New ROMS configuration for Southern Californi 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 - use of UCLA ROMS (were IRD-ROMS-AGRIF) better hydrodynamic kernel, robust KPP, better MPI - more frequent boundary update (was 30 days → 2 hours) - inclusion of surface gravity waves - utility of WRF (was MM5) and SWAN
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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,...) - PowerPoint PPT Presentation
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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
Newest quadrupleNested ROMS configuration
L1 (5 km)
L2 (1 km)L2 (1 km)
L3 (250 m)
L3 (250 m) L4 (75 m) L4 (75 m)
L3 (250 m) runs(Aug. - Nov., 2006)
USWL3 250 m, z = 0 m
USWL3 250 m, z = -100 m
USWL3 250 m, z = -500 m
Effects of surface waves(subtidal EKE)
w/o wave
w/ wave
difference
Conservative Wave Effects: Overall Thermocline Deepening and Altering Upper Mean Circulation
with WEC (with WEC) – (no WEC)
mean mixed-layer depth(KPP hbl)
mean stream function(upper layer > -25 m)
x 103 (m2/s)
(m)
with WEC (with WEC) – (no WEC)
~15 %
~15 %
Vortex force vs. Stokes-Coriolis effect
- mean advection of eddies (JSC : Stokes-Coriolis force)- eddy-wave interaction (JVF : vortex force) --> exceeds JSC
~ <JVF>/<JSC>Ro=
L4 (75 m) runs(Aug. - Nov., 2006)
HTP 1-/5-mile outfalls
mean depth-integrated passive tracer concentration