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

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.

20 years later, as defined in the 4th 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 pluging 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.

Section : Governance
Date GA Chairperson election [1] GA Vice-chairperson election [2] PAC Chairperson appointment [3] PAC Vice-chairperson appointment [4] PM appointment CSSI chairperson election MoU signature AG20- 2015 ?? ?? MoU5 ?? AG19- 2014 ?? ?? AG18-Nov 2013 Abdalah Mokssit Martin Benko (...)
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Section : (General) Assembly of ALADIN Partners

Table of contents General Assemblies of ALADIN Assemblies of ALADIN Partners General Assemblies of ALADIN Partners

Since the 3rd MoU (November 2005), the governance of the ALADIN project is under the responsibility of the General Assembly. (...)


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Section : Scientific plans and reports
As decided by the 16th General Assembly in November 2011, a common HIRLAM-ALADIN plan will span the period of the two MoUs of the two consortia, i.e. until 2015. It will be a "rolling plan", “rolling” meaning that this plan will be adapted in the course of the coming years; depending on the (...)
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Section : ALADIN People : who, where, how to contact
Here are a few information for future or present visitors in Toulouse : Useful links : Public transport : Schedules of the Toulouse buses About Toulouse (official page of "Mairie de Toulouse") How to reach Météo-France http://www.meteo.fr/cic/meetings/venue.html Computer resources : for computer (...)
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Section : Governance

Table of contents Breakdown of the manpower (...) Manpower evolution of Partners Mobility and Full Time (...) Type of work at the end (...) Statistics on phasing and (...)

Statistics about the manpower involved in ALADIN are regularly produced thanks to the (...)


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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 (...)


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Section : ALADIN People : who, where, how to contact

For a personal connection to PARME or a team access to IAA (BDPE, BDAP, BDM or BDCLIM), please fill the request form (French version or English version).

In case of a new request, please fill also one of the undertaking forms (French version or English version).

For PARME access, the (...)


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Section : OOPS
OOPS Steering Committee : June 3, 2014 in Toulouse Technical video-conference : feedback about applying the Python to the model code, and tests of performances : February 20, 2014 Technical video-conference : meeting number 5 towards CY41 : January 27, 2014 OOPS Steering Committee : November (...)
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by JAM
Section : Stay reports
Sassi Z.: Latest study in ARPEGE/IFSCastelein A., C. Voirin, M. Porte: Evaluation des prévisions de pluie du prototype AROME Outre-Mer.Blot C., G. Coquelet, J. Leger: Modélisation de la couche limite neutre aux résolutions hectomètriques.Riggi-Carrolo E., O. Gulilet, S. Qasmi: Etude de (...)
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Section : Workshops and Scientific Management Meetings
The ALADIN Committee for Scientific and System/maintenance Issues (CSSI) and Support Team (ST) members meet twice 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 meeting (...)
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Section : ALADIN annual workshops (joint with HIRLAM ASM from 2007)
WK24: Participants

Table of contents Practical information on (...) Agenda and list of participant On-line presentations of (...) Posters HMG/CSSI meeting On-line registration for (...) List of registered participant

The National Meteorological Administration of Romania will host (...)


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Section : (General) Assembly of ALADIN Partners
GA18 : Participants

Table of contents Draft Minutes of the 18th (...) Participants of the 18th (...) Agenda with on-line presentati GA18 : Participants

The NMS of Tunisia hosted the 18th regular General Assembly in Tunis, on 14-15 November 2013. Draft Minutes of the 18th (...)


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The ALADIN Project within the European collaborations in Numerical Forecast
Article published on 12 January 2011
by Patricia

  • ALADIN is a consortium of the European SRNWP Network
    JPEG - 326.7 kb
    SRNWP Consortia in Europe
  • Informations about the other consortia could be found on SRNWP webpages or on the websites of each consortium :
    • COSMO,
    • UKMO,
    • HIRLAM : ALADIN had a research cooperation with HIRLAM for years; an enhanced cooperation started in 2004 and a Cooperation Agreement between the ALADIN consortium and the HIRLAM consortium was first signed on December 6, 2005 and renewed on December 1st, 2010: the respective strengths and weaknesses of both consortia complement each other well and, in the recent years, in the so-called "HARMONIE" ( Hirlam Aladin Research on Meso-scale Operational NWP in Euromed) dynamics, ALADIN and HIRLAM have collaborated more and more closely, giving a new impulse to the European structuring of NWP activities.
    • LACE : ALADIN has strong links with LACE, LACE being a grouping of ALADIN members, using aladin software : first operational ALADIN-LACE model was run in Toulouse where the LACE management group was hosted (1994); in 1998, the LACE operations were transfered to Prague Regional Center; from 2003, each RC LACE Member is responsible for its own operational NWP system, but scientific research and development is co-ordinated within the LACE project.
  • ALADIN is linked to ECMWF through the software protection agreement between ECMWF and Meteo-France signed on 19/02/1999.

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