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

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The PAC and PAC-HAC meeting took place in Dublin on 22-23 May 2018. The main point at the agenda of these meetings was the review of the progress of the convergence roadmap and the preparation of a "scope document" as requested by the GA-C at their last meeting (the PMs and the PAC-HAC were tasked to reflect on the scope of the future single consortium, to identify the core areas of collaboration at the start of the single consortium .., to develop a vision and mission and to identify core values, ...). See the minutes of these meetings.

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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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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, https://doi.org/10.5194/gmd-11-257-2018, 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.


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 13 December 2017
dernière modification le 9 March 2018
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

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 1 March 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 1 June 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 (...)
Article published on 4 April 2018
dernière modification le 5 April 2018
Section : Governance
ALADIN Partners map

The governance and the management of the ALADIN Consortium is defined by the 5th MoU and by the 22ndt General Assembly at the end of 2017 (see also history of chair persons).

Please consult the complete MoU5 document for details.

For a quick view : the Members map the matrix schematically (...)

Article published on 5 April 2018
dernière modification le 6 April 2018
Section : COMM

This template is proposed for the ALADIN presentations. It was first used at the 21st ALADIN GA (see for instance the Tour d’ALADIN). A new version was prepared in April 2018 when Algeria NMS changed their logo.

In order to keep it update, the Local Team Managers should make sure to let (...)

Article published on 15 April 2018
dernière modification le 14 June 2018
Section : ALADIN annual workshops (joint with HIRLAM ASM from 2007)
28<sup class=th Wk&ASM 2018 : speakers" title="28th Wk&ASM 2018 : speakers" />
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. 16 April 2018, 08:30-20:00 : opening session, DA session, Posters session and LTM meeting, icebreaker 17 April 2018, 08:30-19:00 : Physics and Dynamics (...)
Article published on 16 April 2018
dernière modification le 12 June 2018
Section : About the aladin websites
28<sup class=th Wk&ASM 2018 : speakers" title="28th Wk&ASM 2018 : speakers" />
The PAC and PAC-HAC meeting took place in Dublin on 22-23 May 2018. The main point at the agenda of these meetings was the review of the progress of the convergence roadmap and the preparation of a "scope document" as requested by the GA-C at their last meeting (the PMs and the PAC-HAC were (...)
Article published on 4 May 2018
Section : ALADIN Local Team Managers (LTM) meetings
LTM meetingDatePlaceMinutes 26th LTM meeting 2 April 2019 Madrid, Spain (besides ALADIN workshop) 25th LTM meeting 2 October 2018 Salzbourg, Austria (besides EWGLAM/SRNWP meetings) 24th LTM meeting 16 April 2018 Toulouse, France (besides ALADIN (...)
Article published on 9 May 2018
dernière modification le 17 July 2018
Section : Scientific plans and reports

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 (...)










Assimilation and analysis (current status)
Article published on 3 July 2009
by JFM by

Model parameters ALADINCOSMOHIRLAM/HARMONIEUM/JULESECMWF
Soil temperature and water content Optimum interpolation based on screen-level analysis increments of T and RH 2-dimensional (vertical and temporal) variational technique using 2-m temperature analyses at 12 and 15 UTC
Analysed variables : soil moisture of the top 5 soil layers (0-81 cm) at 00 UTC
Optimum interpolation based on screen-level analysis increments of T and RH Errors in forecasts of screen T and RH used to calculate increments to soil moisture. NAE and M4 use UKPP over UK and interpolated global SMC elsewhere
Level 1 T atmospheric increments applied to top soil level in absence of snow
EKF for soil moisture and OI for soil/snow temperatures based on screen-level analysis increments of T and RH
Sea surface temperature Optimum interpolation using surface observations with a relaxation towards OSTIA SST analysis Correction method. Background field from GME SST analysis using NCEP 0.5°x0.5° SST analysis that includes satellite data. Observations from SYNOP-SHIP and BUOY. OI (HIRLAM) - interpolation from OSTIA (HARMONIE) Interpolated from OSTIA analysis Aggregation of OSTIA SST products based on surface observations and satellite products
Sea-ice extent Derived from sea-ice concentration (used only to update sea-ice temperature) Sea ice cover analysis from BSH (German Institute for shipping and hydrology) for the Baltic sea. Resolution lon/lat : 0.167x0.1 degrees, NCEP analysis in other areas Taken from OSISAF Interpolated from OSTIA analysis Aggregation of OSTIA and NCEP sea-ice products which are the OSI-SAF products (from SSM/I data)
Sea-ice temperature From BSH and NECP analyses Interpolated from ECMWF analyses
Snow depth Background values with relaxation towards climatology from the global model ARPEGE Correction method. Used data : background values from COSMO model, snow depth observations from SYNOP stations, present and past SYNOP weather, precipitation amount, 2-m temperature analysis (+model prediction). Monthly snow depth, climatology from ECMWF for permanently glacial covered areas OI based on in-situ measurements Model values corrected using IMS mask and use of background info OI analysis using surface observations (SYNOP+national networks)+ use of 4km NOAA/NESDIS snow cover extent to correct snow depth observations
Lake Closest point from SST analysis (using NCEP 0.5° for large lakes) Flake values from last forecast FLake + OI from LST observations (Finland, SYKE) Climatology or nearest SST Great lakes : interpolation of the NCEP SST products. Other lakes: SST derived from T2m climatology from Legates and Wilmott (1990)
Vegetation None None None Seasonal LAI climatology derived from MODIS data LAI climatology derived from MODIS data

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

operala++at++meteo.fr

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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