Models
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Links of Interest
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Current Projects

Tides and Storm Surge in the Indian Ocean and South China Sea

Project Sponsors:
Ocean, Atmosphere and Space Research Division, ONR

Collaborators: Andrew Kennedy, University of Notre Dame

Project Goal
: Develop a comprehensive high resolution model of barotropic tides and wind driven surge, circulation and wind waves in the Bay of Bengal and the Indian Ocean. Study intra-seasonal wind driven circulation and set-up patterns, in particular looking at advectively driven eddy structures on and adjacent to the shelf and other topographic features, taking advantage of the high resolution capabilities of the model. Our goal is to develop a better understanding of the regional tidal and wind/storm driven waves, surge, and currect physics.

NSF S12-SSI: Collaborative Research: STORM: A Scalable Toolkit for an Open Community Supporting Near Realtime High Resolution Coastal Modeling

Collaborators: Hartmut Kaiser, Robert Twilley, LSU; Richard Luettich, UNC: Clint Dawson, UT Austin

Project Goal: The aim of STORM is to broaden the ADCIRC coastal circulation and storm surge model from a successful, somewhat static coastal modeling tool that is tied to a single solution algorithm and MPI, to a dynamic computational platform that is comprised of multiple solution algorithms and is built on a transformational new parallelization scheme allowing us to scale to at least 256k compute cores. We expect this effort will shorten the time required to provide reliable forecast and improve our ability to provide highly resolved, accurate, and physically complete predictions on an unprecedented scale. Notre Dame's focus within the scope of this large project is to investigate how to include discontinuous Galerkin finite element algorithms, higher order methods, and hp adaptivity within the broader ADCIRC framework with the goal of achieving faster and more accurate solutions.

Project Documentation:
Michoski, C., C. Dawson, E.J. Kubatko, D. Wirasaet, S. Brus, J.J. Westerink, "A Comparison of Artificial Viscosity, Limiters, and Filters, for High Order Discontinuous Galerkin Solutions in Nonlinear Settings," Journal of Scientific Computing, DOI 10.1007/s10915-015-0027-2, 66, 1, 406-434, 2016.


Wirasaet, D., S.R. Brus, C.E. Michoski, E.J. Kubatko, J.J. Westerink, C. Dawson, "Artificial boundary layers in discontinuous Galerkin solutions to shallow water equations in channels," Journal of Computational Physics, 299, 579-612, 2015.

Wirasaet, D., E.J. Kubatko, C.E. Michoski, S. Tanaka, J.J. Westerink, C. Dawson, "Discontinuous Galerkin methods with nodal and hybrid modal/nodal triangular, quadrilateral, and polygonal elements for nonlinear shallow water flow," Computer Methods in Applied Mechanics and Engineering, 270, 113-149, doi:http://dx.doi.org/10.1016/j.cma.2013.11.006, 2014.


STORM Overview Poster

For more info see: 
http://storm.stellar-group.org/


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Wave and Surge Modeling and Operational Forecasting in Puerto Rico

Project Sponsors: The U.S. Department of Homeland Security Science and Technology Directorate Coastal Hazards Center of Excellence, The University of North Carolina at Chapel Hill

Collaborators: Julio Morell, CariCOOS; Miguel Canals, Aurelio Mercado, University of Puerto Rico, Mayaguez

Project Goal: Wave and still water level response to tropical cyclones for deep water islands such as Puerto Rico is very different from the response along the coasts that lie adjacent to broad continental shelves. Significant data collection and model development efforts have been focused intensively onAtlantic and Gulf of Mexico coasts, but have only been recently initiated for Caribbean islands. This project is developing a large domain SWAN+ADCIRC model for Puerto Rico focused on simulating tides, wind waves, and wind driven circulation and water levels. The base of the model will be the EC2001 domain with added resolution to better accommodate the complexities of the West Indies and other regional island chains and provide sufficient resolution to accurately compute non-phase resolving wave energy spectra. Mesh resolution has been refined down to 20-200 m along the Puerto Rican coast and in critical areas such as San Juan Harbor. This high level of reolution will also cover the extensive coastal reef systems that exist regionally sothat wave fields and wave dissipation, depth limited breaking and the wave-current interactions can be more accurately represented.

