High Resolution Numerical Weather Prediction Project
Website of the ALADIN Consortium

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Just published !

Termonia, P., Fischer, C., Bazile, E., Bouyssel, F., Brožková, R., Bénard, P., Bochenek, B., Degrauwe, D., Derková, M., El Khatib, R., Hamdi, R., Mašek, J., Pottier, P., Pristov, N., Seity, Y., Smolíková, P., Španiel, O., Tudor, M., Wang, Y., Wittmann, C., and Joly, A.: The ALADIN System and its canonical model configurations AROME CY41T1 and ALARO CY40T1, Geosci. Model Dev., 11, 257-281,, 2018.

The purpose of this paper is (i) to define the ALADIN System in relation to the global counterparts IFS and ARPEGE, (ii) to explain the notion of the CMCs, (iii) to document their most recent versions, and (iv) to illustrate the process of the validation and the porting of these configurations to the operational forecast suites of the partner institutes of the ALADIN consortium.

see also ALADIN-HIRLAM : the BIG TOUR : Newsletter n°10 published on January 31st, 2018

Follow-up of the GA and GA/C :
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Regular 22nd General Assembly and 3rd joint ALADIN GA and HIRLAM Council

The ALADIN GA and the HIRLAM Council met in the Polish NMS premises in Krakow (Poland) on November 21-22, 2017 : the 22nd ALADIN GA, then the LACE Council and the HIRLAM Council in parallel, then the 3rd joint ALADIN GA - HIRLAM C meeting.

  • Besides the usual items on their agendas, the assemblies approved the Rolling Work Plan 2018 (and its completely renewed format), and committed the resources of their NMS to realised it : the HAC/PAC was asked to further discuss its scope and to follow its realisation.
  • The convergence roadmap (towards a single ALADIN/HIRLAM consortium after 2020) was debated and guidelines for the next steps were given to the PMs and the HAC/PAC.
  • Due to lack of time, the "Tour d’ALADIN" could not be presented : the slides are on-line : these 2017 highlights sent by the LTMs will be detailed in the ALADIN-HIRLAM Newsletter n°10, to be published end of January 2018.
  • The ALADIN budget for 2018 was approved, with a new position (20%F.T.E for a DA coordinator) : the position is opened.
  • A new matrix of the ALADIN consortium was approved after changes in some positions.

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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.

  • 4 full days (16-19 April) for the opening session, the thematic sessions, the posters session, some Working Group discussions, the LTM meeting, an official dinner and a public conference,
  • 20 April 2018 : HMG/CSSI meeting (whole day), for HMG/CSSI members only.

Some side meetings will also take place during that week, as well as the usual ALADIN LTM meeting.
This joint Wk/ASM obtained the label "EuroScience Open Forum 2018 - TOULOUSE, EUROPEAN CITY OF SCIENCE".

Please register before 15 February 2018.

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 21 October 2017
dernière modification le 23 October 2017
Section : Software codes
History (reverse order) of the ALADIN cycles ALADIN cycle [1] with memorandum [2]available inMajor modifications introduced in the cyclebased on ARPEGE cyclePhasing team AL46T1 spring or autumn 2018 see the plans prepared for the 23rd LTM meeting CY46T1 AL46 first quarter 2018 see the (...)
Article published on 6 November 2017
dernière modification le 17 November 2017
Section : ALADIN Local Team Managers (LTM) meetings
LTM meetingDatePlaceMinutes 25th LTM meeting 2 October 2018 Salzbourg, Austria (besides EWGLAM/SRNWP meetings) 24th LTM meeting 17 April 2018 t.b.c. Toulouse, France (besides ALADIN workshop) 23rd LTM meeting 3 October 2017 Reading, UK (besides EWGLAM/SRNWP (...)
by Eric
Article published on 14 November 2017
dernière modification le 6 February 2018
Section : Stay reports
BOUZGHAIA M.: Branchement de la routine ECRAD dans le modèle ARPEGE LANCZ D.: Testing of a modified shallow convection parametrization with AROME at 500 m horizontal resolution
Article published on 7 December 2017
Section : Manpower

Each quarter, the LTMs register the work done in their NMS by their local staff or their visitors during scientific and technical visits or training courses.

