High Resolution Numerical Weather Prediction Project
Website of the ALADIN Consortium
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new ALADIN Doctor : Martina Tudor
Martina TUDOR from Croatian Met Service (new LACE PM since April 2018) successfully passed her PhD on "Improvements in the operational forecast of detrimental weather conditions in the numerical limited area model ALADIN" on December 10, 2018. Congratulations Martina...
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Assemblies of the ALADIN and HIRLAM Directors
Information on the Regular 23rd General Assembly and 4th joint ALADIN GA and HIRLAM Council that were held in Zagreb on November 19-20, 2018.

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Participants : 23rd ALADIN GA

Regular 23rd General Assembly and 4th joint ALADIN GA and HIRLAM Council, Zagreb, November 19-20, 2018

The ALADIN GA and the HIRLAM Council met in Zagreb (Croatia) on November 19-20, 2018 : the 23rd ALADIN GA, then the LACE Council and the HIRLAM Council in parallel, then the 4th joint ALADIN GA - HIRLAM C meeting.
The minutes will be prepared soon and published on this site once approved by the participants. Meanwhile, below is a short summary :

  • The 3 PMs (ALADIN, HIRLAM, LACE) reported on the realisation of the Rolling Work Plan 2018 and presented some highlights on the common and R&D activities. The assemblies congratulated the Members for the good realisation of the Rolling Work Plan 2018 and approved the Rolling Work Plan 2019 and the committed manpower.
  • The assemblies approved the "scope document" they had tasked the WG (PMs, HAC/PAC chairs, MF PAC rep., CSSI chair) with: this document proposes a scope for the future single consortium. The assemblies gave the same WG guidelines to go further toward the single convergence and prepare a draft MoU, to be discussed at the next joint meeting of the ALADIN GA and HIRLAM C.
  • The "Tour d’ALADIN" was given by Piet : the slides are on-line : these 2018 highlights sent by the LTMs will be detailed in the ALADIN-HIRLAM Newsletter n°12, to be published end of January 2019.
  • Piet reported on the 2018 common activities, DA coordinator, Code Architect and ACNA activities (a document has also been published), DA coordinator, Code Architect, ACNA, ..
  • The ALADIN budget for 2019 was approved.
  • A new matrix of the ALADIN consortium was approved after changes in some positions (the GA chairs and vice-chairs were re-elected for a two-year period).

Last events

The minutes of the PAC and the HAC/PAC meeting have be approved by email and are on-line.

The presentations and posters are on-line on the SRNWP website.

An LTM meeting was held besides the EWGLAM/SRNWP and the minutes of this 25th LTM meeting have been published.

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The joint 28th ALADIN Wk & HIRLAM ASM 2018 was held mid-April on the premises of Météo-France in Toulouse.

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28th Wk&ASM 2018 : speakers
  • 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.

The agenda, the presentations - pdf files and videos of the sessions, the posters ... are on-line, the minutes of the LTM meeting and of the HMG/CSSI meeting are also on-line.

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28th Wk&ASM 2018 : PMs at the closing session

This joint Wk/ASM obtained the label "EuroScience Open Forum 2018 - TOULOUSE, EUROPEAN CITY OF SCIENCE".

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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 25 September 2018
dernière modification le 17 December 2018
Section : DATA Assimilation Strategic Core Program

DA coordinator position.

The 22nd ALADIN General Assembly approved the creation of a 20% DA coordinator position in ALADIN to assist the ALADIN PM and the CSSI : with the coordination of the ALADIN DA starter countries with their DA activities; with the coordination of the basic kit DA core (...)

by Patricia , JAM , Eric
Article published on 5 October 2018
Section : ALADINers
DIRECTION DE LA METEOROLOGIE NATIONALE Aéroport Casa-Anfa/Casa-Oasis BP 8106 20200 CASABLANCA - MAROC GMT + 1 PhotoSURNAMEfirstnameTELEPHONETELECOPYe-mail BARI DRISS 00 212 5 22 65 48 75 00 212 5 22 91 34 35 (...)
Article published on 15 November 2018
dernière modification le 21 November 2018
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 15 November 2018
Section : Software and applications
Vertical levels used in operational systems and their standard atmosphere heights

(updated on November 15, 2018)

Within ALADIN and HIRLAM Consortia, the 3 CMCs (ALARO, AROME, HARMONIE-AROME) and the ALADIN configuration run operationally on a wide range of computers, from single workstations to vectorial computers in shared or distributed memory, and on a cluster of (...)

Article published on 22 November 2018
Section : About the aladin websites
Information on the Regular 23rd General Assembly and 4th joint ALADIN GA and HIRLAM Council that were held in Zagreb on November 19-20, 2018.
Article published on 29 November 2018
Section : On-line registrations
Registration Form : Application Deadline: 15th February, 2019 Consult the list of participants Back to the main page of the 29th Wk & 2019 ASM
Article published on 3 December 2018
Section : ALADIN annual workshops (joint with HIRLAM ASM from 2007)

AEMET has kindly offered to host the joint 29th ALADIN Wk & HIRLAM ASM 2019 in Madrid. It will be organised on 1-4 April 2018 (Wk&ASM) and on 5 April (HMG/CSSI meeting).

The Main meeting will take place at the Headquaters of the Ministry for Ecological Transition in Nuevos Ministerios (...)