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NSF Collaborative Research: Data-Driven Inverse Sensitivity Analysis for Predictive Coastal Ocean Modeling

Project Sponsors: National Science Foundation

Collaborators: Donald Estep, Troy Butler, Colorado State University; Clint Dawson, University of Texas at Austin

Project Goal: The project goal is to solve stochastic inverse problems by applying a measure-theoretic methodology in order to quantify the uncertainty of parameters such as bathymetry and bottom friction in the Advanced Circulation (ADCIRC) model with specific application to coastal ateas of the Gulf of Mexico. Furthermore, we are investigating improvements in the efficiency and accuracy of the ADCIRC forward model for shallow water flows through the use of high order discontinuous Galerkin solutions. This has the potential to dramatically increase the efficiency of solving the stochastic inverse problem due to the large number of forward model simulations involved.

Project Documentation:
Butler, T., L. Graham, D. Estep, C. Dawson, J.J. Westerink, "Definition and solution of a stochastic inverse problem for the Manning's n parameter field in hydrodynamic models," Advances in Water Resources, 78, 60-79, 2015.

Butler, T., D. Estep, S. Tavener, C. Dawson, J.J. Westerink, "A Measure-Theoretic Computational Method for Inverse Sensitivity Problems III: Multiple Quantities of Interest," SIAM/ASA Journal of Uncertainty Quantification2, 174-202, 2014.

T. Butler, D. Estep, S. Tavener, C. Dawson, J. Westerink, "A measure-theoretic computational method for inverse sensitivity problems III: Multiple quantities of interest", Journal of Uncertainty Quantification, In review, 2013

D. Wirasaet, E. Kubatko, C. Michoski, S. Tanaka, J. Westerink, C. Dawson, Discontinuous Galerkin methods with nodal and hybrid nodal/modal triangular quadrilateral, and polygonal elements for nonlinear shallow water flows, Computer Methods in Applied Mechanics and Engineering, 270, 113-149, 201

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NOAA NRDA (Natural Resource Damage Assessment) ADCIRC Circulation Modeling: Deepwater Horizon Oil Spill

Project Sponsors: NOAA Fisheries

Collaborators: John Quinlan, NOAA Fisheries

Project Goal: Model development and providing hindcasts of the oceanic/estuarine hydrodynamic circulation and transport for the Natural Resources Damage Assessment (NRDA) for the Deepwater Horizon Incident in the Gulf of Mexico. Understanding the impact of winds, wave radiation stress, tides and advection on currents. Tracking dolphine and turtle carcasses. Examining the fate of oyster spat.

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A High Resolution Integrally Coupled-Ice, Tide, Wind-Wave and Storm Surge Model for Western Alaska

Project Sponsors: Western Alaska Landscape Conservation Cooperative, NCEP, NDS

Collaborators: Andre Van der Westhuysen, Hendrik Tolman, Bob Grumbine, NCEP; Jesse Feyen, NOS

Project Goal: The western coastline of Alaska contains over 10,000 km of diverse topography that is highly susceptible to large coastal storms which cause coastal erosion and flooding that have severely negative impacts on environmental and commercial efforts. This large domain SWAN/WWIII+ADCIRC modelwith high resolution along the western coastline will be used to assess the vulnerability of the region to coastal storms incurrent conditions as well as under reduced ice cover.

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A Puerto Rico/U.S. Virgin islands, Surge and Wave Inundation Model Testbed

Project Sponsors: IOOS, NOAA

Collaborators: Andre Van der Westhuysen, NCEP NOAA; Andrew Kennedy, ND; Julio Morell, CariCOOS, Jane Smith, USACE

Project Goal: Deep ocean islands are vulnerable to hurrican driven storm surges and wind waves. The physics of these processes on deep ocean islands are very different from that on wide continental shelves. In particular intricate reef systems and large onshore wave runup complicate wave dynamics. A new high resolution computational model properly represents the irregular coasts and steep underwater slopes of Puerto Rico and the U.S. Virgin Islands, while the data collected over a reef area under winter swell conditions provides new data to advance the understanding of big waves breaking on such environments. The combination of both methodologies is crucial to determine and predict the coastal storm surge and wave hazards on islands. Forecasting water levels and waves during storms and hurricanes through the SWAN+ADCIRC wave and circulation model and phase resolving Boussinesq models. Better understanding of breaking of big waves during natural, non-laboratory events. Application of near shore wave models for coastal and harbor safety.

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Model Development for Western North Pacific

Project Sponsors: FM Global

Collaborators: Shangyao Nong, Hosam Ali, FM Global

Project Goal: This project aims to develop a high resolution model coupling atmospheric, wind, wave and tidal surge events in the South China Seas. Although sectors of high resolution are currently limited to Hong Kong, Shanghai, and South Korea, the validation study is expanding improvedprecision of tidal and storm surge prediction to the greater Pacific and Indian Oceans. When joined with existing computational models of oceanic, marine, and deltaic systems worldwide, the Storm Surge Model development allows for a truly comprehensive assessment of water elevation and circulation forecasts of coastal storms.