The reporting distinguishes 3 types of work : direct work potentially beneficial to all Partners, maintenance of local applications, (...)

Article published on 7 December 2017
Section : (General) Assembly of ALADIN Partners
The 2018 meetings will be held in Zagreb, back-to-back with the EUMETNET/ECOMET meeting, according to the following schedule : 19 November 2018 afternoon : ALADIN GA, 20 November 2018 morning : LACE and HIRLAM councils in parallel, 20 November 2018 afternoon : joint ALADIN-HIRLAM meeting, (...)
Article published on 12 December 2017
Section : Visitors in Toulouse
A first list of the 2018 visitors in Toulouse is given below. Please consult the offices table for phone number and office number of the 2018 visitors. NAMECOUNTRYSTARTENDSubjectMENTOR Fabrice DURUISSEAU FRANCE 04/05/15 28/02/19 SIMULATION ET ASSIMILATION DE DONNEES D’UN FUTUR SONDEUR (...)
Article published on 13 December 2017
Section : On-line registrations
Registration Form : Application Deadline: 15th February, 2018 Consult the list of participants Back to the main page of the 28th Wk & 2018 ASM
Article published on 13 December 2017
Section : On-line registrations

List of participants to the 28th ALADIN Wk & 2018 HIRLAM ASM

Back to the main page of the 28th Wk & 2018 ASM Back to the registration page

Article published on 22 December 2017
dernière modification le 23 January 2018
Section : About the aladin websites
Article published on 8 January 2018
dernière modification le 9 January 2018
Section : ALADIN People : who, where, how to contact

When planning your next visit to Toulouse/CNRM/GMAP, please pay attention to French public holidays and Meteo-France closing days (RTTi) !..

From January 1st, 2014, for security reasons, the access to GMAP offices is only allowed between 7:00 and 21:00 on working days. On Saturdays and on (...)

Article published on 9 January 2018
Section : Software and applications
Article published on 31 January 2018
dernière modification le 8 February 2018
Section : Newsletters
ALADIN-HIRLAM Newsletter : number 2
During the HMG/CSSI meeting in April 2013, ALADIN and HIRLAM consortia decided to join their effort and produce a common newsletter, twice a year. NewsletterEditoClick on the picture to download the NL N°11, due in August 2018 Please, do use the proposed templates when preparing the (...)

1st Meeting of the Expert Team on Surface Processes, Toulouse, 12 June 2009
Article published on 2 March 2009
by Patricia, JFM by

 Objective of the meeting

The 14th SRNWP meeting held in October 2007 (Dubrovnik, Croatia) proposed the creation of eight Expert Teams according to various aspects of short range numerical weather prediction in order to enhance collaborations between the five main European consortia.

Regarding the ET on “surface processes” a draft workplan was written at the beginning of 2008 providing guidelines on possible collaborations over the coming years. This draft was presented and discussed during the 15th SRNWP meeting in October 2008 (Madrid, Spain).

In order to make the collaborations more effective among us, a 1st meeting was organized in Toulouse (12 June 2009) where the participants of the ET on Surface Processes from all consortia met together.

The minutes of this working day summarize the main outcomes in terms of collaborations for the next two years.

 Presentations given during the meeting

 List of Participants

Downloads Files to download:
  • List of participants
  • File size 48 kb
  • File type : PDF
  • SRNWP presentation (JFM)
  • File size 353.5 kb
  • File type : PDF
  • ALADIN-LACE activities
  • File size 1.7 Mb
  • File type : PDF
  • COSMO activities
  • File size 1.5 Mb
  • File type : PDF
  • ECMWF activities
  • File size 2.9 Mb
  • File type : PDF
  • HIRLAM activities
  • File size 998.9 kb
  • File type : PDF
  • METOFFICE activities
  • File size 395.8 kb
  • File type : PDF
  • minutes of working day
  • File size 89.8 kb
  • File type : PDF


Informations for Toulouse visitors
Here are a few information for future or present visitors in Toulouse : (...)
operala mailing list

This list has been created in order to keep in touch (...)

Operational configurations

(updated on January 20, 2017)

Within ALADIN and HIRLAM Consortia, the (...)

Joint ALADIN-HIRLAM Newsletters
During the HMG/CSSI meeting in April 2013, ALADIN and HIRLAM consortia (...)

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