Article published on 4 December 2018
Section : (General) Assembly of ALADIN Partners

At the 4th joint ALADIN General Assembly and HIRLAM Council meeting, on the kind invitation of the Director of the TSMS, the assemblies decide to meet in Istanbul, according to the following schedule :

• 16 December 2019 afternoon : ALADIN GA,

• 17 December 2019 morning : LACE and HIRLAM (...)

Article published on 16 December 2018
dernière modification le 17 December 2018
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 (...)
Article published on 17 December 2018
Section : DATA Assimilation Strategic Core Program

5-6 December 2018 video-conference

See the summary report; the main topics of this video-conference were: 1. Status on the DAsKIT countries progress. 2. Status on the 2018 DAsKIT WD exercises 3. Validation of local surfDA cycling 4. Local issues 5. Planing of next actions and AOB4 June 2018 (...)

Article published on 10 January 2019
Section : Visitors in Toulouse
A first list of the 2019 visitors in Toulouse is given below. Please consult the offices table for phone number and office number of the 2019 visitors. NAMECOUNTRYSTARTENDSubjectMENTOR DURUISSEAU Fabrice FRANCE 04/05/15 28/02/19 SIMULATION ET ASSIMILATION DE DONNEES D’UN FUTUR SONDEUR (...)

History of the governance : 1991-2016
Article published on 21 July 2008
by Patricia by

The organisation of the ALADIN project changes according to the evolution of the project (see also the history of the project).

 1991 - 1995 : gestation

  • From September 1991 until end of 1995, the work on ALADIN centered around visits to Toulouse of scientists of all partners, their ALADIN-related work at home being mostly conditioned by the tasks they had been performing in Toulouse. The number of hours of work shared in Toulouse with colleagues of all origins allowed a homogeneous and united team to be formed.
  • The main difficulty of the set-up was the financing of the travel and visits. Generally speaking, travel was provided by the partners and the grants for the stays were funded by Météo-France or by French ministries or raised in competitive applications by either all partners or by Météo-France and one partner for bilateral support or directly financed by partners.

 1996 - 2001 : decentralization and formalization through the 1st MoU

  • With the transition to multiple operational status thanks to a "standard open" code, the situation changed. The manpower involved in the development of ALADIN has kept increasing and covers now not only centralized actions of research and source code maintenance in Toulouse but also deported work in NMS, related to the implementation of local versions of ALADIN, the exploitation of the model outputs, the verification of forecasts and local research developments.
  • The necessary formalization of the project before its decentralization was completed by the signing of a first Memorandum of Understanding by all partners. It layed down he principles observed by ALADIN since the beginning, the choice of software, conditions of its use by the partners and of membership of, admission to, and withdrawal from the ALADIN "club".
  • The 10-years ALADIN anniversary was celebrated in Paris on May 31st, 2001 and a booklet was printed.

 2001 - 2005 : 2nd MoU with enlarged definition of the ALADIN partnership, guidelines for the commercial use, creation of a Technical Cooperation Standing Committee

  • A second ALADIN Memorandum of Understanding was signed on May 31st 2001 with mainly:
    • an enlarged definition of the ALADIN partnership, with three levels of "rights versus duties" : Full Member, Associated Member, User;
    • more precise guidelines for the commercial use of ALADIN products;
    • stricter rules for the registration of the manpower dedicated to ALADIN;
    • creation of a Technical Cooperation Standing Committee (TCSC) of for members (Météo-France, a LACE representative, a SELAM representative, a representative of the other partners), in charge of the routine project coordination. This TCSC was replaced by a 6 permanent members working group "Science and Strategy Committee" during the Assembly in Casablanca (2002) : the purpose of this old SSI was to supervise priorities and co-operation with other SRNWP groups, to follow AROME project and to report to the Assembly on progress of the scientific plan.

 end of 2005 : the 3rd MoU defines the new organisation

  • the governance and the management are adapted: General Assembly (with its Chairperson and Vice-Chairperson), Program Manager, Policy Advisory Committee, ALADIN Local Teams Managers, Program Team, Committee for Scientific and System/maintenance Issues, System/maintenance and Scientific Coordinators, Support Team
  • the MoU defines more precisely the relationships between governing bodies with a proposed way of circulating information, request and decision between GA, PAC, PM and Directors on one hand, in consistency with HIRLAM and with ECMWF

 end of 2010 : the 4th MoU defines the organisation for 2011-2015

  • The evolution of the content from MoU3 is mainly a better balancing within the management entities (LTMs more active in planning and reporting, CSSI more involved in applications) and the harmonisation with HIRLAM, including the possibility to temporarily and jointly active “task-forces”.

 beginning of 2016 : the 5th MoU defines the current organisation

The differences from the 4th MoU concern :

  • the introduction of the notion of Canonical Model Configurations (i.e. AROME or ALARO)
  • the new half-time ALADIN funded position for a Code Architect
  • the increase of the flat-rate ceiling to take into account the CA funded position
  • some changes in the article 11 about "Ownership, avalability and use of ALADIN products". the ALADIN-HIRLAM cooperation agreement was removed from the MoU text and remains as a stand alone document that is to be renewed and signed with HIRLAM consortium.


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 November 15, 2018)

Within ALADIN and HIRLAM Consortia, the 3 (...)

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

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at random

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