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Development of a Wave and Circulation Model for the New York Harbor

Project Sponsors: FM Global

Collaborators: Shangyao Nong, Hosam Ali, FM Global

Project Goal: Develop a high resolution model of the new York Bight focused on New York Harbor and the Hudson River, Long Island and the Port of New Jersey. Hindcast Hurricane
Sandy (2012) as a validation of model skill.

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Recently Completed Projects


Combined Wind, Wave, Surge and Rainfall Runoff Processes in Evaluating Coastal and Inland Inundation

Project Sponsors: FM Global

Collaborators: Shangyao Nong, Hosam Ali, FM Global

Project Goal: Integrate rainfall directly into the shallow water equation.

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Discontinuous Galerkin Spectral Wave Model

Collaborators: Clint Dawson, University of Texas at Austin, and Casey Dietrich, North Carolina State University

Project Goal: The goal of this project is to optimize and validate a Discontinuous Galerkin (DG) spectral wave model for realistic cases. Discontinuous Galerink methods allow for the implementation of unstructured meshes in geographic space and for the use of adaptive, higher-order approximations in both geographic and spectral space, which leads to increased accuracy and efficiency. In addition, we couple this DG spectral wave model to the DG-Shallow Water Equation Model (DG-SWEM) to account for wave-current interactions.

Project Documentation:
J. Meixner, J.C. Dietrich, C. Dawson, M. Zijlema, L.H. Holthuijsen, 2013. "A Discontinuous Galerkin Coupled Wave Propagation/Circulation Model." J. of Sci. Comput,. 1-37
Significant wave heights over a near-circular shoal

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NSF CMG Collaborative Research: Simulation of Wave-Current Interaction Using Novel, Coupled and Non-Phase and Phase-Resolving Wave and Current Models

Project Sponsor: National Science Foundation

Collaborators: Andrew Kennedy, University of Notre Dame; Ethan Kubatko, Ohio State University; Clint Dawson, University of Texas at Austin

Project Goal: Accurate representation of nearshore physics during major storm events such as hurricanes is an important component of inundation prediction for coastal communities.  In order to improve the capabilities of the ADCIRC model to predict wave action, wave breaking, and wave run-up in the nearshore region we have been working to develop a set of nearshore phase-resolving wave models that can be incorporated with currently used ocean circulation models such as ADCIRC.
This project has taken two directions: the development of a Boussinesq-type model to predict fluid velocities and free-surface which is capable of capturing rotational velocitiesthrough the incorporation of a Green-Naghdi type approximation along the vertical axis;  and the second direction involves the development of a Boussinesq-type nonhydrostatic pressure module which, when coupled with a hydrostatic circulation model, will allow the model to capture dispersive effects in shallow water and better resolve the nearshore wave dynamics.

Project Documentation:
Zhang, Y., A.B. Kennedy, T. Tomiczek, A. Donahue, J.J Westerink, "Validation of Boussinesq-Green-Naghdi modeling for surf zone hydrodynamics," Ocean Engineering, 111, 290-309, 2016.

Donahue, A.S., Y. Zhang, A.B. Kennedy, J.J. Westerink, N. Panda, C. Dawson, "A Boussinesq-scaled, Pressure-Poisson water wave model," Ocean Modeling, 86, 36-57, 2015.

Zhang, Y., A. B. Kennedy, N. Panda, C. Dawson, J.J. Westerink, “Generating–absorbing sponge layers for phase-resolving wave models,” Coastal Engineering, 84, 1-9, DOI 10.1016/j.coastaleng.2013.10.019, 2014.

Zhang, Y., A.B. Kennedy, N. Panda, C. Dawson, J.J. Westerink, "Boussinesq-Green-Naghdi rotational water wave theory," Coastal Engineering, 73, 13-27, 2013.

Zhang, Y., A.B. Kennedy, A.S. Donahue, J.J. Westerink, N. Panda, C. Dawson, “Rotational surf zone modeling for O(μ4) Boussinesq–Green–Naghdi systems,” http://dx.doi.org/10.1016/j.ocemod.2014.04.001Ocean Modeling79, 43–53, 2014

Panda, N., C. Dawson, Y. Zhang, A. Kennedy, J. Westerink, A. Donahue, Discontinuous Galerkin methods for solving Boussinesq-Green-Naghdi equations in resolving non-linear and dispersive surface water waves, Journal of Computational Physics, 273, 572-588, 2014

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SURA-IOOS Coastal and Ocean Modeling Testbed (SURA-IOOS COMT)

