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Presentation Jonker - Clouds and Computing

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Presentation Jonker - Clouds and Computing

  1. 1. Challenge the future Delft University of Technology Clouds and Computing Harm Jonker Department GeoScience and Remote Sensing
  2. 2. Clouds in Weather and Climate • Hydrological cycle • Radiation balance
  3. 3. Landsat 65km LES 10km ~mm ~100m~1µm-100µm Earth 107 m
  4. 4. Landsat 5 satellite picture 65km; resolution 30m
  5. 5. ~ 100km LES 10km ~mm ~100m~1µm-100µm Earth 107 m
  6. 6. ~ 100km LES 10km ~mm ~100m~1µm-100µm Earth 107 m DALES: Dutch Atmospheric Large Eddy Simulation TUD, KNMI, WUR, IMAU, ...
  7. 7. Local workflow! Editing simulation settings Interaction while simulating! High-Performance Simulations of Turbulent Clouds on a Desktop PC: Exploiting the GPU Schalkwijk, Griffith, Post & Jonker March 2012
  8. 8. GCM-scale cloud-scale large scale forcings. parameterised -warmer sea, -subsidence
  9. 9. GCM-scale cloud-scale cloud response
  10. 10. Schalkwijk, Jonker, Siebesma, JAS 2013 (under review) subsidence: (large scale circulation) Cloud Response (in these particular settings) EUCLIPSE project
  11. 11. subsidence: (large scale circulation) Schalkwijk, Jonker, Siebesma, JAS 2013 (under review) Cloud Response (in these particular settings)
  12. 12. GCM-scale cloud-scale large scale forcings. idealized
  13. 13. The KNMI Testbed Embedded in a Large-Scale Weather model GALES icw Neggers, Siebesma, v. Meijgaard Cabauw
  14. 14. The KNMI Testbed Preliminary comparison with observations 0 12 24 Cloud cover Average diurnal cycle over 22 ‘cumulus days’ Hour of day 30% 20% 10% 0% Promising results for cumulus days…. Observations Simulated observations
  15. 15. Increasing the problem size Multi-GPU simulations
  16. 16. Satellite image
  17. 17. 256 coupled GPUs (130 000 CUDA cores), 400x400x12km (40962x190 grid boxes) GALES: MULTI-GPU PRACE: CURIE courtesy: Jerome Schalkwijk
  18. 18. HD(CP)2: High Definition Clouds and Precipitation for Climate Prediction 16 German institutes, 50 pd/PhDs
  19. 19. 0.25 1 4 16 64 256 1024 4096 16384 65536 0.25 1 4 16 64 256 1024 4096 16384 65536 #GPUs "speedup" Weak scaling properties Oak Ridge 5000x5000km Curie 409x409km Curie 204x204km Perfect Scaling CURIE Oak Ridge? Dream on …. (we have the technology) What if we just had the facilities …
  20. 20. Combine with Radiation calculations courtesy Johan vd Dussen, Jerome Schalkwijk
  21. 21. Sustainable Energy Prediction and Management Tool courtesy Stephan de Roode
  22. 22. accurate observations (remote sensing) e.g. Russchenberg et al. e.g. Hanssen et al. humidity fields from InSAR (100kmx100km) High resolution Data Assimilation
  23. 23. Schalkwijk et al, BAMS 2012. Boing et al. JAS 2012
  24. 24. geo-engineering

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