NWS Calibration Workshop, LMRFC March, 2009                                  slide -
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Sacramento Model Calibration PowerPoint PPT Presentation


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Goals Unbiased reproduction of historical conditions Parameters that cause model components to mimic the hydrologic processes they were designed to represent Ability to extrapolate beyond conditions encountered in the historical record Strategy

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Sacramento Model Calibration

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Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 1


Sacramento model calibration

Goals

Unbiased reproduction of historical conditions

Parameters that cause model components to mimic the hydrologic processes they were designed to represent

Ability to extrapolate beyond conditions encountered in the historical record

Strategy

Must account for the physics of the model and how each portion of the hydrograph was intended to be modeled

Must understand the structure of the model

Sacramento Model Calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 2


Conceptual representation of sac sma

Conceptual Representation of SAC-SMA

NWS Calibration Workshop, LMRFC March, 2009 slide - 3


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 4


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 5


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 6


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 7


Sacramento model calibration

(each Dt)

NWS Calibration Workshop, LMRFC March, 2009 slide - 8


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 9


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 10


Sacramento model percolation

Sacramento Model - Percolation

  • Function of two forces:

  • Lower Zone Dryness (Capillary Suction Force)

  • Lower Zone Deficiency Ratio (LZDEFR)

  • Upper Zone Free Water Wetness (Gravity Force)

NWS Calibration Workshop, LMRFC March, 2009 slide - 11


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 12


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 13


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 14


Sacramento model calibration

Why no

percolation

here?

When is

percolation at

the max rate?

NWS Calibration Workshop, LMRFC March, 2009 slide - 15


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 16


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 17


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 18


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 19


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 20


Sacramento model calibration

Direct RO = UZTW Excess Fracdir ADIMP

NWS Calibration Workshop, LMRFC March, 2009 slide - 21


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 22


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 23


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 24


Sacramento model calibration

LZTWC

NWS Calibration Workshop, LMRFC March, 2009 slide - 25


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 26


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 27


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 28


Sacramento model calibration

NWS Calibration Workshop, LMRFC March, 2009 slide - 29


Sacramento model calibration

Dry areas: evapotranspiration assumes ‘connection’ between

upper and lower zones

NWS Calibration Workshop, LMRFC March, 2009 slide - 30


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