Update on EcoOBM (Officer Box Model, for Physical Exchanges) and Translation to Criteria- Relevant Metrics Mark Brush CHRP 2012 Managers’ Workshop.

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Presentation transcript:

Update on EcoOBM (Officer Box Model, for Physical Exchanges) and Translation to Criteria- Relevant Metrics Mark Brush CHRP 2012 Managers’ Workshop

Officer Box Model: exchanges = f (freshwater, salinity) Fast run times Exchanges independent of ROMS Enables long term runs: gauged rivers Ungauged area extrapolated WWTFs PPT and Evaporation

InsomniacsNuShuttle + Buoys + Box Model: Exchanges = f (freshwater, salinity)

EcoOBM: Exchanges Compared to ROMS Rogers (2008) vs. 3D ROMS 2D box model Destination Box Fraction of Water Box Model ROMS Source Box 2006

EcoOBM: Surface Layer Chl-a mg m -3

EcoOBM: Phyto NPP g C m -2 d -1

EcoOBM: Bottom DO g m -3

Bottom O 2 Standard Run 50% Load Reduction Criterion: 40 ug/l30 ug/l20 ug/l Std Run % Load % Chance of Violations: Stochastic Simulation

Mean DO Minimum DO % Non- Compliance 10.7 ± ± ± ± ± ± ± ± Empirical Linkages to Assess State Criteria: Temporal Variability Buoy Data

Empirical Linkages to Assess State Criteria: Spatial Variability Insomniacs Data

CHRP II Funding  Add for a decade-long model run ( )  Compare OBM and ROMS exchanges for 2007+(currently 2006 only)  Develop functions for salinity and pycnocline depth vs. physical forcing (i.e. FW loading); add variable hypsography  Scenario runs in collaboration with RI DEM  Online hosting of EcoOBM

CHRP II Funding + selected runs in Greenwich Bay model to assess role of macroalgae in hypoxia

Current EcoOBM Applications Proposal pending: Bush/Gundpowder Rivers, MD Neuse River, NC Pensacola/Escambia Bays, FL Lake dissertation chapter: Narr Bay vs. York River vs. New River (including MPB)

Online Model Hosting Capability has been developed:

Online Model Hosting Capability has been developed:

Online Model Hosting Preliminary EcoOBM version: