1. Relationship of Downscaling to CSES Integration

2. Downscaling Methods used in CSES Statistical  Empirically relate large-scale patterns to mesoscale patterns  Fast but lack details  Applied to several IPCC models and scenarios  Widmann Bretherton Salathé (2003)  Wood et al. Physical  Nested mesoscale model  Computationally intensive but provide all details  PNW Regional model based on MM5  Applied to NCAR-DOE PCM Simulation

3. Downscaling Methods Statistical Downscaling

4. Downscaling Methods Regional Climate Model Based on MM5 real-time system 135-45-15 Nested Grids Nudging on outermost grid Plan to use NOAH-LSM with modifications to deep soil

5. Applications Hydrology-Fish-Forests-Coasts  Statistical downscaling method applied to Streamflow simulations  Regional Model will be applied to streamflow allowing direct comparison among several methods  Links to forests, fish, and coasts Air quality  Two collaborative EPA/STAR projects Seasonal hydrologic forecasting