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Variable Infiltration Capacity (VIC) Hydrologic Model – Implementing in BC Watersheds

Variable Infiltration Capacity (VIC) Hydrologic Model – Implementing in BC Watersheds. Katrina E. Bennett, Pacific Climate Impacts Consortium Markus Schnorbus Arelia Werner Daniel Caya David R. Rodenhuis University of Alaska Fairbanks, 30 October, 2009.

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Variable Infiltration Capacity (VIC) Hydrologic Model – Implementing in BC Watersheds

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  1. Variable Infiltration Capacity (VIC) Hydrologic Model – Implementing in BC Watersheds Katrina E. Bennett, Pacific Climate Impacts Consortium Markus Schnorbus Arelia Werner Daniel Caya David R. Rodenhuis University of Alaska Fairbanks, 30 October, 2009 Recent accomplishments, challenges, and future directions

  2. What is PCIC? • Vision: …to bridge the gap between climate research and climate applications and make practical information available to government, industry, and the public. • Mission: to quantify the impacts of climate change and variability on the physical environment in Pacific North America.

  3. PCIC Hydrology Theme • BC Hydro driven (2010) • Four main projects • Climate Overview • Hydrologic Modelling • Regional Climate Modelling • Synthesis • Study of three major watersheds and one small coastal watershed in British Columbia using the VIC hydrologic model • Impacts of climate change on water resources/reservoir inflows

  4. How to estimate future hydrology GHG Emission Scenarios STAT RCM RCM RCM RCM Hydro-model - Bias Delta + Obs. Hydromodel Hydro-model Hydro-model Hydro-model Future Hydrological Regime Coupled Global Climate Model

  5. VIC Hydrologic Model • Macro-scale hydrologic model • Model runs for 1 grid cell at a time, calculates fluxes • No horizontal transfer of flow • Model resolves fluxes at a daily (wb mode) or sub-daily time step (eb mode)

  6. Bias Corrected statistical Downscaling

  7. Fraser River Basin

  8. 2080 Runoff Anomaly: Ingenika R. Peace River Basin DJF cgA1B cgA2 cgB1 ecA1B gfA2 haA1B B1 A1B A2

  9. Campbell River Basin BI 0.01 1.e-5 Ds 1.0 1.e-5 Ws 1.0 0.05 D2 0.3 0.3 DSMAX 30.0 0.1 PADJ 1.3 0.7

  10. Columbia River Basin • Just starting work on Columbia • Glaciers the biggest issue • Complete similar to Peace and Campbell • Continue with validation of model outputs

  11. Directions for PCIC • Hydrologic impacts of changing glacier mass balance • Improved validation of snow process modelling at regional scales • Challenges of downscaling to high elevation, poorly monitored watersheds in BC

  12. Regional Climate Modelling • Dynamical downscaling • Running RCM at 15 km • Zhang (PCIC) + Caya Music, Braun (Ouranos)

  13. Additional Materials

  14. Peace RB (at Taylor)  EVAP  PRECIP.  SWE  RUNOFF

  15. Columbia RB  EVAP  PRECIP.  PRECIP.  SWE  RUNOFF

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