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

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After the Joint 25th ALADIN Workshop & HIRLAM All Staff Meeting 2015 (13-16/04/2015, Elsinore, Denmark), please consult the dedicated webpage : agenda, list of participants, pdf files of the presentations and posters, minutes of the discussions and working groups, some photos.

90 people from 23 countries (all the 16 ALADIN countries were represented in Elsinore) gave more than 50 presentations and presented about 35 posters. Some working groups and many side meetings also took place during the week.

The ALADIN Local Team Managers held their 18th meeting (the first one ever where all partners were represented).

The ALADIN CSSI and the HIRLAM Management Group had their annual coordination meeting on Friday, at the Danish Met Institute premises in Copenhagen.

The 5th edition of the combined Newsletter of the HIRLAM and ALADIN consortium will be dedicated to this 25th meeting. People who gave a presentation or presented a poster in Elsinore are kindly asked to write down an article and send it to Patricia before the end of July (please do use the proposed templates).

The 12th HAC meeting and the 3rd joint HAC/PAC meetings took place in Helsinki in May 21st, 2015. The major topic was the ALADIN-HIRLAM convergence : the outcomes of the common declaration adopted by the 1st joint ALADIN General Assembly & HIRLAM Council, the outcomes of the data policy task force guidance about the ALADIN/HIRLAM common agreement for the next MoUs and the organization of the 2nd joint ALADIN General Assembly & HIRLAM Council and the MoUs signatures in Alger.

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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.

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.

Article published on 27 January 2015
Section : On-line registrations
Registration Form : Application Deadline: 7th March, 2015 Consult the list of participants Back to the main page of the 25th Wk & 2015 ASM
Article published on 30 January 2015
dernière modification le 29 May 2015
Section : ALADIN, HIRLAM or HARMONIE Working Weeks
Since MoU4, the ALADIN budget is used for working weeks (organisation and attendance funding) and, after the GA gave its approval in 2013, to send ALADIN people also to HIRLAM WW. Below is the list of these WWs, with links to reports or outcomes when available. HARMONIE System Working Weeks Sep (...)
Article published on 4 February 2015
Section : Scientific plans and reports

HIRLAM-ALADIN rolling plan

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 (...)

Article published on 5 February 2015
dernière modification le 11 May 2015
Section : ALADIN, HIRLAM or HARMONIE Working Weeks
ProgrammeReportPresentations Piet Termonia: The ALADIN consortium: goals and work practices Neva Pristov: The physics of the model(ALARO) Claude Fischer: AROME France Christoph Zingerle: Model verification and tools Alex Deckmyn: The GLAMEPS system Florian Weidle: The LAEF system Piet (...)
by JAM
Article published on 5 February 2015
dernière modification le 18 June 2015
Section : Visitors in Toulouse
The table below presents the list of Toulouse visitors for 2015 with the subject of their work, their mentor(s), the dates of their visit. Consult the offices table for phone number and office number of the visitors NAMECOUNTRYSTARTENDSUBJECTMENTOR BOCHENEK BOGDAN POLAND 12/01/15 29/01/1 (...)
Article published on 16 April 2015
dernière modification le 23 June 2015
Section : About the aladin websites

After the Joint 25th ALADIN Workshop & HIRLAM All Staff Meeting 2015 (13-16/04/2015, Elsinore, Denmark), please consult the dedicated webpage : agenda, list of participants, pdf files of the presentations and posters, minutes of the discussions and working groups, some photos.

90 people (...)

Article published on 6 May 2015
dernière modification le 19 May 2015
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 (GA) Chairperson : Abdalah Mokssit (Ma), elected in November 2013 Vice-Chairperson : Martin Benko (Sk), elected (...)
Article published on 11 May 2015
Section : Software and applications

HARP originally stands for the Hirlam-Aladin R Package for verification (although R package is extensively used in the HARP, the tool package is not limited to the R language and utilities).

The main goal of the HARP development is to provide the HIRLAM-ALADIN community with suitable tools for (...)

Article published on 12 May 2015
Section : ALADIN Local Team Managers (LTM) meetings
LTM meetingDatePlaceMinutes 20th LTM meeting 5 April 2016 Tunisia (besides ALADIN workshop) 19th LTM meeting 6 October 2015 Serbia (besides EWGLAM/SRNWP meetings) 18th LTM meeting 15 April 2015 Elsinore, Danemark (besides ALADIN workshop) minutes 17th LTM meeting 30 September 2014 (...)
Article published on 12 May 2015
Section : ALADIN annual workshops (joint with HIRLAM ASM from 2007)
The Institut National de la Météorologie (NMS of Tunisia) will host the joint 26th ALADIN Wk & HIRLAM 2016 ASM and the besides meetings : Wk and ASM on 4-7 April 2016, LTM meeting on 5 April, HMG-CSSI on 8 April 2016.
Article published on 2 June 2015
Section : EWGLAM/SRNWP meetings and workshops

The 37th European Working Group on Limited Area Modeling (EWGLAM) and 22nd Short Range Numerical Weather Prediction (SRNWP) meetings will be held in Belgrade, Serbia, 5-8 October 2015. The LTM meeting will also be help in Belgrade, probably on Tuesday (to be confirmed).

