Ocean Wave Modeling

Early in 1979, a group of wave researchers proposed a wave model inter­ comparison study to clarify the interrelations existing among the various wave models which have been developed in past years for real-time wave forecasting, wave statistics compilations, or hindcast case studies. The idea was immediately welcomed by the wave modeling community, and, finally, nine wave modeling groups from the United States, Japan, and Europe participated in the exercise. The principal results of this work are presented here jointly by the Sea Wave Modeling Project (swAMP) Group (the members of which are listed in Appendix A). Descriptions of the models used in the study are given in Part II of this volume. A more complete documentation of the entire set of numerical experiments is given in Part 2 of the Sea Wave Modeling Project (SWAMP group, 1982). The main purpose of the intercomparison study was to test our present understanding of the physics of . wind-generated surface waves from the viewpoint of wave modeling. Specifically, we wished to clarify the basic interdependence between understanding the physics of surface waves, repre­ senting the physics numerically, and predicting quantitatively the detailed space-time evolution of a two-dimensional surface wave spectrum for a given wind field. It was not our intent to carry out a model competition. In this sense there were no winners or losers: all models could claim specific strong points, and all displayed weaknesses in some areas. Front Matter....Pages i-vi Front Matter....Pages 1-5 Introduction: The Spectral Energy Balance....Pages 7-10 Model Classes....Pages 11-17 Test Strategy....Pages 19-24 Decoupled Propagation Models....Pages 25-27 Coupled Hybrid Models....Pages 29-35 Coupled Discrete Models....Pages 37-40 Case II: Fetch- and Duration-Limited Growth....Pages 41-54 Case III: Slanting Fetch....Pages 55-70 Case IV: Half-Plane Wind Field....Pages 71-81 Case VII: 90° Change in Wind Direction....Pages 83-102 Case V: Diagonal Front....Pages 103-114 Case VI: Stationary and Moving Hurricane....Pages 115-134 Summary....Pages 135-138 Outlook....Pages 139-140 Front Matter....Pages 155-155 The MRI Wave Model....Pages 157-166 The VENICE Model for Wind Wave Prediction....Pages 167-185 The Norwegian Wave Model NOWAMO....Pages 187-191 The KNMI Operational Wave Prediction Model GONO....Pages 193-200 The TOHOKU Wave Model....Pages 201-210 The Hybrid Parametrical (HYPA) Wave Model....Pages 211-214 Front Matter....Pages 155-155 The UK Meteorological Office Operational Wave Model (BMO)....Pages 215-219 Intercomparison Test Version of the SAIL Wave Model....Pages 221-233 The DNS Model: An Improved Spectral Model for Ocean Wave Prediction....Pages 235-248 The Wave Model EXACT-NL....Pages 249-251 Back Matter....Pages 253-256