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 : ALADIN Local Team Managers (LTM) meetings
LTM meetingDatePlaceMinutes 18th LTM meeting 14 April 2015 Copenhagen, Danemark (besides ALADIN workshop) 17th LTM meeting 30 September 2014 Offenbach, Germany (besides EWGLAM/SRNWP meetings) 16th LTM meeting 7 April 2014 Bucarest, Romania (besides ALADIN workshop) minutes 15th LTM (...)
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Section : Internal documentation

"Bull users getting started" note

May 2014, Alexandre Mary completed the "Bull users getting started" note (in the tar file, you will find the note and the associated templates). Overall absolutely high priority recommendation is to run jobs on the 32Gb nodes, not the bigger ones (that are (...)

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Section : (General) Assembly 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.

In 2014, for the first time, a joint ALADIN General Assembly and HIRLAM Council meeting will be hold (on December 2 afternoon, (...)

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Section : (General) Assembly of ALADIN Partners

For the first time, the ALADIN General Assembly and the HIRLAM Council will held a joint meeting.

Taking advantage of the opportunity of many of their Directors gathering in Reading for the ECMWF Council next December 3 – 4, 2014, ALADIN and HIRLAM consortia will organise some internal (...)

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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 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 (...)

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Section : Governance
The governance and the management of the ALADIN Consortium is defined by the 4th MoU and by the 18th General Assembly in 2013 (see also history of chair persons) : General Assembly Chairperson : Abdalah Mokssit (Ma), elected in November 2013 Vice-Chairperson : Martin Benko (Sk), elected in (...)
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Section : Policy Advisory Committee (PAC) and "Bureau" meetings
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 [4] : the Minutes of the PAC meeting are one of the preparatory documents of the GA. See (...)
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Section : Documentation on cycles and coordination meetings
memorandum of Common cycle 41, July 2014 memorandum of IFS cycle 40R3, July 2014 memorandum of ARPEGE cycle 40T1, April 2014 memorandum of IFS cycle 40R2, March 2014 memorandum of IFS cycle 40R1, August 2013 memorandum of Common cycle 40, July 2013 memorandum of IFS cycle 39R1, July 2013 (...)
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Section : ALADIN annual workshops (joint with HIRLAM ASM from 2007)
WK24: Participants
The National Meteorological Administration of Romania will host the 24th ALADIN workshop / HIRLAM All-Staff Meeting 2014 (07-10 April 2014) and HMG/CSSI meeting (11 April 2014), in Bucharest. Practical information on the local organiser webpage WK24: Participants Agenda and list of (...)
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Section : Internal contacts
List of ALADIN Directors or usual representatives to the General Assembly, updated on August 21, 2014 COUNTRYNMSFORENAMEFAMILY NAMEEMAIL ALGERIA ONM Brahim IHADADENE AUSTRIA ZAMG Michael STAUDINGER with copy to BELGIUM RMI (...)
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Section : Documentation on cycles and coordination meetings
IFS/ARPEGE coordination meeting, Reading, June 15, 2015 IFS/ARPEGE coordination video-conf, February ??, 2015 (date to be discussed later) Minutes of IFS/ARPEGE coordination video-conf, November 13, 2014 Minutes of IFS/ARPEGE coordination meeting, Toulouse, June 2, 2014 Minutes of IFS/ARPEGE (...)
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Section : OOPS
Technical video-conference : meeting number 2 towards CY42: : October 16, 2014 Technical video-conference : meeting number 1 towards CY42 : : August 26, 2014 OOPS Steering Committee : June 3, 2014 in Toulouse Technical video-conference : meeting number 7 towards CY41 : May 13, 2014 Technical (...)
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Physiography (current status)
Article published on 3 July 2009
by JFM

Orography GTOPO30 at 30’’ resolution GLOBE database NOAA/NGDC resolution 30’’ Global 1km data GTOPO30 GLOBE 30’’ GTOTPO30 Turbulent orography form drag
Soil types FAO at 10 km resolution : fraction of sand and clay FAO Digital Soil Map of the World at resolution 10 km FAO soil database, reduced to 3 classes WHS (UKPP used IGBP) FAO data at 5’ by 5’ interpolated at the operational model resolution
Soil depths ECOCLIMAP database at 1km resolution Lookup table with ecotypes Constant depths (2.5 m for w and 14.58 m for T) Lookup tables with ecotypes Constant depth of 3 m Constant depth at 2.89 m
Land covers ECOCLIMAP resolution 1 km 255 ecotypes derived from NDVI classification and a set of 12 pure ecotypes. Lookup tables between pure ecotypes and "flux conserving" averages for mixed ecotypes GLC2000 and GLOBCOVER 2009; lookup tables between land use categories and model parameters Global 1km data GLCC and CORINE (HIRLAM) ECOCLIMAP (HARMONIE) IGBP 1km dataset
ITE 25m dataset in UK model
Global Land Cover Characterization Data Base (GLCC) at 1km resolution (based on AVHRR) with the BATS classification and LAI climatology from MODIS
Lake properties ECOCLIMAP database at 1km resolution Land use dataset +GLDB for lake depth GLDB (HIRLAM) and ECOCLIMAP (HARMONIE) Inland water bodies (GLCC)
Glacier properties ECOCLIMAP database at 1km resolution FAO dataset and consistency checks GLCC (HIRLAM) and ECOCLIMAP (HARMONIE) Land use dataset GLCC
Land sea mask Fractional from ECOCLIMAP database resolution 250 m over Europe (CORINE) and 1km elsewhere Land use dataset From land cover data (GLCC+CORINE) (HIRLAM) and ECOCLIMAP (HARMONIE) Inferred from IGBP 1km land cover dataset GLCC and GTOP30 (at 30’’ resolution)
Deep soil climatologies None T2m climatology from CRU of University of East Anglia Derived from T2m climatology (?) None


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