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

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 ALADIN-HIRLAM Newsletter n°9 : just published

This summer 2017 edition was dedicated to the Joint 27th ALADIN Workshop & HIRLAM All Staff Meeting 2017 that took place on 3-6 April 2017 in Helsinki (Finland). Furthermore a special focus is proposed on 2 specific articles: AROME for nowcasting (AROME-NWC) ;Tuning the implementation of the radiation scheme ACRANEB2.
The editorial recalls the (already long) ALADIN-HIRLAM story and presents the convergence roadmap.
Enjoy reading !


 14th PAC and 5th HAC/PAC meetings, 22 May 2017, Copenhagen, Denmark

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The 14th PAC meeting and the 5th HAC/PAC meeting were held on the premises of the Danish Meteorological Institute in Copenhagen.
The minutes are being reread and will be published as soon as they are approved by the participants. An ALADIN-HIRLAM convergence roadmap was presented, in order to address the issues in the 2014 declaration of the 1st joint ALADIN General Assembly and HIRLAM Council meeting : the signing of the new A-H agreement solved the issue about data policy, the scientific legacy is being assessed with the publication of scientific papers; a new process for the Rolling Work Plan was proposed to define/articulate the meaning of the core/common/specific activities and the two core programs (DA, dynamics). The scope of the Common Codes was defined and their list will be proposed at the next GA/C. A working group was created to propose a definition of the ToR of the future single consortium. A first proposal for the starting IPR and their evolution was also discussed.


 Joint 27th ALADIN Workshop & HIRLAM All Staff Meeting 2017, 3-7 April 2017, Helsinki, Finland

The joint 27th ALADIN Wk & HIRLAM ASM 2017 was held on the premises of the Finnish Meteorological Institute in Helsinki during the first week of April 2017 :

  • 3-6 April :joint Wk& ASM,
  • 4 April late afternoon : LTM meeting,
  • 7 April : HMG/CSSI meeting.

The pdf files and the video of the presentations are on line, together with the minutes of the WGs/discussions and the pdf of the posters (when sent by their authors). See also : the Minutes of the LTM meeting, the Minutes of the HMG/CSSI meeting.


 Soon to come


Past events


 ALADIN flyers

After the request of the ALADIN General Assembly, some leaflets (flyers) were prepared at the end of 2016 and beginning of 2017. The first page is common to all Partners and the 2nd page is personalized for each Partner. Below are some examples, the flyers were printed and a pdf version can be downloaded in the dedicated page.

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ALADIN leaflet : page 1
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ALADIN leaflet : page 2 (CZ)
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ALADIN leaflet : page 2 (FR)
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ALADIN leaflet : page 2 (HR)

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.

by Eric
Article published on 26 January 2017
Section : Stay reports
SATOURI A.: Phasing report COOPMANN O. Amélioration des analyses météorologiques par l’assimilation de mesures infrarouges satellitaires sensibles à l’ozone (M2) MOKHTARI M. et AMBAR A.: Updating and validation of Arome_dust (French version, English version) BENAMARA M.: Expériences avec (...)
Article published on 30 January 2017
dernière modification le 31 January 2017
Section : Software and applications
Vertical levels used in operational systems and their standard atmosphere heights

(updated on January 20, 2017)

Within ALADIN and HIRLAM Consortia, the ALADIN, ALARO or AROME configurations run operationally on a wide range of computers, from single workstations to vectorial computers in shared or distributed memory, and on a cluster of workstations under Linux. 46 (...)

Article published on 31 January 2017
dernière modification le 7 September 2017
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°10, due in January 2018 Please, do use the proposed templates when preparing the (...)
Article published on 27 March 2017
dernière modification le 14 April 2017
Section : ALADIN, HIRLAM or HARMONIE Working Weeks
The ALADIN DA basic kit Working Days took place in Lisbon at the IPMA premises, on 22-23 March 2017. Agenda and presentations General session I Background and scope of the meeting : Core program on Data Assimilation : Piet Termonia General introduction to DA : DA vocabulary Overview of LACE (...)
Article published on 28 March 2017
Section : ALADIN, HIRLAM or HARMONIE Working Weeks

After the strategy meeting in Toulouse (26-28 April 2016) it was decided to write an ALADIN-HIRLAM core program on dynamics, continuing the past road map.

[Agenda]] First part : Presentations Fabrice Voitus : A semi-implicit NH quasi-elastic soundproof mass-based dynamical system for NWP (...)

Article published on 6 April 2017
dernière modification le 3 August 2017
Section : ALADIN annual workshops (joint with HIRLAM ASM from 2007)
The joint 27th ALADIN Wk & HIRLAM ASM 2017 was held on the premises of the Finnish Meteorological Institute in Helsinki - Dynamicum - (see How to find FMI, see also the map over Dynamicum) during the first week of April 2017 : 3-6 April :joint Wk& ASM, 4 April late afternoon : LTM (...)
Article published on 10 April 2017
dernière modification le 7 July 2017
Section : Collaboration
HIRLAM-C matrix

After the first contact of the Hirlam Management Group in autumn 2003, many ALADIN-HIRLAM mesoscale collaboration events took place in 2004 : training course, granted licence for research, full code cooperation ...

During the 9th Assembly of ALADIN Partners (Split, 29-30 0ctober 2004), an (...)

Article published on 3 May 2017
Section : Scientific plans and reports

Some changes of the work plan build process (w/r to the MoU4 practices) were introduced in 2017 in the framework of the newly signed ALADIN-HIRLAM cooperation agreement, the strategy meeting held in Toulouse and the 2nd joint ALADIN General Assembly and HIRLAM Council.

The Directors approved (...)

Article published on 13 June 2017
dernière modification le 20 June 2017
Section : ALADIN annual workshops (joint with HIRLAM ASM from 2007)
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 : 16-19 April 2018 :joint Wk& ASM, 20 April 2018 : HMG/CSSI meeting. Some side meetings will also take place during that week, as well as the usual (...)
Article published on 19 June 2017
dernière modification le 20 June 2017
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 during the 1st or the 2nd week of April, more probably on 1-4 April 2018 (Wk&ASM) and on 5 April (HMG/CSSI meeting), the exact dates will be confirmed at the 28th ALADIN Wk & (...)
Article published on 7 August 2017
dernière modification le 31 August 2017
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 [2] : the Minutes of the PAC meeting are one of the preparatory documents of the GA. See (...)
by Patricia , JAM , Eric
Article published on 1 September 2017
Section : ALADINers

OFFICE NATIONAL DE LA METEOROLOGIE 1 AVENUE KHEMISTI B.P. 153 Dar El Beida ALGER ALGERIA [ GMT +1 ] www.meteo.dz PHOTO - SURNAME - firstname - TELEPHONE - TELECOPY - e-mail MTO_ALGER

SWITCHBOARD 213 21 50 77 93

ABDENOUR AMBAR 213 21 50 77 93 ext 312 213 21 75 33 33 (...)









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

News

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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at random

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