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New ROMS configuration for Southern California Bight

New ROMS configuration for Southern California Bight. Descendant of the previous UCLA configurations (cf., Marchesiello et al. 2003; Dong at al., 2009) Improved from the previous SCB 1-km modeling - higher resolutions (L1: 20 km → 5 km, L2: 6 km → 1 km, L3: 1 km → 250 m,...)

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New ROMS configuration for Southern California Bight

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  1. New ROMS configuration for Southern California Bight Descendant of the previous UCLA configurations (cf., Marchesiello et al. 2003; Dong at al., 2009) Improved from the previous SCB 1-km modeling - higher resolutions (L1: 20 km → 5 km, L2: 6 km → 1 km, L3: 1 km → 250 m,...) - use of UCLA ROMS (were IRD-ROMS-AGRIF) better hydrodynamic kernel, robust KPP, better MPI scaling,... - more frequent boundary update (was 30 days → 2 hours) - inclusion of surface gravity waves - utility of WRF (was MM5) and SWAN

  2. Newest quadruple Nested ROMS configuration L1 (5 km) L3 (250 m) L2 (1 km) L2 (1 km) L4 (75 m) L3 (250 m) L4 (75 m)

  3. L3 (250 m) runs (Aug. - Nov., 2006)

  4. USWL3 250 m, z = 0 m

  5. USWL3 250 m, z = -100 m

  6. USWL3 250 m, z = -500 m

  7. Effects of surface waves (subtidal EKE) w/o wave w/ wave difference

  8. Conservative Wave Effects: Overall Thermocline Deepening and Altering Upper Mean Circulation with WEC (with WEC) –(no WEC)‏ (m) mean mixed-layer depth (KPP hbl)‏ ~15 % with WEC (with WEC) –(no WEC)‏ mean stream function (upper layer > -25 m)‏ ~15 % x 103 (m2/s)

  9. Vortex force vs‏. Stokes-Coriolis effect Ro= ~ <JVF>/<JSC> - mean advection of eddies (JSC : Stokes-Coriolis force)‏ - eddy-wave interaction (JVF : vortex force) --> exceeds JSC

  10. L4 (75 m) runs (Aug. - Nov., 2006) HTP 1-/5-mile outfalls

  11. mean depth-integrated passive tracer concentration

  12. mean tracer concentration along HTP transect

  13. mean velocity along HTP transect

  14. Mean mixed layer depth (from KPP)

  15. Hovmoller plots of depth-averaged tracer concentration

  16. Alongshore profiles of depth-averaged tracer concentration at the shoreline

  17. Time series of depth-averaged tracer concentration at the shoreline at selected locations.

  18. Single-point PDF of depth-averaged passive tracer concentrations at the shore

  19. PSD of depth-averaged passive tracer concentrations at the shoreline

  20. SSS

  21. Hovmoller plots of shoreline SSS

  22. Mean surface normalized relative vorticity and TKE (all frequencies)

  23. bandpass-filtered surface kinetic energy high frq. (< 8h) semi-diurnal diurnal sub-tidal (> 36h)

  24. L5 (20 m) test run (7 days in Nov., 2006)

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