1. 1 WRF Configuration for Ukraine  Input & boundary conditions from NCEP GFS model  3 day forecasts every 6 hours  10 km horizontal grid, 200x200 gridpoints  31 vertical levels  One run takes 3.5 hours on 2x2 AMD Opteron development cluster  To be on time HPC is required Air temperature (at 2 m) forecast using WRF model. Forecast is valid at 2007-07-23 06:00 UTC

2. 2 WRF Performance  WRF performance at SCIT-3 cluster (700+ CPU cores) Single iteration corresponds to forecast for 1 min in advance

3. 3 Weather Forecast Service using WRF  http://dos.ikd.kiev.ua/?option=com_wrf  In operational mode from March 2006

4. 4 Validation of WRF model  Average daily temperature at 2 m: –WRF vs. in-situ observations (Kiev) for Apr-Aug 2007 Histogram of Errors

5. 5 Application of WRF Model  Cascade –WRF –NOAH LSM  Tasks –drought monitoring –Vegetation stress assessment

6. Application of cascade of models Air temperature (at 2 m) forecast using WRF model. Forecast is valid at 2007-07-23 06:00 UTC Noah model simulations. Monthly average of soil moisture (0-10 cm) in August 2007 C Example of drought indicator: LST Evolution of EVI in 2006 & 2007 vegetation seasons. Drought affected territories are highlighted by red rectangle Drought in 2007 1,4 106 ha - destroyed 8,5 106 ha - damaged $100 million losses disaster of national level