19 Aug, 2003, HYCOM Washington, DC South Atlantic Bight Limited Area Model Brian Blanton, Cisco Werner, Harvey Seim Dan Lynch a consumer of IC’s/BC’s from.

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Presentation transcript:

19 Aug, 2003, HYCOM Washington, DC South Atlantic Bight Limited Area Model Brian Blanton, Cisco Werner, Harvey Seim Dan Lynch a consumer of IC’s/BC’s from HYCOM Thayer School of Engineering Dartmouth College

19 Aug, 2003, HYCOM Washington, DC UNC’s South Atlantic Bight Limited Area Model NCEP Eta 12km Remote BC’s ADCIRC, HYCOM Limited Area Model Data Assimilation Loop (Quoddy/Casco FEM) Gather OBS ADCP, Pressure, CODAR Web Publish NOWCAST FORECAST Initialization Climatology HYCOM/GODAE

19 Aug, 2003, HYCOM Washington, DC Limited Area Model High-res finite element, Baroclinic (Quoddy) Assimilation of Vbar, water level (adjoint of Quoddy) Real-time forecasting of coastal ocean state Need IC’s and OBC’s for T,S and “Remote” water level for Limited area region Coastal Detail

19 Aug, 2003, HYCOM Washington, DC SABLAM Observations East Coast Domain for Tidal/Wind-Driven BCs for Limited-Area Mesh Nested SABLAM Mesh for Hindcast/Forecast System Obs. Locations: Water Level ADCP NC SC GA FL 3000m 1000m 200m 50m 25m

19 Aug, 2003, HYCOM Washington, DC SABLAM Operational Example Dec 2002 Strong Southward Winds Assim of WL from Ft. PL, St Sim Assim of Vbar from R2, R6 Prior Posterior Post-Prior Weak poleward flow missing in Prior Cross-shelf slope Is this the G.S.? Can Hycom Compensate

19 Aug, 2003, HYCOM Washington, DC HYCOM Transects Blake Plateau 29N 31N 33N

19 Aug, 2003, HYCOM Washington, DC “Coupling” to HYCOM in SAB Technical/Procedural Questions: –Mapping HYCOM TS to regional grids; very different scales –Vertical grid, shelfbreak –Frequency of HYCOM nowcasts –Impact on assimilation system Scientific Questions: –Low-freq sealevel variability as related to GS transport, a la Blaha, Sturges, e.g. –Mid-shelf TS comparisons to SABSOON towers –Charleston Bump Dynamics Deflection at Charleston Bump

19 Aug, 2003, HYCOM Washington, DC THE END

19 Aug, 2003, HYCOM Washington, DC

19 Aug, 2003, HYCOM Washington, DC HYCOM Mixed Layer Temp, UVbar Deflection at Charleston Bump SABLAM FEM Boundary 10 Feb ‘03

19 Aug, 2003, HYCOM Washington, DC

19 Aug, 2003, HYCOM Washington, DC ADCP Water Level