Announcements and (...)

Article published on 23 June 2015
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 [4] : the Minutes of the PAC meeting are one of the preparatory documents of the GA. See (...)








Modelling components (current status)
Article published on 3 July 2009
by JFM by

modelling component ALADIN COSMO HIRLAM UM/JULES ECMWF
surface energy balance Tile approach with separate energy budgets (sea/inland water/nature). One single surface temperature for the "nature" tile (bare soil/vegetation/snow) Surface temperature is area weighted average of temperature of snow covered and snow free surface fraction A tiled scheme with 5 tiles : water (sea+lakes), sea-ice, bare soil, low vegetation and forest (HIRLAM) ; Tile approach with sea/inland water/nature/town (HARMONIE) Tile scheme with 9 surfaces, or one aggregated surface. 9 tiles include 5 vegetation types, bare soil, urban, lakes and ice Tile approach with separate temperature and energy budget for each. Up to 8 tiles : 2 vegetations (low and high), 3 snow/ice (on bare soil, low and high vegetation), 2 water (ocean/lakes and interception)
coupling with the atmosphere Implicit (external) Explicit Explicit (HIRLAM) Implicit (HARMONIE) Implicit Implicit (internal)
Soil transfers 3-layer force-restore method ISBA scheme : 1st layer 1 cm / 2nd layer root zone (between 1 and 3 m) / 3rd layer recharge zone (between 0.5 and 1 m) 7-layer soil model. Layer depths between 1 cm and 14.58 m. Solution of the heat conduction equation Force-restore formulation ISBA (HIRLAM) 3-layer ISBA scheme (HARMONIE) 4 layer diffusion equation model for heat and Darcian flow for moisture 4-layer scheme (bottom depth : 7, 28, 100, 289 cm), based on Richards equation for soil water and diffusion equation for heat
Frozen soils 2 soil ice reservoirs (surface+deep) Temperature and soil type dependent computation of fractional freezing/melting of total soil water content in 6 active soil layers Explicit soil ice (HIRLAM) 2 soil ice reservoirs (HARMONIE) 4 layer scheme with phase changes Diagnostic function of temperature. Influences the hydraulic parameters
Vegetation One layer – Canopy resistance formulation for transpiration (Jarvis type) – interception reservoir One layer – Evapotranspiration after Dickinson (1984) – interception reservoir Surface resistance of Jarvis type. Intercepted water One layer – Canopy resistance formulation for transpiration (Jarvis type) – interception reservoir One layer – Canopy resistance formulation for transpiration (Jarvis type) and ISBA-Ags formulation for carbon fluxes – interception reservoir. Separate energy balance for each tile
Snow model One layer – prognostic variables : snow water equivalent, snow density, snow albedo One layer - prognostic variables : snow temperature, snow water equivalent, snow density, snow albedo Separate energy balance for snow pack and snow interception reservoir (HIRLAM) one layer no separate every budget (HARMONIE) Zero layer (uses top soil layer) – snow depth, albedo interception on needleleaf trees One layer – prognostic variable : snow water equivalent, snow albedo. Revised snow density and diagnostic liquid water storage
Lake model Prescribed surface temperature (analysis) FLake FLake (HIRLAM) and prescribed LST (HARMONIE) Saturated soil or high thermal inertia Prescribed surface temperature (analysis)
Sea-ice Prescribed surface temperature (analysis) Sea-ice model Fraction from analysis only, 2 layer ice model with prescribed depth (HIRLAM) no sea model (HARMONIE) Single layer thermodynamic model Fixed depth 4-layer model
Ocean model Prescribed surface temperature (analysis) – Charnock formulation for roughness – ECUME transfer coefficients Prescribed surface temperature (analysis) – Charnock formulation for roughness length None Prescribed surface temperature (analysis) – Adapted Charnock formulation for roughness length Prescribed surface temperature (analysis)
Urban areas Modified surface roughness, albedo, emissivity (rocks) Modified surface roughness, leaf area index, plant coverage Modified surface parameters (HIRLAM) and TEB model (HARMONIE) High inertia canopy None
Chemistry module None ART optional None None None
Surface boundary layer 5-layer scheme solving turbulent prognostic equations without advection Application of the turbulence scheme at the lower boundary and interative interpolation.
Roughness length for scalars implicitly considered by calculation of an additional transport resistance throughout the turbulent and laminar roughness layer
Monin-Obukhov similarity theory (HIRLAM) CANOPY scheme (HARMONIE) Monin-Obukhov similarity theory – explicit formulation of vertical profile Monin-Obukhov theory

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