Project Sponsors: IOOS, NOAA, Sura

Collaborators:  R. Luettich, UNC; L. Zheng, R. Weisberg, Y. Huang, University of South Florida; H. Wang, Y. Teng, D. Forrest, Virinia Institute of Marine Sciences; A. Roland, Darmstadt University of Technology; A. Haase, A. Kramer, A. Taylor, J. Rhome, NWS, NOAA; J. Feyen, NDS, NOAA; R. Signell, Woods Hole Science Center, USGS; J. Hanson, J. Smith, ERDC, USACE; A. Kennedy, University of Notre Dame; M. Powell, HRD, NOAA; V. Cardone, A. Cox, Ocean Weather Inc.

Project Goal: The SURA led coastal and ocean modeling testbed. The goal is to bring the various communities of modelers together in an effort to improve the accuracy and efficiency of the network of coastal inundation models currently in operational use.  By bringing together members of the coastal inundation community the testbed project not only assesses the individual strengths of each model, but also creates a dialogue between modelers for the improvement of the entire set of models currently in use.  This project looks at the accuracy and computational efficiency of these models for both tropical storms in the Gulf of Mexico and extra-tropical storms along the Atlantic coast of the United States. We have taken the lead on the Gulf of Mexico component of the testbed and are currently comparing the accuracy of tides simulation and model hindcasts for Hurricanes Ike and Rita using a Gulf of Mexico mesh specifically designed for this project.  This direct comparison between models for the same storms and same mesh allows for an accurate comparison of models and more importantly has created a platformfor each of the modeling teams to discuss ways to improve the models.

Project Documentation:
Kerr, P.C., R.C. Martyr, A.S. Donahue, M.E. Hope, J.J. Westerink, R.A. Luettich Jr., A.B. Kennedy, J.C. Dietrich, C. Dawson, H.J. Westerink, "U.S. IOOS coastal and ocean modeling testbed: Evaluation of tide, wave, and hurricane surge response sensitivities to mesh resolution and friction in the Gulf of Mexico," Journal of Geophysical Research: Oceans, 118, 4633-4661, DOI 10.1002/jgrc.20305, 2013.

Kerr, P.C., A.S. Donahue, J.J. Westerink, R.A. Luettich Jr., L.Y. Zheng, R.H. Weisberg, Y. Huang, H.V. Wang, Y. Teng, D.R. Forrest, A. Roland, A.T. Haase, A.W. Kramer, A.A.Taylor, J.R. Rhome, J.C. Feyen, R.P. Signell, J.L. Hanson, M.E. Hope, R.M. Estes, R.A. Dominguez, R.P. Dunbar, L.N. Semeraro, H.J. Westerink, A.B. Kennedy, J.M. Smith, M.D. Powell, V.J.Cardone, A.T. Cox, "U.S. IOOS coastal and ocean modeling testbed: Inter-model evaluation of tides, waves, and hurricane surge in the Gulf of Mexico," Journal of Geophysical Research: Oceans, 118,10, 5129-5172, DOI 10.1002/jgrc.20376, 2013.

Chen, C., R.C. Beardsley, R.A. Luettich Jr., J.J. Westerink, H. Wang, W. Perrie, Q. Xu, A.S. Donahue, J. Qi, H. Lin, L. Zhao, P.C. Kerr, Y. Meng, B. Toulany, "Extratropical storm inundation testbed: Intermodel comparisons in Scituate, Massachusetts," Journal of Geophysical Research: Oceans, 118, 10, 5054-5073, doi:10.1002/jgrc.20397, 2013.

Zheng, L., R.H. Weisberg, Y. Huang, R.A. Luettich, J.J. Westerink, P.C. Kerr, A.S. Donahue, G. Crane, L. Akli, "Implications from the comparisons between two- and three-dimensional model simulations of the Hurricane Ike storm surge," Journal of Geophysical Research: Oceans, 118, 3350-3369, DOI: 10.1002/jgrc.20248, 2013.

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Southern Louisiana Grid 19 (SL19)

Project Sponsors: Joseph and Nona Ahearn Endowment, University of Notre Dame

Project Goal: The SL19 grid advances the storm model prediction of the Southern Louisiana grid series, centering on New Orleans and surrounding communities on the Gulf of Mexico coast, by increasing grid resolution to 7.7 million nodes and 15 million elements total. Mesh detail in areas around Sabine and Calcasien have been significantly improved from previous SL grid versions. Sections of the Gulf Intracoastal Waterway Nodal attributes have been updated throughout the model.

