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Dijana Klarić

RC LACE 2003. From Regional Center to Regional Co-operation. Dijana Klarić. Austria Croatia Czech Republic Hungary Slovenia Slovakia. New Motivations and Goals. Network of NWP partners in Central Europe

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Dijana Klarić

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  1. RC LACE 2003 From Regional Center to Regional Co-operation Dijana Klarić RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  2. Austria Croatia Czech Republic Hungary Slovenia Slovakia RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  3. New Motivations and Goals Network of NWP partners in Central Europe  Common R&D on meso-scale NWP  Individual operational applications, dedicated to end-users RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  4. RC LACE new structure2nd RC LACE MoU (2003-2005) Council LACE Steering Committee Management Group • Project Leader • ALADIN System Co-ordinator • Data Manager Working Group Leader for • Data Assimilation • Dynamics and Coupling • Physics RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  5. Common objectives Maintenance of ALADIN code ARPEGE LBC for LACE domain (00 and 12 UTC, 3h freq.) Telecommunications Satellite dissemination RETIM2000 - DVB equivalent for 128 kBps link RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  6. Decentralized responsibilities Operational Applications (AU,CR,CZ,HU,SI) Archiving Local and decentralized R&D RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  7. Scientific Plan for year 2003General goals • to keep the level of R&D from previous period (40% of ALADIN human power) • to continue the work on opened subjects • to add more networking • to organize R&D stays of the scientists • to organize training, workshops RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  8. Scientific Plan for year 2003Local research and missions • Each service organized environment for local research and R&D visits • Visits are financed by LACE 15 person/months R&D missions : 4 person/months R&D stays par each WG 3 person/months equivalent for workshops and meetings Total R&D: ~90 person/months for 2003 RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  9. Scientific Plan for year 2003Working groupplans Working Group Plans Projects Subjects Workshops and training Link with ALADIN and ALATNET subjects 1st LACE Steering Committee Meeting RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  10. Working Group forDynamics and Coupling • Non-hydrostatic dynamics • Interative schemes • Choice of additional NH variables • Bottom boundary condition • Dynamics – other topics • Horizontal diffusion • Radiative UBC • Physics/dynamics interface • Coupling • Spectral coupling • Surface pressure tendency coupling • Two-time nesting • Coupling files initialization RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  11. Results from WG forDynamics and Coupling • Mini-coupling workshop (Ljubljana, 17-21 February 2003) part of ALATNET activities RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  12. Results from WG forDynamics and Coupling NH Dynamics Reformulation on Bottom Boundary Condition for term non hydrostatic pressure departure to cure the problem of “chimney effect” in SL scheme Before: believe that chimney problem is specific to SL advection Results find: • turning ON horizontal diffusion can create chimney effect in vertical velocity even in Eulerian advection • stronger diffusion caused stronger chimney to continue with 2D academic tests RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  13. Working Group forPhysics .Shallow convection / PBL cloudiness • Prognostic cloud water • Subgrid -scale cloudiness • Non-local vertical transport • Radiation .CAPE & deep convection triggering . Orographic drag V. Physics/dynamics interface (AROME) RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  14. Results from WG forPhysics • Deep convection triggering - overestimation of convective precipitation and cloudiness over Alps (to wide domains, to long prec. events) 1-Threshold for second KUO-type triggering 2-Cumulated moisture convergence -as condition for triggering 3-Time delay equation for moisture convergence RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  15. Results from WG forPhysics Orographic drag study - for ALADIN and ARPEGE - reduction of envelope presentation of orography - optimization of sub-grid drag parameterization Results: some form of semienveloped orography RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  16. Working Group forData Assimilation I .Methods - Algorithmic aspects • Biperiodic 3d-VAR analysis increments • Moving to 3d-FGAT • Study of vertical structure of 3d-VAR analysis increments • Design of an explicit blending . Methods - Cycling • Comparison of "DFI" and "explicit" blending • Blendvar cycling experiments • 3d-VAR cycling experiments to elaborate cold air-pad cases RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  17. Working Group forData Assimilation (cont.) . Observations • Implementation of ODB – training • Assimilation of ATOVS data; Radar data; AMDAR data V. Surface • Implementation of CANARI/Diag-pack • Smoothing of Soil Wetness Index • Assimilation of 10m wind data RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  18. Results from WG forData Assimilation • LACE ODB training (Budapest, 14-18 April, 2003) Observation Data Base from AL25t2 cycle - implementation of ODB - technical exercises - compilation, tutorials RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  19. Results from WG forData Assimilation • Study of vertical structure of 3d-VAR analysis increments - NMC and “lagged” statistics for Background error covariance matrix B - vertical structure of NMC and “lagged” statistics - AIREP, Temp Study of vertical structure of 3d-VAR analysis increments - lagged statistics is responsible for reduction of analysis increments and more mesocsale structure of correlation functions - reduction is smaller on lower levels, because small scale processes are more intensive in lower atmosphere RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  20. Results from WG forData Assimilation Smoothing of Soil Wetness Index (SWI) over LACE Domain - problem: stationary hot spots in 2m Temperature field - same problem in ARPEGE and ALADIN/France caused by to warm soil RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

  21. Future Actions • LACE Data Assimilation Training and Workshop (Budapest, 20-22 October, 2003) • 13th ALADIN Workshop (Prague, 24-28 November,2003) • 2nd RC LACE Steering Committee Meeting (Prague/Ljubljana, mid December, 2003) Final report of R&D 2003; SP for 2004 RC LACE 25th EWGLAM Meeting 6-9 October 2003, Lisbon

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