A COUPLED ATMOSPHERE-OCEAN MODELING SYSTEM FOR INVESTIGATING THE EXCEPTIONAL WINTER 2012 CONDITIONS...
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Transcript of A COUPLED ATMOSPHERE-OCEAN MODELING SYSTEM FOR INVESTIGATING THE EXCEPTIONAL WINTER 2012 CONDITIONS...
![Page 1: A COUPLED ATMOSPHERE-OCEAN MODELING SYSTEM FOR INVESTIGATING THE EXCEPTIONAL WINTER 2012 CONDITIONS IN THE NORTHERN ADRIATIC SEA b Antonio Ricchi (Univ.](https://reader034.fdocuments.us/reader034/viewer/2022051316/5697bfdf1a28abf838cb265f/html5/thumbnails/1.jpg)
A COUPLED ATMOSPHERE-OCEAN MODELING SYSTEM FOR INVESTIGATING THE EXCEPTIONAL WINTER 2012 CONDITIONS IN THE NORTHERN
ADRIATIC SEA
b
Antonio Ricchi (Univ. “Parthenope”, Naples, Italy)
Sandro Carniel, Davide Bonaldo, Alvise Benetazzo, Andrea Bergamasco, Mauro Sclavo, F.M. Falcieri (CNR-ISMAR, Venice, Italy)
M.M Miglietta (CNR-ISAC, Lecce, Italy)
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Bologna
Florence
Ancona
Trieste
Trieste
Venice
Rimini Inland
Venice
Bologna
Genova
Romagna coast
Cold wave in N Italy
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North Adriatic Sea
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COAWST configuration
SWAN setup:DT 1200 sec1 km res
ROMS setup• 30 levels• Dt 5 sec• 1 km resBC 3 hrs (MFSTEP model)Tide
WRF setup• 7 km res.• 60 vertical levels• DT 36 sec.• 1° level at 6 mtDataset USGS 1’x1’Landuse : USGS 1’x1’
1. CU : Kain2. MP : Lin et Al3. PBL : MYNN2.54. Surface S.: MJY5. Soil : Noah6. RW : RRTMG7. LW : RRTMG
INIT & BC : GFS-FNL 1°x1°SST : RTG_SST
ROMS/SWAN
WRF
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Case description
WRF-StandAlone runs:
1. A_GFS: SST to GFS-SKIN
2. A_STA: SST to RTG_SST (1st timestep no evolution)
3. A_OML: SST to RTG_SST and OML for evolution
4. A_DIN: Dynamic update of SST, with RTG_SST every 6 hours
Coupled runs:
5. AO: Atmosphere <–> Ocean Coupling
6. AOW: Atmosphere <–> Ocean <–> Wave Coupling
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Parameterization for A-O and A-O-W
#define ROMS_MODEL
#undef SWAN_MODEL
#define WRF_MODEL
#ifdef WRF_MODEL
# define ATM2OCN_FLUXES
# define ANA_SSFLUX
endif
#define ROMS_MODEL
#define SWAN_MODEL
#define WRF_MODEL
# define MCT_INTERP_OC2AT
# define MCT_INTERP_WV2AT
#define WEC_VF
#define WDISS_WAVEMOD
#define UV_KIRBY
#define COARE_TAYLOR_YELLAND
#ifdef WRF_MODEL
# define ATM2OCN_FLUXES
# define ANA_SSFLUX
#undef BULK_FLUXES
endif
COUPLING WAVE-CURR.
Wave in WRF
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Comparing model performances
Heat Fluxes have been identified as a main source of uncertainty (Mihanovich et al. 2013)
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Net Heat Fluxes patterns
WORST S.A
BEST S.A
A.O A.O.W
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What COAWST made possible, and some open issues
Unprecedented (in the Adriatic) fully coupled Atmosphere-Ocean-Waves application
Significantly better atmosphere model performances with a high resolution, dynamic SST Atmosphere-Ocean interaction reduces atmosphere model drift over time.
Wave-Atmosphere interaction improves SST distribution BUT IT IS IMPORTANT TO UNDERSTAND PHYSICAL
Different masking between models gives rise to some phenomena involving ocean dynamics
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Concerning grid issues