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Storm Surge Model Development and Applications for Southern Louisiana and Mississippi

Project Sponsors: USACE-LACPR; USACE-MVN; USACE-HPO; FEMA Region VI

Collaborators: Bruce Ebersole, Don Resio, Ty Wamsley, Jane Smith, CHL US Army ERDC; John Atkinson, Hugh Roberts, Arcadis; Hasan Pourtaheri, Jay Ratcliff, USACE-MVN; Clint Dawson, University of Texas at Austin; Randy Kolar, Kendra Dresback, University of Oklahoma

Project Goal: Develop a high resolution coupled atmospheric-wind-wave-tide-riverine flow-storm surge model for Southern Louisiana and Mississippi, validate this model and apply the model within a stochastic framework in order to establish 100 year flood levels in Louisiana and Mississippi and investigate the influence of barrier islands, built barriers, and marshes on surge levels in the region.

SL15 Model
SL16 Model

sl15
Project Documentation:
Flood Insurance Study: Southeastern Parishes, Louisiana, Intermediate Submission 2: Offshore Water Levels and Waves, FEMA, US Army Corps of Engineers, New Orleans District, July 24, 2008

S. Bunya, J.C. Dietrich, J.J. Westerink, B.A. Ebersole, J.M. Smith,  J.H. Atkinson, R. Jensen, D.T. Resio, R.A. Luettich, C. Dawson, V.J. Cardone, A.T. Cox, M.D. Powell, H.J. Westerink, H.J. Roberts, “A High Resolution Coupled Riverine Flow, Tide, Wind, Wind Wave and Storm Surge Model for Southern Louisiana and Mississippi: Part I - Model Development and Validation,” Monthly Weather Review, 138, 345-377, 2010.

Dietrich, J.C., S. Bunya, J.J. Westerink, B.A. Ebersole, J.M. Smith,  J.H. Atkinson, R. Jensen, D.T. Resio, R.A. Luettich, C. Dawson, V.J. Cardone, A.T. Cox, M.D. Powell, H.J. Westerink, H.J. Roberts, “A High Resolution Coupled Riverine Flow, Tide, Wind, Wind Wave and Storm Surge Model for Southern Louisiana and Mississippi: Part II - Synoptic Description and Analyses of Hurricanes Katrina and Rita ,” Monthly Weather Review, 138, 378-404, 2010.

Dietrich, J.C., J.J. Westerink, A.B. Kennedy, J.M. Smith, R. Jensen, M. Zijlema, L.H. Holthuijsen, C. Dawson, R.A. Luettich, Jr., M.D. Powell, V.J. Cardone, A.T. Cox, G.W. Stone, H. Pourtaheri, M.E. Hope, S. Tanaka, L.G. Westerink, H.J. Westerink, Z. Cobell, "Hurricane Gustav (2008) Waves and Storm Surge: Hindcast, Synoptic Analysis and Validation in Southern Louisiana,"Monthly Weather Review, 139, 2488-2522, DOI 10.1175/2011MWR3611.1, 2011.

Hope, M.E., J.J. Westerink, A.B. Kennedy, P.C. Kerr, J.C. Dietrich, C. Dawson, C.J. Bender, J.M. Smith, R.E. Jensen, M. Zijlema, L.H. Holthuijsen, R.A. Luettich Jr., M.D. Powell, V.J. Cardone, A.T. Cox, H. Poutaheri, H.J. Roberts, J.H. Atkinson, S. Tanaka, H.J. Westerink, and L.G. Westerink, "Hindcast and validation of Hurricane Ike (2008) waves, forerunner, and storm surge," Journal of Geophysical Research: Oceans118, 4424-4460doi:10.1002/jgrc.20314, 2013.

Kennedy, A.B., U. Gravois, B.C. Zachry, J.J. Westerink, M.E. Hope, J.C. Dietrich, M.D. Powell, A.T. Cox, R.A. Luettich, R.G. Dean, "Origin of the Hurricane Ike Forerunner Surge," Geophysical Research Letters38, L08608, DOI 10.1029/2011GL047090, 2011j, 2011.

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Storm Surge Model Development and Applications for Texas

Project Sponsors: USACE-MVN; FEMA Region VITexas

Collaborators: John Atkinson, Hugh Roberts, Arcadis; Clint Dawson, University of Texas at Austin; Don Resio, CHL US Army ERDC; Chris Bender, Taylor Engineering; Randy Kolar, Kendra Dresback, University of Oklahoma

Project Goal: Develop a high resolution coupled atmospheric-wind-wave-tide-riverine flow-storm surge model for Texas, validate this model and apply the model within a stochastic framework in order to establish 100 year flood levels in coastal Texas.

