Rossby Centre regional atmospheric climate model (RCA3). SMHI, Meteorologi 122,25 pp. Available at: SMHI, 601 76 Norrköping, Sweden
    • Sellers, PJ. and collaborators (1996) : The ISLSCP initiative I global datasets: surface boundary conditions and atmospheric forcings for land-atmospheric studies. Bulletin of the American Meteorological Society, 77, 1987-2005
    • Wilson, M.F. and A. Henderson-Sellers (1985) : Cover and soil datasets for use in general circulation models. Journal of Climatology, 20, 119-143
    • Viterbo, P., Beljaars, A., Teixeira, J., (1999): The representation of soil moisture freezing and its impact on the stable boundary layer. Quart. J. Roy. Met. Soc. 125, 2401-2426
  • UM/JULES
    • [1] Wilson, M. F. and A. Henderson-Sellers, 1985. A global archive of land cover and soils data for use in general circulation models. Journal of Climatology 5: 119-143.
    • [2] Global Soil Data Task Group, 2000. Global gridded surfaces of selected soil characteristics (IGBP-DIS). Data set. available on-line from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. doi:10.3334/ORNLDAAC/569.
    • [3] FAO/IIASA/ISRIC/ISS-CAS/JRC, 2008. Harmonised world soil database (version 1.0). FAO, Rome, Italy and IIASA, Laxenburg, Austria.
    • [4] Miller D. A. and R. A. White, 1998. A conterminous United States multilayer soil characteristics dataset for regional climate and hydrology modelling. Earth interactions 2: paper no 2, 1-26.
    • [5] Best, M. J. and P. E. Maisey, 2002. A physically based soil moisture nudging scheme. Hadley centre technical note 35.
    • [6] Smith R. N. B., E. M. Blyth, J. W. Finch, S. Goodchild, R. L. Hall and S. Madry, 2006. Soil state and surface hydrology diagnosis based on MOSES in the Met Office Nimrod nowcasting system. Meteorol. Appl. 13, 89-109.
    • [7] Stark, J. D., C. J. Donlon, M. Martin and M. McCulloch, 2007, OSTIA: An operational, high resolution, real time, global sea surface temperature analysis system, in Proc. Oceans ‘O7, Aberdeen, Scotland, 18-21st June 2007.
    • [8] GLOBE Task Team and others (Hastings, David A., Paula K. Dunbar, Gerald M. Elphingstone, Mark Bootz, Hiroshi Murakami, Hiroshi Maruyama, Hiroshi Masaharu, Peter Holland, John Payne, Nevin A. Bryant, Thomas L. Logan, J.-P. Muller, Gunter Schreier, and John S. MacDonald), eds., 1999. The Global Land One-kilometer Base Elevation (GLOBE) Digital Elevation Model, Version 1.0. National Oceanic and Atmospheric Administration, National Geophysical Data Center, 325 Broadway, Boulder, Colorado 80303, U.S.A. Digital data base on the World Wide Web (URL: http://www.ngdc.noaa.gov/mgg/topo/globe.html) and CD-ROMs.
    • [12] Implementation of a Northern Hemisphere snow analysis in the global model S Pullen, C Jones and G Rooney. Met R&D Technical Report 526
    • [13] R. L. H. Essery, M. J. Best, R. A. Betts, P. M. Cox, C. M. Taylor, 2003, Explicit Representation of Subgrid Heterogeneity in a GCM Land Surface Scheme, Journal of Hydrometeorology 4(3) 530–543
    • [14] Best et al, 2004 : A proposed structure for coupling tiled surfaces with the planetary boundary layer, J. of Hydrometeor.,5, 1271-1278
    • [15] Mironov, D. V., 2008: Parameterization of lakes in numerical weather prediction. Description of a lake model. COSMO Technical Report, No. 11, Deutscher Wetterdienst, Offenbach am Main, Germany, 41 pp.
