Model Coupling WC12

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California Current System (WC12)

DATA-COAMPS-ROMS Coupled Application

  • WC12 application 184x179x42, mean resolution dx = 8.5 km and dy = 11.0 km
  • COAMPS application 201x204x60 with dx=dy=45 km (coarser), and 214x217x60 with dx=dy=15 km (finer)
  • Time stepping: COAMPS 60 s, ROMS 600 s
  • Coupling Simulation C01: Using ROMS bulk fluxes parameterization
  • Coupling Simulation C03: Using ROMS bulk fluxes parameterization
  • Coupling Simulation C04: Using COAMPS surface fluxes parameterization

Nested COAMPS-ROMS Coupling.png

Figure 1: COAMPS and ROMS Grids COAMPS-1: 45 km, COAMPS-2: 15 km, ROMS-1: 8.5x11 km


DATA Component Exported SST.png

COAMPS Component Imported Merged SST-dSST.png
ROMS Component Exported SST.png

Figure 2: Merged Sea Surface Temperature (K): COAMPS Import


DATA-COAMPS-ROMS
Non Nested
DATA-COAMPS-ROMS
Nested
DATA-COAMPS-ROMS
Nested
ESMF Coupling: 600s
BULK_FLUXES
ESMF Coupling: 600s
BULK_FLUXES
ESMF Coupling: 600s
ATM SBL

Animation 1: Surface Shortwave Radiation Flux (W/m2): Subtract 8 hours for PST


DATA-COAMPS-ROMS
Non Nested
DATA-COAMPS-ROMS
Nested
DATA-COAMPS-ROMS
Nested
ESMF Coupling: 600s
BULK_FLUXES
ESMF Coupling: 600s
BULK_FLUXES
ESMF Coupling: 600s
ATM SBL

Animation 2: Coupled Net Surface Heat Flux (W/m2): Subtract 8 hours for PST


DATA-COAMPS-ROMS
Non Nested
DATA-COAMPS-ROMS
Nested
DATA-COAMPS-ROMS
Nested
ESMF Coupling: 600s
BULK_FLUXES
ESMF Coupling: 600s
BULK_FLUXES
ESMF Coupling: 600s
ATM SBL

Animation 3: Coupled Surface Temperature (°C): Subtract 8 hours for PST


DATA-COAMPS-ROMS
Non Nested
DATA-COAMPS-ROMS
Nested
DATA-COAMPS-ROMS
Nested
ESMF Coupling: 600s
BULK_FLUXES
ESMF Coupling: 600s
BULK_FLUXES
ESMF Coupling: 600s
ATM SBL

Animation 4: Coupled Surface Freshwater Flux (m/day): (E-P)*salt Subtract 8 hours for PST


DATA-COAMPS-ROMS
Non Nested
DATA-COAMPS-ROMS
Nested
DATA-COAMPS-ROMS
Nested
ESMF Coupling: 600s
BULK_FLUXES
ESMF Coupling: 600s
BULK_FLUXES
ESMF Coupling: 600s
ATM SBL

Animation 5: Coupled Surface Salinity: Subtract 8 hours for PST


DATA-COAMPS-ROMS
Non Nested
DATA-COAMPS-ROMS
Nested
DATA-COAMPS-ROMS
Nested
ESMF Coupling: 600s
BULK_FLUXES
ESMF Coupling: 600s
BULK_FLUXES
ESMF Coupling: 600s
ATM SBL

Animation 6: Coupled Surface Wind Stress (N/m2): Subtract 8 hours for PST


ROMS Solar swrad Flux BF.png ROMS Net lwrad Flux BF.png ROMS Net Lat Heat Flux BF.png ROMS Net Sens Heat Flux BF.png BULK_FLUXES
ROMS Solar swrad Flux COAMPS.png ROMS lwrad Flux COAMPS.png ROMS Sur Lat Heat Flux COAMPS.png ROMS Sur Sens Heat Flux COAMPS.png COAMPS

Figure 3: Heat Flux Components Analysis: Nested C03 and C04


BULK_FLUXES COAMPS BULK_FLUXES
minus
COAMPS
ROMS Sur Net Heat Flux BF.png ROMS Sur Net Heat Flux COAMPS.png ROMS Sur Net Heat Flux BF-COAMPS.png
11-Jan-2013 13:00:00 PST

Figure 4: Computed Surface Net Heat Flux (W/m2)


ROMS Evap Rate BF.png ROMS Sur Net Salt Flux BF.png ROMS Sur Salt BF.png ROMS Sur Net Fresh Flux BF.png
ROMS Rain Fall Rate BF.png ROMS Sur Net Salt Flux COAMPS.png ROMS Sur Salt COAMPS.png ROMS Sur Fresh Flux Diff BF-COAMPS.png

Figure 5: Freshwater Flux Analysis: Nested C03 and C04


BULK_FLUXES Non Nested BULK_FLUXES Nested ATM SBL Nested
ROMS zeta and Sur Wind Stream BF Non Nest.png ROMS zeta and Sur Wind Stream BF Nest.png ROMS zeta and Sur Wind Stream ATM Nest.png
11-Jan-2013 13:00:00 PST

Figure 6: Free-Surface (m) and Surface Wind Streamlines: C01, C03, C04

Coupled and Uncoupled Simulations Comparison


DATA-COAMPS-ROMS ERA5-ECMWF DATA ERA5-ECMWF DATA
ESMF Coupling: 600s
BULK_FLUXES
Uncoupled: hourly
BULK_FLUXES
Uncoupled: hourly
ATM SBL

Animation 7: Surface Shortwave Radiation Flux (W/m2): Subtract 8 hours for PST


DATA-COAMPS-ROMS ERA5-ECMWF DATA ERA5-ECMWF DATA
ESMF Coupling: 600s
BULK_FLUXES
Uncoupled: hourly
BULK_FLUXES
Uncoupled: hourly
ATM SBL

Animation 8: Coupled Net Surface Heat Flux (W/m2): Subtract 8 hours for PST


DATA-COAMPS-ROMS ERA5-ECMWF DATA ERA5-ECMWF DATA
ESMF Coupling: 600s
BULK_FLUXES
Uncoupled: hourly
BULK_FLUXES
Uncoupled: hourly
ATM SBL

Animation 9: Coupled Surface Temperature (°C): Subtract 8 hours for PST


DATA-COAMPS-ROMS ERA5-ECMWF DATA ERA5-ECMWF DATA
ESMF Coupling: 600s
BULK_FLUXES
Uncoupled: hourly
BULK_FLUXES
Uncoupled: hourly
ATM SBL

Animation 10: Coupled Surface Freshwater Flux (m/day): (E-P)*salt Subtract 8 hours for PST


DATA-COAMPS-ROMS ERA5-ECMWF DATA ERA5-ECMWF DATA
ESMF Coupling: 600s
BULK_FLUXES
Uncoupled: hourly
BULK_FLUXES
Uncoupled: hourly
ATM SBL

Animation 11: Coupled Surface Salinity Subtract 8 hours for PST


DATA-COAMPS-ROMS ERA5-ECMWF DATA ERA5-ECMWF DATA
ESMF Coupling: 600s
BULK_FLUXES
Uncoupled: hourly
BULK_FLUXES
Uncoupled: hourly
ATM SBL

Animation 12: Coupled Surface Wind Stress (N/m2): Subtract 8 hours for PST