Overview of Downscaling Approach. Hybrid Delta Downscaling Method Performed for each VIC grid cell: Hist. Daily Timeseries Hist. Monthly Timeseries Historic.

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Presentation transcript:

Overview of Downscaling Approach

Hybrid Delta Downscaling Method Performed for each VIC grid cell: Hist. Daily Timeseries Hist. Monthly Timeseries Historic Monthly CDF Bias Corrected Future Monthly CDF Projected Daily Timeseries yr window “Base Case”

WRF Daily Downscaling Method WRF output is first regridded to 1/16 th degree Then, for each VIC grid cell: WRF Daily Time Series WRF Daily CDF Historical VIC Daily CDF Bias Corrected Daily Time Series The storm size distribution and time series behavior of the simulations comes directly from the daily WRF simulations.

Snohomish River Near Monroe, WA

Testing

Monthly Streamflow

Precipitation Extremes

Temperature Extremes

Resolve issues related to mapping of extremes (in progress) Create a “Raw WRF” product (no bias correction) Downscale reanalysis run and compare to ECHAM5 historical runs (free-running GCM vs. reanalysis intercomparison) Downscale additional GCM scenarios. Remaining Downscaling Tasks

Preliminary Flood Results for Selected Watersheds

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