Project Documentation:
Hope, M.E., J.J. Westerink, A.B. Kennedy, P.C. Kerr, J.C. Dietrich, C. Dawson, C.J. Bender, J.M. Smith, R.E. Jensen, M. Zijlema, L.H. Holthuijsen, R.A. Luettich Jr., M.D. Powell, V.J. Cardone, A.T. Cox, H. Poutaheri, H.J. Roberts, J.H. Atkinson, S. Tanaka, H.J. Westerink, and L.G. Westerink, "Hindcast and validation of Hurricane Ike (2008) waves, forerunner, and storm surge," Journal of Geophysical Research: Oceans118, 4424-4460doi:10.1002/jgrc.20314, 2013.

Kennedy, A.B., U. Gravois, B.C. Zachry, J.J. Westerink, M.E. Hope, J.C. Dietrich, M.D. Powell, A.T. Cox, R.A. Luettich, R.G. Dean, "Origin of the Hurricane Ike Forerunner Surge," Geophysical Research Letters38, L08608, DOI 10.1029/2011GL047090, 2011j, 2011.

**Texas FEMA Report**

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Collaborative Research: NSF PetaApps Storm Surge Modeling on Petascale Computers

Project Sponsor: National Science Foundation Award No. OCI-0746232

Collaborators: Clint Dawson, University of Texas at Austin; Anna Spagnuolo, Oakland UniversityPeta

Project Goal: Develop CG and DG based coastal hydrodynamics for peta-scale computers efficiently operating 10,000's of processors simultaneously and improve the physics by tightly coupling to rainfall-runoff models

Project Documentation:
Dietrich. J.C., M. Zijlema, J.J. Westerink, L.H. Holthuijsen, C. Dawson, R.A. Luettich, R. Jensen, J.M. Smith, G.S. Stelling, G.W. Stone, “Modeling Hurricane Waves and Storm Surge using Integrally-Coupled, Scalable Computations,” Coastal Engineering, 58, 45-65, 2011.

Wirasaet, D., S. Tanaka, E.J. Kubatko, J.J. Westerink, C. Dawson, "A Performance Comparison of Nodal Discontinuous Galerkin Methods on Triangles and Quadrilaterals," International Journal for Numerical Methods in Fluids, 64, 1336-1362, 2010.

Tanaka, S., S. Bunya, J.J. Westerink, C. Dawson, R.A. Luettich, Jr., "Scalability of an Unstructured Grid Continuous Galerkin Based Hurricane Storm Surge Model," Journal of Scientific Computing, 46, 329-358, 2011.

Dawson, C., J. Westerink, E. Kubatko, J. Proft, C. Mirabito, "Parallel Finite Element Models for Hurricane Storm Surges," Proceedings of the Teragrid '08 Conference, Las Vegas, NV, June 9-13, 2008.

E.J Kubatko, S. Bunya, C. Dawson, J.J. Westerink, C. Mirabito, “A Performance Comparison of Continuous and Discontinuous Finite Element Shallow Water Models,” Journal of Scientific Computing, 40, 315-339, 2009.

D.T. Resio and J.J. Westerink, “Hurricanes and the Physics of Surges,” Physics Today, 61, 9, 33-38, 2008.

Dietrich, J.C., S. Tanaka, J.J. Westerink, C.N. Dawson, R.A. Luettich, Jr., M. Zijlema, L.H. Holthuijsen, J.M. Smith, L.G. Westerink, H.J. Westerink, "Performance of the Unstructured-Mesh, SWAN+ADCIRC Model in Computing Hurricane Waves and Surge," Journal of Scientific Computing, 52, 468-497, 2012.

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Air-Sea Interaction and Flow Resistance, Wave-Current and Vegetation Effects for Hurricane Storm Surge Computation manning n

Project Sponsor: USACE-Morphos

Collaborators: Jane Smith and Ty Wamsley, CHL USACE-ERDC

Project Goal: Test improved bottom friction forumulation and air-sea drag relationships to refine model skill in storm surge forecasting

Project Documentation:
D.T. Resio and J.J. Westerink, “Hurricanes and the Physics of Surges,” Physics Today, 61, 9, 33-38, 2008.

Kerr, P.C., J.J. Westerink, J.C. Dietrich, R.C. Martyr, S. Tanaka, D.T. Resio, J.M. Smith, H.J. Westerink, L.G. Westerink, T. Wamsley, M. van Ledden, W. deJong, "Surge Generation Mechanisms in the Lower Mississippi River and Discharge Dependency,"Journal of Waterway, Port, Coastal, and Ocean Engineering139, 326-335, 2013.