    • [16] Best, MJ, 2005, Representing urban areas within operational numerical weather prediction models, Boundary-layer Meteorology 114, 91-109
  • ECMWF
    • Balsamo G., P. Viterbo, A. Beljaars, B. van den Hurk, M. Hirschi, A. K. Betts, K. Scipal: A revised hydrology for the ECMWF model: Verification from field site to terrestrial water storage and impact in the Integrated Forecast System, Journal of hydrometeorology, in press 2009. Also ECMWF Tech. Memo number 563, 2008.
    • Beljaars A.C.M.: The parametrization of surface fluxes in large scale models under free convection, ECMWF Tech. Memo number 215, 1995.
    • Beljaars, A. C. M., A. R. Brown, and N. Wood, 2004: A new parameterization of turbulent orographic from drag: Q. J. R. Meteorol. Soc., 130, 1327–1347, 2004.
    • Best, M.J., A. Beljaars, J. Polcher, and P. Viterbo: A Proposed Structure for Coupling Tiled Surfaces with the Planetary Boundary Layer. J. Hydrometeor., 5, 1271–1278, 2004.
    • Douville, H., J. F. Royer, and J. F. Mahfouf: A New Snow Parameterization for the Meteo-France Climate Model .1. Validation in Stand-Alone Experiments. Climate Dynamics, 12, 21-35, 1995.
    • Dutra E., The strength of Land-Atmosphere feedbacks and implications for global change, PhD interim report (endutra@gmail.com), 2008.
    • Drusch M., T. Holmes, P. de Rosnay, G. Balsamo, “Comparing ERA-40 based L-band brightness temperatures with Skylab observations: a calibration/validation study using the Community Microwave Emission Model”, Journal of Hydrometeorology, Vol 10, pp213-225, DOI: 10.1175/2008JHM964.1, 2009
    • Drusch, M., D. Vasiljevic and P. Viterbo, « ECMWF’s global snow analysis: Assessment and revision based on satellite observations. », ECMWF Tech. Memo number 443, 2004
    • Hersbach H., Adaption of the CY35R1 operational SST and sea-ice analysis over the Great Lakes and the poles, ECMWF Research memo number R60.9/HH/08109, 2008.
    • Jarlan, L., G. Balsamo, S. Lafont, A. Beljaars, J. C. Calvet, and E. Mougin: Analysis of leaf area index in the ECMWF land surface model and impact on latent heat and carbon fluxes: Application to West Africa, J. Geophys. Res., 113, D24117, doi:10.1029/2007JD009370, 2008.
    • Loveland, T. R., B. C. Reed, J. F. Brown, D. O. Ohlen, Z. Zhu, L. Youing, and J. W. Merchant: Development of a global land cover characteristics database and IGBP DISCover from the 1km AVHRR data. Int. J. Remote Sensing, 21, 1303–1330, 2000.
    • Mahfouf J.-F., P. Viterbo, H. Douville, A. Beljaars and S. Saarinen: A Revised land-surface analysis scheme in the Integrated Forecasting System, ECMWF Newsletter, Summer-Autumn, 2000.
    • Mironov, D. V.: Parameterization of lakes in numerical weather prediction. Description of a lake model. COSMO Technical Report, No. 11, Deutscher Wetterdienst, Offenbach am Main, Germany, 41 pp., 2008.
    • Van den Hurk, B.J.J.M. and Viterbo, P. and Beljaars, A.C.M. and Betts, A.K: Offline validation of the ERA40 surface scheme, ECMWF Tech. Memo. number 295, 2000.
    • Viterbo, P. and A. C. M. Beljaars: An improved land surface parametrization scheme in the ECMWF model and its validation. J. Climate, 8, 2716–2748, 1995.
    • Viterbo, P., A. C. M. Beljaars, J.-F. Mahfouf, and J. Teixeira: The representation of soil moisture freezing and its impact on the stable boundary layer. Q. J. R. Meteorol. Soc., 125, 2401–2426, 1999.

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