Difference between revisions of "Model Coupling SANDY"

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<div class="title">California Current System (WC12)</div>__NOTOC__
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<div class="title">Hurricane Sandy (SANDY)</div>__NOTOC__
  
 
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Latest revision as of 14:26, 11 September 2019

Hurricane Sandy (SANDY)
Model Coupling TOC
  1. Introduction  
  2. Earth System Modeling Framework (ESMF/NUOPC)  
  3. Model Coupling Toolkit (MCT)  
  4. California Current System (WC12)  
  5. Hurricane Sandy (SANDY)  

DATA-WRF-ROMS Coupled Application

  • SANDY COAWST application 87x65x65 with dx~18 km and dy~24 km (coarser), and 116x86x16 with dx~6 km and dy~8 km (finer)
  • WRF COAWST application 85x82x48 with dx=dy=30 km (coarser), and 100x100x48 with dx=dy=15 km (finer)
  • Time stepping: WRF 180 and 60 s, ROMS 30 and 15 s
  • Coupling Simulation E03: Using ROMS bulk fluxes parameterization
    • Sequential and semi-implicit coupling, No Nesting, ESMF/NUOPC library
    • Non nested WRF, just coarser grid
    • Coupling interval: 180 s (every 6 ROMS timesteps), WRF exports instantaneous fields
    • WRF imports SST from DATA and ROMS components
    • DATA component reads SST from HyCOM 1/12 dataset, 4500x3298
    • ROMS activates BULK_FLUXES, EMINUSP, and LONGWAVE_OUT
    • ROMS imports dLWrad, SWrad, Pair, Tair, Qair, rain, Uwind, and Vwind
  • Coupling Simulation E02: Using WRF surface fluxes parameterization
    • Sequential and semi-implicit coupling, No Nesting, ESMF/NUOPC library
    • Non nested WRF, just coarser grid
    • Coupling interval: 180 s (every 6 ROMS timesteps), WRF exports instantaneous fields
    • WRF imports SST from DATA and ROMS components
    • DATA component reads SST from HyCOM 1/12 dataset, 4500x3298
    • ROMS deactivates BULK_FLUXES, EMINUSP, and LONGWAVE_OUT
    • ROMS imports SWrad, Pair, shflux, swflux, sustr, and svstr
  • Coupling Simulation M01: Using WRF surface fluxes parameterization
    • Concurrent nested coupling, COAWST MCT library
    • Coupling interval: 180 s, WRF exports instantaneous fields
    • ROMS activates ATM2OCN_FLUXES and EMINUSP


Sandy WRF Terrain Height.png|Sandy ROMS Bathymetry.png

Figure 1: WRF terrain height (left) and ROMS bathymetry (right)


Hurricane Sandy Storm Track
Sandy Storm Track.png
Source: NOAA's National Weather Service

Figure 2: Hurricane Sandy storm track


HyCOM Global SST 2012-10-28.png|Merged HyCOM-ROMS SST 2012-10-28.png

Figure 3: WRF sea-surface temperature inputs from HyCOM (left) and merged HyCOM-ROMS (right) for October 28, 2012.


DATA-WRF-ROMS
No Nesting
DATA-WRF-ROMS
No Nesting
WRF-ROMS
Nested
ESMF Coupling: 180s
BULK_FLUXES
ESMF Coupling: 180s
ATM_SBL
ESMF Coupling: 180s
ATM SBL

Animation 1: Surface Shortwave Radiation Comparison (W/m2)


DATA-WRF-ROMS
No Nesting
DATA-WRF-ROMS
No Nesting
WRF-ROMS
Nested
ESMF Coupling: 180s
BULK_FLUXES
ESMF Coupling: 180s
ATM_SBL
ESMF Coupling: 180s
ATM SBL

Animation 2: Surface Net Heat Flux Comparison (W/m2)


DATA-WRF-ROMS
No Nesting
DATA-WRF-ROMS
No Nesting
WRF-ROMS
Nested
ESMF Coupling: 180s
BULK_FLUXES
ESMF Coupling: 180s
ATM_SBL
ESMF Coupling: 180s
ATM SBL

Animation 3: Surface Temperature Comparison (°C)


DATA-WRF-ROMS
No Nesting
DATA-WRF-ROMS
No Nesting
WRF-ROMS
Nested
ESMF Coupling: 180s
BULK_FLUXES
ESMF Coupling: 180s
ATM_SBL
ESMF Coupling: 180s
ATM SBL

Animation 4: Surface Freshwater Flux Comparison (m/day): (E-P)*SSS


DATA-WRF-ROMS
No Nesting
DATA-WRF-ROMS
No Nesting
WRF-ROMS
Nested
ESMF Coupling: 180s
BULK_FLUXES
ESMF Coupling: 180s
ATM_SBL
ESMF Coupling: 180s
ATM SBL

Animation 5: Surface Salinity Comparison


DATA-WRF-ROMS
No Nesting
DATA-WRF-ROMS
No Nesting
WRF-ROMS
Nested
ESMF Coupling: 180s
BULK_FLUXES
ESMF Coupling: 180s
ATM_SBL
ESMF Coupling: 180s
ATM SBL

Animation 6: Free-Surface Comparison (m)


DATA-WRF-ROMS
No Nesting
DATA-WRF-ROMS
No Nesting
WRF-ROMS
Nested
ESMF Coupling: 180s
BULK_FLUXES
ESMF Coupling: 180s
ATM_SBL
ESMF Coupling: 180s
ATM SBL

Animation 7: Surface Current Comparison (m/s)


DATA-WRF-ROMS
No Nesting
DATA-WRF-ROMS
No Nesting
WRF-ROMS
Nested
ESMF Coupling: 180s
BULK_FLUXES
ESMF Coupling: 180s
ATM_SBL
ESMF Coupling: 180s
ATM SBL

Animation 8: Surface Wind Stress Comparison (N/m2)


NASA GEOS-5 Global Atmosphere Model: Oct 26-31, 2012
Source: NASA Goddard

Animation 9: NASA GEOS-5 Global Atmosphere Model, October 26-31, 2012 Source: NASA Goddard


NASA GOES Satellites: Hurricane Sandy 23-31 October 2012
Source: NASA & NOAA with MODIS True-Color Map

Animation 10: NASA GOES Satellites: Hurricane Sandy October 23-31, 2012