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EWC+COPRI Seminar by Ali Abdolali: Advances in the Unstructured WAVEWATCH III within Earth System Modeling Framework

April 16, 2021 @ 12:50 pm - 1:40 pm

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Environmental, Water Resources, and Coastal Engineering + Coasts, Oceans, Ports and Rivers Institute Seminar Series

Virtual seminar link: https://ncsu.zoom.us/j/96156963811?pwd=QVRwSmlRZ1lqWm1xL0JVcG9RWC9Zdz09

Abstract: The recent advancements in the spectral wave model WAVEWATCH III (WW3) have extended its capability for large scale and nearshore applications. The domain decomposition parallelization with the optional implicit scheme makes WW3 a powerful tool to efficiently
resolve complex shorelines and high-gradient wave zones, incorporating dominant physics in complicated coastal zones such as wave breaking, wave-current interaction, bottom friction and scattering, wave-vegetation interaction and nonlinearity (Abdolali et al. 2020). These new capabilities allowed us to run WW3 on a suite of ensemble members on unstructured grids with very high nearshore resolutions for uncertainty analysis (Abdolali et al. 2021). The model is compatible with community-based coupling infrastructure (NEMS) to facilitate two-way coupling with ocean circulation models and hydrological models for simulating Hurricane storm surge and waves (Bakhtyar et al. 2020 and Moghimi et al. 2020). Here we present an overview of the recent advances in the WW3 model in terms of improvements in the nearshore physics and computational efficiency. A couple of real case applications on large-scale numerical domains with high-resolution coastal refinement during stormy conditions will be shown. A summary of model computational scalability will be given on various scales.

References:

Abdolali A., Roland, A., Van Der Westhuysen, A., Meixner, J., Chawla, A., Hesser, T., Smith, J.M. and M. Dutour Sikiric (2020), Large-scale Hurricane Modeling Using Domain Decomposition Parallelization and Implicit Scheme Implemented in WAVEWATCH III Wave Model, Coastal Engineering, 157, 103656, https://doi.org/10.1016/j.coastaleng.2020.103656

Ali Abdolali, Andre van der Westhuysen, Zaizhong Ma, Avichal Mehra, Aron Roland and Saeed Moghimi (2021) Evaluating the Accuracy and Uncertainty of Atmospheric and Wave Model Hindcasts During Severe Events Using Model Ensembles, Ocean Dynamics. https://doi.org/10.1007/s10236-020-01426-9

Bakhtyar, R., Maitaria, K., Velissariou, P., Trimble, B., Mashriqui, H., Moghimi, S., Abdolali, A., Van der Westhuysen, A.J., Ma, Z., Clark, E.P. and Flowers, T. (2020). A new 1D/2D Coupled Modeling Approach for a Riverine‐Estuarine System under Storm Events: Application to Delaware River Basin. Journal of Geophysical Research: Oceans, 125, e2019JC015822. https://doi.org/10.1029/2019JC015822

Moghimi, S.; Van der Westhuysen, A.; Abdolali, A.; Myers, E.; Vinogradov, S.; Ma, Z.; Liu, F.; Mehra, A.; Kurkowski, N. Development of an ESMF Based Flexible Coupling Application of ADCIRC and WAVEWATCH III for High Fidelity Coastal Inundation Studies. J. Mar. Sci. Eng. 2020, 8, 308. https://doi.org/10.3390/jmse8050308

 

Biography: Ali completed his Ph.D. and then was a Postdoctoral Research Associate at the University of Delaware, where he worked on wetland circulation and tsunamigenic induced acoustic-gravity waves in the open ocean and arctic zones. Ali has served as a scientist at NOAA since 2016. During 10 years of his experience, Ali has worked on Coastal Hazards (Tsunamis, Hurricanes & Storm Surges), Tsunami Early Warning Systems, Nearshore hydrodynamics (Coastal Morphodynamics & Wetland hydrodynamics), Elastic Earth – Compressible Ocean interaction, Climate Change, and Sea Level Rise, Compressible Fluids, Underwater Acoustics and Renewable Oceanic Wave Energy. His methodology for early detection of tsunamis via underwater acoustic signals attracted the media and scientific community and was published in prestigious journals like Nature and Journal of Fluid Mechanics. Currently, he is the lead of wave model development at NCEP and the code manager for WAVEWATCH III where he prepares the plans and strategies of future code developments. He is involved with the wave-surge coupling developments for the COASTAL Act and Alaska Coastal Ocean Forecast System (ALCOFS) projects and UFS Weather and GFSv16 developments.

Details

Date:
April 16, 2021
Time:
12:50 pm - 1:40 pm
Event Categories:
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