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

Monday 30th of March : beginning of the 30th ALADIN WK & HIRLAM ASM 2020

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  • Please try to join with : https://bluejeans.com/691995373 or Bluejeans app. Meeting ID: 691995373
  • REGISTRATION : Monday 30 at 08:30 CEST (UTC+2), meeting begins at 09:00
    • Make sure that you are registered on the shared WK2020 document
    • You are welcome to use your camera, microphone and the chat as long as the session doesn’t start but at the beginning of the session, all microphones and cameras are switched off and the chat is to be used to ask questions to the speaker through the chair who will take care of the chat
  • SESSIONS
    • Switch off all cameras and microphones
    • The chair opens his camera and microphone
    • The chair invites the speakers of the session to open their camera and microphone
    • Group photo of the speakers and chair
    • All speakers switch off their camera and microphone
      • The first speaker takes the floor
      • opens his camera and microphone, and after a few words
      • the recording begins (you hear the announcement)
      • the speaker and the chair switch off their camera when the presentation is shared on the screen by the speaker (or Patricia)
      • at the end of the presentation, the speaker and the chair switch on their camera and the chair takes care of the questions asked by the participants in the chat
      • the recording stops
    • The chair invites the next speaker to take the floor


Day in honour of Jean-François Geleyn

Presentations on various aspects of Jean-François’s successful research activities with a pioneering inspiration were given by scientists who have collaborated with him, and also by those who have been trained and supervised by him. The videos, presentations and photos of the day are on-line, together with a nice souvenirs and testimonies slide show.

Strategy Meeting : 3-5 February

This meeting was intented to establish a common set of strategic objectives for the future ALADIN-LACE-HIRLAM consortium. After the presentation and discussions with the experts and the current management of ALADIN, HIRLAM and LACE consortia, the Convergence Woking Group worked on preparing a Strategy document, to be proposed to the Assemblies of Directors at their next meetings in June.


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29 Jan. 2020 : the ALADIN-HIRLAM Newsletter n°14 is published

Embark on a great journey among the major achievements of the 26 ALADIN&HIRLAM partners over 2019



24th ALADIN GA and 5th joint ALADIN GA & HIRLAM Council, Istanbul, 16-17 December 2019

On the kind invitation of M. Volkan Mutlu Coşkun, Director General of Turkish State Meteorological Service, the ALADIN and HIRLAM Assemblies of Directors met In Istanbul, Turkey.
The main point at the agenda of these meetings was the Convergence : the Assemblies discussed the draft MoU of the future single Consortium and the pending issues (long-term goals, organisation and management positions, voting rules and voting rights, budget, roadmap, ...). The Minutes of the meetings have been approved : Minutes of the 24th GA, minutes of the 5th joint Assemblies.


HAC, PAC and joint PAC-HAC meetings, November 4-5, Toulouse

The agendas of these meetings were mainly focused on the ALADIN-HIRLAM convergence process and the documents prepared by the Convergence WG were scrutinized : draft MoU and convergence roadmap, proposal for a status of associated members, strategy and strategy meeting, management, organisational bodies and positions, quality assurance, financial scenarios, ... The PAC-HAC was also presented with the agendas of the next Directors meetings, the realisation of the Rolling Work Plan 2019 at mid-year and the proposed RWP2020.
The minutes of these meetings are on-line : the main PAC-HAC recommendations (on the future ALADIN-HIRLAM MoU draft text) have already been implemented by the Convergence WG and the documents amended accordingly to PAC-HAC discussions and distributed to the ALADIN & HIRLAM Directors for their meeting in Istanbul, December 16-17.

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.