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Riverine Flows, Tides and Surge in the Lower Mississippi River and Delta and Atchafalaya River and Deltamississippi river

Project Sponsor: USACE-MVN

Collaborators: John Atkinson, Hugh Roberts, Arcadis; Hasan Pourtaheri, Nancy Powell, USACE-MVN

Project Goal: Refine and validate the SL15 model for riverine discharges, tides and surges in the Mississippi River and Delta and the Atchafalaya River and Delta. Study the influence of high riverine discharges on surge levels propagating up these rivers and through their distributaries.

Project Documentation:
Martyr, R.C., J.C. Dietrich, J.J. Westerink, P.C. Kerr, C. Dawson, J.M. Smith, H. Pourtaheri, N. Powell, M. Van Ledden, S. Tanaka, H.J. Roberts, H.J. Westerink, L.G. Westerink, "Simulating Hurricane Storm Surge in the Lower Mississippi River under Varying Flow Conditions," Journal of Hydraulic Engineering139, 492-501, 2013. 

Kerr, P.C., J.J. Westerink, J.C. Dietrich, R.C. Martyr, S. Tanaka, D.T. Resio, J.M. Smith, H.J. Westerink, L.G. Westerink, T. Wamsley, M. van Ledden, W. deJong, "Surge Generation Mechanisms in the Lower Mississippi River and Discharge Dependency,"Journal of Waterway, Port, Coastal, and Ocean Engineering, 139, 326-335, 2013.

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Hurricane Inundation Risk in the North Pacific Ocean

Project Sponsor: U.S. Army Engineer Research and Development Center, Coastal Hydraulics Laboratoryhawii

Collaborators: Jane M. Smith, US ERDC, Ty Wamsley, US ERDC, Kwok Fai Cheung, University of Hawaii, Andrew Kennedy, University of Notre Dame, Alexandros Taflanidis, University of Notre Dame

Project Goal: Develop a hurricane storm surge, wave and wave runup data base for the Hawaiian Islands that can be used to produce real time forecasts for incoming hurricanes as well as inundation risk maps.

Project Documentation:
Kennedy, A.B., J.J. Westerink, J.M. Smith, M.E. Hope, M. Hartman, A. Taflanidis, S. Tanaka, H. Westerink, K. Cheung, T. Smith, M. Hamann, M. Minamide, A. Ota, C. Dawson, "Tropical cyclone inundation potential on the Hawaiian Islands of Oahu and Kauai," Ocean Modelling, 52-53, 54-68, 2012.

Taflanidis, A.A., A.B. Kennedy, J.J. Westerink, J. Smith, K.F.Cheung, M. Hope, S. Tanaka, "Rapid Assessment of Wave and Surge Risk during Landfalling Hurricanes: Probabilistic Approach"Journal of Waterway, Port, Coastal, and Ocean Engineering139, 171-182, 2013.

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Supplemental Funding Request for the Application of the ADCIRC Coastal Circulation Model for Predicting Near Shore and Inner Shore Transport of Oil from the Horizon Oil Spillgustav

Project Sponsor: National Science Foundation RAPID; Department of Homeland Security

Collaborators: Richard A. Luettich, University of North Carolina, Clint Dawson, The University of Texas at Austin, Robert Twilley, Louisiana State University, Casey Diestrich, North Carolina State University

Project Goal: Develop real time forecasting system for oil spill tracking along the Gulf Coast with a focus on oil movement into estuaries, wetlands, and floodplains.


Project Documentation
:
Dietrich, J.C., C.J. Trahan, M.T. Howard, J.G. Fleming, R.J. Weaver, S. Tanaka, L. Yu, R.A. Luettich, C.N. Dawson, J.J. Westerink, G. Wells, A. Lu, K. Vega, A. Kubach, K.M. Dresback, R.L. Kolar, C. Kaiser, R.R. Twilley, "Surface trajectories of oil transport along the northern coastline of the Gulf of Mexico,"Continental Shelf Research, 41, 17-47, 2012

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CMG Collaborative Research: Adaptive Numerical Methods for Shallow Water Circulation with Applications to Hurricane Storm Surge Modeling

Project Sponsor: National Science Foundation Award No. DMS-0620696

Collaborators: Clint Dawson, University of Texas at Austin; Rick Luettich, University of North Carolina at Chapel Hill
inlet
Project Goal: Develop a new generation of algorithms for coastal flow and transport equations that are:
                              - Robust and accurate in solving propagation and advection
                              - Elementally mass conservative
                              - Suited for multi-physics
                              - Suited for meter scale resolutions
                              - Highly parallelizable
                              - h and p adaptive

Project Documentation:
Dietrich. J.C., M. Zijlema, J.J. Westerink, L.H. Holthuijsen, C. Dawson, R.A. Luettich, R. Jensen, J.M. Smith, G.S. Stelling, G.W. Stone, “Modeling Hurricane Waves and Storm Surge using Integrally-Coupled, Scalable Computations,” Coastal Engineering, 58, 45-65, 2011.

