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A Synthesis of Community Data and A Synthesis of Community Data and Modeling for Advancing River Basin Modeling for Advancing River Basin Science: The Evolving Susquehanna Science: The Evolving Susquehanna

River Basin ExperimentRiver Basin Experiment

Proposed Project Schedule: 12/1/06-11/30/08Proposed Project Schedule: 12/1/06-11/30/08

PI’s: Chris Duffy, Patrick Reed, and Kevin DresslerPI’s: Chris Duffy, Patrick Reed, and Kevin Dressler

The Pennsylvania State UniversityThe Pennsylvania State University

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Project Goal (1): Characterizing the Active ZoneProject Goal (1): Characterizing the Active Zone

““ACTIVE ZONE” Hypothesis:ACTIVE ZONE” Hypothesis:– Local watershed control volumeLocal watershed control volume– 3 partitions3 partitions

1) Land surf to atm1) Land surf to atm 2) Transition zone (2) Transition zone (near surface near surface

processes in canopy, root zone, processes in canopy, root zone, etcetc).).

3) Regolith from land surface to 3) Regolith from land surface to subsurface boundary layer (SBLsubsurface boundary layer (SBL))

– SBL analogous to atmSBL analogous to atm Effective depth (major unknown)Effective depth (major unknown) Feels surface water/energy fluxesFeels surface water/energy fluxes Operates at relevant time-scalesOperates at relevant time-scales

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Project Goal (2): Unification of Modeling, Project Goal (2): Unification of Modeling, Digital Data, and ExperimentationDigital Data, and Experimentation

Observatory Network Design Needs:Observatory Network Design Needs:– Must confront the tradeoffs between economic constraints, Must confront the tradeoffs between economic constraints,

performance objectives, and scientific knowledge gapsperformance objectives, and scientific knowledge gaps– Gap analysis requires the unification ofGap analysis requires the unification of

Multi-scale predictive modelingMulti-scale predictive modeling Digital data resourcesDigital data resources Innovative data collection strategiesInnovative data collection strategies

We are seeking to unify several existing effortsWe are seeking to unify several existing efforts– PIHMPIHM– SRB GeodatabaseSRB Geodatabase– Real-Time Hydrologic Monitoring Network (RTH_Net)Real-Time Hydrologic Monitoring Network (RTH_Net)

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Major Research ComponentsMajor Research Components

Penn State Integrated Hydrologic ModelPenn State Integrated Hydrologic Model– Finite volume, irregular mesh simulationFinite volume, irregular mesh simulation– Fully coupled process formulationFully coupled process formulation– Developed for platform independence and open sourceDeveloped for platform independence and open source

SRB GeodatabaseSRB Geodatabase– Finalized ESRI Geodatabase for entire basinFinalized ESRI Geodatabase for entire basin– Soils, DEM, land cover, vegetation, etc.Soils, DEM, land cover, vegetation, etc.– Will provide FTP access in the near termWill provide FTP access in the near term

Real-Time Hydrologic Monitoring Network (RTH_Net)Real-Time Hydrologic Monitoring Network (RTH_Net)– Exploring real-time “Active Zone” experimentationExploring real-time “Active Zone” experimentation– Developing real-time multi-state water cycle observationsDeveloping real-time multi-state water cycle observations