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Dijana Klarić

RC LACE 2004. Regional Co-operation of A, CR, CZ, H, SI, SK. Dijana Klarić. RC LACE efforts 2nd RC LACE MoU (2003-2005 ). Operations & maintenance Networking Research & development. Operations & maintenance. all 6 members - individual operational applications SK*****

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Dijana Klarić

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  1. RC LACE 2004 Regional Co-operation of A, CR, CZ, H, SI, SK Dijana Klarić RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  2. RC LACE efforts2nd RC LACE MoU (2003-2005) Operations & maintenance Networking Research & development RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  3. Operations & maintenance all 6 members - individual operational applications SK***** almost the same domains mesh size (x 12.2km - x 6.5 km) vertical resolutions (L37 - L45) envelope - no envelope orography dyn. adapt; blending; 3DVar (e-suite) maintenance and porting of SW RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  4. Telecommunications RETIM2000 vs Internet Satellite dissemination DVB bandwidth eq. to 128 kBps link RETIM 40% budget as backup to Internet RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  5. Networking (Who? Why? When?) • Decentralized research & 3 WG • work in AAA environment • training for newcomers and WS • ALADIN -Training on ALADIN-NH, TLS • March 15-19, 2004 • SRNWP - 2nd WS on Verification, De Bilt • June 14-15, 2004 • actions: LACE WWW pages and FTP server coordinated verifications list of cases, MAP RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  6. Verification project ALADIN Project organized by Slovenia started 2002 aims: to unify the verification on synoptic scale to impose the international standards to reduce duplication of work to compare different ALADIN at the same domain environment toward meso-scale verification RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  7. Verification project • Prototype • station list 348 +74 ECMWF TM 430 RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  8. DB of Case Studies RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  9. RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  10. MAP SOP cases • ECMWF Re-analysis of MAP SOP • different surface parameterization in ARPEGE • “Proper downscaling of ECMWF re-analysis” • work performed by LACE Data Manager RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  11. Scientific Plan 2003/2004 2nd RC LACE Steering Committee meeting 2003 • Plans from year 2003 were fulfilled • 98 person/months 2004 • to work on opened subjects • to adjust R&D to AAA plans • to learn meso-NH physics ? RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  12. Scientific Plantoward AAA compatibility • Dynamics • NH ALADIN is numerical core of AAA • interfacing dynamics vs. physics is in focus • Physics • physics for different scales 10km, 5km, 2.5 km • various schemas and SW • up-scaling or downscaling approach • Data Assimilation • more non-classical observations RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  13. Working Group forDynamics and Coupling . Non-hydrostatic dynamics Interative schemes Choice of additional NH variables Bottom boundary condition Finalization of NH Dynamics Diabatism in NH . Dynamics – other topics Horizontal diffusion (SLHD) Radiative UBC Physics/dynamics interface RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  14. Results from WG forDynamics and Coupling Dynamics/Physics interfaces • treatment of physical tendencies in PC scheme • mass conservation • the mass of water removed from the atmosphere is replaced by the dry air • ALADIN: physics tendencies at origin point Investigation: • 1/2 at origin and 1/2 at arrival points • stratiform prec. at arrival, rest at departure point RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  15. Results from WG forDynamics and Coupling RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  16. Working Group forPhysics . Shallow convection / PBL cloudiness Convergence Xu-Randall and Seidl-Kann scheme Experiments on inversion formation and sustenance . CAPE & deep convection triggering . Orographic drag/envelope Validation on precipitation and wind (x=10 km - 2.5 km) V. Numeric of parameterization schemas V. Prognostic cloud water RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  17. Results from WG forPhysics The role of surface evaporation in the triggering of mountain convection in ALADIN => Mountains with their differential evaporation and solar heating regimes create mesoscale baroclinic circulations and may establish an environment locally favourable for deep convection • Weather situation: a series of days with deep convection triggered locally by orographic effects in the absence of large-scale forcing • Drau valley in Carinthia, Austria‘s southernmost province • 24-hour model run with evaporation set equal to zero (dx=4km) RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  18. Results from WG forPhysics Conclusions: • Near-surface humidity convergence over the mountain chains reduces by around 30% to the north („dry“) side of the boundary, but by only 10 – 20% to the south („humid“) side • Convective precipitation decreases significantly; remaining convection concentrates on the mountains along and to the south („humid“) side of the air mass boundary, where it can still obtain enough moisture RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  19. red numbers: first precipitation at .. UTC REF EXP RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  20. 2m specific humidity (09 UTC): REF EXP RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  21. 2m humidity divergence (12 UTC): Green numbers: relative decrease of humidity convergence [%] compared to REF REF EXP RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  22. Working Group forData Assimilation . Methods - Algorithmic aspects Isotropy properties of the B matrix Multivariate humidity formulation in the B matrix Lonnberg -Hollingsworth versus NMC variances . Methods - Cycling . Observations ATOVS and MSG AMDAR 10 wind Wind profilers data RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  23. Working Group forData Assimilation (cont.) . Observations (cont.) Radar data V. Surface Snow analysis experiments V. Latent Heat Nudging VI. LAMEPS Optimization of ARPEGE singular vector computations for CE ALADIN EPS using PEACE perturbations RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  24. Results from WG forData Assimilation Assimilation of ATOVS data • improvements of treatment of AMSU-A, AMSU-B • Choice for radiance-bias correction for LAM bias corr. coefficients: scan-angle biases and coefficients for air-mass predictors LAM- satellite paths are cut  problems for scan-angle biases Harris and Kelly reduction of bias actions: to enlarge domain for 3DVar to re-compute bias corr. Coefficients for LAM RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  25. Results from WG forData Assimilation RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  26. Results from WG forData Assimilation Snow analysis with CANARI significant T2 overestimation in strong winter inversion diagnostics: RH2 is too dry, short wave radiation is too big too strong 10m wind and wind gust NO SNOW analysis cure: 3DVAR +CANARI snow analysis + modified physics RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  27. 10-12. deg. err. Too warm 3D-VAR Results from WG forData Assimilation 4-6. deg. err. 4-6 deg. err. RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  28. Results from WG forData Assimilation • LACE Data Assimilation mini Workshop (Budapest, 20-22 October, 2003) RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

  29. Future Actions  WS on dynamics-physics interfacing November 2004, Prague  training in NH ALADIN Early winter 2005, Prague  WS on maintenance Autumn 2005, Budapest RC LACE 26th EWGLAM Meeting 4-6 October 2004, Oslo

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