ALADIN

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• Regular 14th General Assembly of ALADIN Partners, Istanbul, 12-13 November 2009

  9 April 2010, by Patricia
  14th Regular General Assembly of ALADIN Partners, Istanbul, Turkey, 12-13 November 2009 Minutes of the 14th assembly Participants of the 14th assembly Agenda with on-line presentations 1. Welcome and opening of the meeting (14h on 12/11/09). 2. Adoption of the Agenda and of the Minutes of the 13th GA (GA Chair). 3. Report of the GA Chairman on the ‘Bureau meeting’, Brussels, 14/10/09. 4. Report of PAC Chairman (the PAC 5th Session took place in Paris, 29/5/09). 5. (…)

• STAY REPORTS 2010

  24 February 2010, by JAM
  – See also: JOBART François, Pierre NABAT, Emmanuel VULLIERME: Impact de la prise en compte des processus physiques dans le calcul des perturbations initiales de la PEARP: application à la prévisibilité des dépressions et des cyclones tropicaux FORAY A. et OHAYON W.: Modélisation des covariances inter-canaux des erreurs d’observation du sondeur IASI JIDANE Mohamed: TESTS ALADIN AVEC SURFEX ET CANOPY ESSAOUINI Karam: Constitution des fichiers climatologiques à partir d’un PGD FA pour (…)

• Visitors in Toulouse for 2010

  16 September 2009, by JAM
  The table below presents the list of Toulouse visitors for 2010 with the subject of their work, their mentor(s), the dates of their visit. Offices and telephones numbers can be found on the joined year plan. NAMECOUNTRYSTARTENDSUBJECTMENTOR VARELLA HUBERT FRANCE 01/01/10 31/12/10 Utilisation des ondelettes pour spécifier des corrélations filtrées et dépendantes de l’écoulement BERRE FORAY Anouck FRANCE 04/01/10 26/01/10 Modélisation des covariances inter-canaux des erreurs (…)

• Enhanced links with HIRLAM, LACE and GMAPDOC websites

  11 September 2009, by Patricia
  As decided during the Joint 19th ALADIN Workshop & HIRLAM ASM in Utrech in May 2009, the ALADIN website offers enhanced links with HIRLAM, LACE and the so-called GMAPDOC (ARPEGE/ALADIN/AROME documentation) websites. These websites are based on different CMS (Content Management System) but enhanced links are possible. Up-to-now, the exchanges between ALADIN-GMAPDOC-HIRLAM are wider than those with RC-LACE, due to the RC-LACE website CMS. Search engine : the ALADIN website offers now the (…)

• SMOSREX forcing and validation data

  18 August 2009, by JFM
  Validation fluxes (surface energy balance) Forcing data (radiation, precipitation, meteorology) Simulated LAI (derived from ISBA A-gs) Deep soil moisture measurements (2005-2007) Superficial soil moisture measurements (2005-2007) Soil temperature measurements (2006) Soil temperature measurements (2007) Details about file contents Soil temperature files contain : Date (ddmmyyyy) Time (UTC) Julian day Soil temperature at -1 cm Soil temperature at -5 cm Soil temperature at -20 cm Soil (…)

• Modelling components (under development)

  14 July 2009, by JFM
  ComponentALADINCOSMOHIRLAMUM/JULESECMWF Surface energy balance Patch approach over the nature tile : (up to) 12 different energy and water budgets Flexible tile approach with separate energy budgets Multi Energy Balance in SURFEX/HARMONIE Flexible tile scheme with user defined tiles and elevation bands None Coupling with the atmosphere None None None None None Soil transfers Multi-layer soil scheme (ISBA-DIF) Account for heterogeneous soil properties and organic soils Multi-layer soil (…)

• Physiography (under development)

  14 July 2009, by JFM
  ComponentALADINCOSMOHIRLAMUM/JULESECMWF Orography GTOPO030 database resolution 30†None None None at present, possibly SRTM in future None Soil types FAO database resolution 10 km : fraction of sand and clay Harmonized World Soil Database (HWSD) None HWSD + STATGO + observations None Soil depths ECOCLIMAP database resolution 1km. Lookuptable with ecotypes HWSD None HWSD None Land covers ECOCLIMAP resolution 1km. 255 ecotypes derived from NDVI classification and a set of 12 pure (…)

• Colleagues from HIRLAM in Toulouse

  13 July 2009, by JAM, Patricia
  DMI: Danmarks Meteorologiske Institut Lyngbyvej 100, 2100 København Ø, Denmark Tel: +45 3915 7500 - Fax: +45 3927 1080 EMHI: Estonia Meteorological and Hydrological Institute Toompuiestee 24, EST-10149 Tallinn, Estonia Tel:372 666 0901 - Fax:372 666 0909 LHMS: Lithuanian Hydrometeorological Service met.no: Meteorologisk Institutt PO Box 43, Blindern, N-0313 Oslo, Norway Niels Henrik Abels vei 40 (general); CIENS,Gaustadalleen (…)

• Assimilation and analysis (under development)

  11 July 2009, by JFM
  Model parametersALADINCOSMOHIRLAMUM/JULESECMWF Soil temperature and water content Extended Kalman Filter (EKF) for conventional and satellite observations. Offline mode First guess T2m and Q2m from open land/snow only (excluding forest) Addition of ASCAT data. Longer term plan is to develop an EKF scheme that uses screen observations and satellite data Extended Kalman Filter (EKF) for use of conventional (soil moisture and brightness temperatures). Offline mode Sea surface temperature (…)

• References and bibliography

  3 July 2009, by JFM
  ALADIN Best, M.J., A. Beljaars, J. Polcher, and P. Viterbo (2004) : A Proposed Structure for Coupling Tiled Surfaces with the Planetary Boundary Layer. J. Hydrometeor., 5, 1271–1278, 2004. Boone, A., J.-C. Calvet, and J. Noilhan (1999) : Inclusion of a third soi layer in a land surface scheme using the force-restor method. J. Appl. Meteor., 38, 1611-1630 Boone, A. (2000) : Modélisation des processus hydrologiques dans le schéma de surface ISBA : inclusion d’un réservoir hydrologique, (…)