Wirasaet, D., S. Tanaka, E.J. Kubatko, J.J. Westerink, C. Dawson, "A Performance Comparison of Nodal Discontinuous Galerkin Methods on Triangles and Quadrilaterals," International Journal for Numerical Methods in Fluids, 64, 1336-1362, 2010.

Tanaka, S., S. Bunya, J.J. Westerink, C. Dawson, R.A. Luettich, Jr., "Scalability of an Unstructured Grid Continuous Galerkin Based Hurricane Storm Surge Model," Journal of Scientific Computing, 46, 329-358, 2011.
Kubatko, E.J., C. Dawson, J.J. Westerink, “Time Step Restrictions for Runge-Kutta Discontinuous Galerkin Methods on Triangular Grids,” Journal Computational Physics, 227, 9697-9710, 2008.

Kubatko, E.J., S. Bunya, C. Dawson, J.J. Westerink, “Dynamic p-adaptive Runge-Kutta Discontinuous Galerkin Methods for the Shallow Water Equations,” Computer Methods in Applied Mechanics and Engineering, 198, 1766-1774 , 2009.

Bunya, S., E.J. Kubatko, J.J. Westerink, C. Dawson, “A Wetting and Drying Treatment for the Runge-Kutta Discontinuous Galerkin Solution to the Shallow Water Equations,” Computer Methods in Applied Mechanics and Engineering, 198, 1548-1562, 2009.

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Wave and Circulation Prediction on Unstructured Grids

Project Sponsor: Office of Naval Research Award No. N00014-06-1-0285

Collaborators: Clint Dawson, University of Texas at Austin; Rick Luettich, University of North Carolina at Chapel Hill; Guus Stelling, Leo Holthuizen, Delft University of Technology
wave set up
Project Goal: Dynamically couple wind wave models with coastal circulation models
                              - Apply tight two-way coupling on identical unstructured grids
                              - Apply dynamic h-p adaptivity to resolve waves, wave radiation stress
                                gradients and currents as they evolve
                              - Optimize parallel scaling

Project Documentation:
Dietrich. J.C., M. Zijlema, J.J. Westerink, L.H. Holthuijsen, C. Dawson, R.A. Luettich, R. Jensen, J.M. Smith, G.S. Stelling, G.W. Stone, “Modeling Hurricane Waves and Storm Surge using Integrally-Coupled, Scalable Computations,” Coastal Engineering, 58, 45-65, 2011.

Wirasaet, D., S. Tanaka, E.J. Kubatko, J.J. Westerink, C. Dawson, "A Performance Comparison of Nodal Discontinuous Galerkin Methods on Triangles and Quadrilaterals," International Journal for Numerical Methods in Fluids, 64, 1336-1362, 2010.

Tanaka, S., S. Bunya, J.J. Westerink, C. Dawson, R.A. Luettich, Jr., "Scalability of an Unstructured Grid Continuous Galerkin Based Hurricane Storm Surge Model," Journal of Scientific Computing, 46, 329-358, 2011.

Kubatko, E.J., C. Dawson, J.J. Westerink, “Time Step Restrictions for Runge-Kutta Discontinuous Galerkin Methods on Triangular Grids,” Journal Computational Physics, 227, 9697-9710, 2008.

Kubatko, E.J., S. Bunya, C. Dawson, J.J. Westerink, “Dynamic p-adaptive Runge-Kutta Discontinuous Galerkin Methods for the Shallow Water Equations,” Computer Methods in Applied Mechanics and Engineering, 198, 1766-1774, 2009.

Bunya, S., E.J. Kubatko, J.J. Westerink, C. Dawson, “A Wetting and Drying Treatment for the Runge-Kutta Discontinuous Galerkin Solution to the Shallow Water Equations,” Computer Methods in Applied Mechanics and Engineering, 198, 1548-1562, 2009.

Kubatko, E.J., S. Bunya, C. Dawson, J.J. Westerink, C. Mirabito, “A Performance Comparison of Continuous and Discontinuous Finite Element Shallow Water Models,” Journal of Scientific Computing, 40, 315-339, 2009.

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