TY - JOUR
T1 - A coupled circulation-wave model for numerical simulation of storm tides and waves
AU - Marsooli, Reza
AU - Orton, Philip M.
AU - Mellor, George
AU - Georgas, Nickitas
AU - Blumberg, Alan F.
N1 - Publisher Copyright:
© 2017 American Meteorological Society.
PY - 2017/7/1
Y1 - 2017/7/1
N2 - The Stevens Institute of Technology Estuarine and Coastal Ocean Model (sECOM) is coupled here with the Mellor-Donelan-Oey (MDO) wave model to simulate coastal flooding due to storm tides and waves. sECOM is the three-dimensional (3D) circulation model used in the New York Harbor Observing and Prediction System (NYHOPS). The MDO wave model is a computationally cost-effective spectral wave model suitable for coupling with 3D circulation models. The coupled sECOM-MDO model takes into account wave-current interactions through wave-enhanced water surface roughness and wind stress, wave-current bottom stress, and depth-dependent wave radiation stress. The model results are compared with existing laboratory measurements and the field data collected in New York-New Jersey (NY-NJ) harbor during Hurricane Sandy. Comparisons between the model results and laboratory measurements demonstrate the capabilities of the model to accurately simulate wave characteristics, wave-induced water elevation, and undertow current. The model results for Hurricane Sandy reveal the successful performance of sECOM-MDO in situations where high waves and storm tides coexist. The results indicate that the temporal maximum wave setup in NY-NJ harbor was 0.26 m. On the other hand, the contribution of wave setup to the peak storm tide was 0.13 m, a contribution of only 3.8%. It is found that the inclusion of wave radiation stress and wave-enhanced bottom friction in the circulation model can reduce the errors in the calculated storm tides. At the Battery (New York), for example, the root-mean-square error reduced from 0.17 to 0.12 m.
AB - The Stevens Institute of Technology Estuarine and Coastal Ocean Model (sECOM) is coupled here with the Mellor-Donelan-Oey (MDO) wave model to simulate coastal flooding due to storm tides and waves. sECOM is the three-dimensional (3D) circulation model used in the New York Harbor Observing and Prediction System (NYHOPS). The MDO wave model is a computationally cost-effective spectral wave model suitable for coupling with 3D circulation models. The coupled sECOM-MDO model takes into account wave-current interactions through wave-enhanced water surface roughness and wind stress, wave-current bottom stress, and depth-dependent wave radiation stress. The model results are compared with existing laboratory measurements and the field data collected in New York-New Jersey (NY-NJ) harbor during Hurricane Sandy. Comparisons between the model results and laboratory measurements demonstrate the capabilities of the model to accurately simulate wave characteristics, wave-induced water elevation, and undertow current. The model results for Hurricane Sandy reveal the successful performance of sECOM-MDO in situations where high waves and storm tides coexist. The results indicate that the temporal maximum wave setup in NY-NJ harbor was 0.26 m. On the other hand, the contribution of wave setup to the peak storm tide was 0.13 m, a contribution of only 3.8%. It is found that the inclusion of wave radiation stress and wave-enhanced bottom friction in the circulation model can reduce the errors in the calculated storm tides. At the Battery (New York), for example, the root-mean-square error reduced from 0.17 to 0.12 m.
KW - Flood events
KW - Numerical analysis/modeling
KW - Ocean models
KW - Oceanic
KW - Operational forecasting
KW - Storm surges
KW - Waves
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U2 - 10.1175/JTECH-D-17-0005.1
DO - 10.1175/JTECH-D-17-0005.1
M3 - Article
AN - SCOPUS:85025583130
SN - 0739-0572
VL - 34
SP - 1449
EP - 1467
JO - Journal of Atmospheric and Oceanic Technology
JF - Journal of Atmospheric and Oceanic Technology
IS - 7
ER -