En:1st nopp wave meeting
- 1 1st NOPP wave meeting, San Francisco July 2010
- 1.1 1. Issues to be addressed
- 1.2 2. Agenda for the 1st NOPP wave meeting
- 1.3 2. Publications relevant to our discussions
1st NOPP wave meeting, San Francisco July 2010
List of participants: firstname.lastname@example.org , email@example.com, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, email@example.com ….
This meeting is not a conference like WISE or OMAE with a list of papers, but should really be a WORKshop. In order to start the debate and work we encourage participants to present a “position paper” reviewing the state of the art, this may be done in a collective fashion. Based on that some clear questions should arise, be debated and form the basis of our joint work for the coming months.
Obviously, it is also a good opportunity to present some recent results, but this should leave room for discussions and be streamlined toward integration in numerical wave models.
As a result the program lists the “position papers” in bold, that are expected to last 20 minutes or so and some shorter intervention meant to shed some light on specific sub-topics
1. Issues to be addressed
- How much do we know the physics (going over the different source terms)
- How do we verify the “know” bits and test ideas for unknown bits
- Classical or near-classical tests: fetch-limited, PM limit, slanting fetch growth (with directional data), spectral shape (bimodality, lobe ratio) …
- More elaborate data sets: breaking statistics, whitecap coverage …
- Creative use of usual data: patterns of changes, analysis of normalized spectra, data mining for specific cases (swell-dominated, turning winds …)
- Physics and numerics …: being careful, in particular for directional spectra
- How do we work together as a group and towards operational implementation
2. Agenda for the 1st NOPP wave meeting
9:00 AM: Welcome (Linwood, Don, Hendrik)
9:15 AM: Status on operational systems or hindcasts and known errors
- Hendrik Tolman: operational systems, needs, issues and performances
- F. Ardhuin: analyzing forcing and parameterization errors from the SHOM-Ifremer system: among other issues, evidence for swell damping, iceberg effects, mixed sea-swell behaviour, extreme seas, swell patterns ….
- E. Rogers: Higher order validation, identification and documentation of model deficiencies
11:00 AM: Wind input: General discussion about what we know and what we do not know. What is really known beyond Snyder et al?
- Alex Babanin (with Erick Rogers if Erick agrees): new observational features of the wind-input and whitecap dissipation, their independent testing and calibration, implementation
- Fabrice Ardhuin: Wind input and dissipation level constrained by slanting fetch growth
Noon: lunch break
1:00 PM: Discussion on the knowledge of physics in relation to features of spectral wave evolution
- Don Resio and Andrei Pushkarev: Nonlinear interactions and spectral shape
- Mike Banner: Wave dissipation: causes, effects and modeling
- Russel Morison: Spectral shapes, high frequency spectral levels, bimodality, source term balances and constraints.
- Alex Babanin: integral, spectral and directional dependences for wave evolution
- Alex Babanin: wave breaking and dissipation
- additional constraints :
- Fabrice Ardhuin: analysis of mean square slopes and behaviour
- Alex Babanin: constraints for the dissipation and input, their variability
- others …
6:00 PM: Meeting adjourned
8:30 AM: Shallow water physics
- Tim Janssen: Nonlinearity from deep to shallow: a discussion primer.
- Tim Janssen and Andre van der Westhuysen :depth-induced breaking
- Fabrice Ardhuin : combined deep and shallow breaking. bottom friction
- Alex Sheremet: dissipation over mud
1:00 PM: validation datasets
- Spectral shapes : how do we validate them.
The validation dataset: which data for which purpose ?
- Francesco Fedele: Wave Acquisition Stereo System (WASS) data and frequency-wavenumber spectra of wind waves
- Jeff Hanson: Duck shelf data and finite depth physics
- Fabrice Ardhuin: SAR, buoy and seismometer data for the analysis of swell fields
8:30 PM: Practical calculation of nonlinear interactions
- Gerbrant van Vledder and Will Perrie and Hendrik Tolman (??): Present status on faster alternatives and trade-offs for better approximations than the DIA. (please guys organize yourselves …)
10:30 PM: Wave model numerics
- Anybody willing to summarize the numerical schemes, limiters, directional renormalization, diffusion, splitting errors ?
Erick Rogers to begin, others to follow ?
1:00 PM: Practical aspects of joint work
- Code version management
2. Publications relevant to our discussions
Please include below any useful references, possibly with http adresses for PDF or other materials
- Filipot, J.-F., F. Ardhuin, and A. Babanin, “A uniﬁed deep-to-shallow-water wave-breaking probability parameterization,” J. Geophys. Res., vol. 115, p. C04022, 2010.
- Babanin, A.V., 2009: Breaking of ocean surface waves. Acta Physica Slovaca, 59(4), 305-535
- Galchenko, A., A.V. Babanin, D. Chalikov, I.R. Young, and T.-W. Hsu, 2010: Modulation depth and breaking strength for deep-water wave groups. Journal of Physical Oceanography, in press
- Babanin, A.V., D. Chalikov, I.R. Young, and I. Savelyev, 2010: Numerical and laboratory investigation of breaking of steep two-dimensional waves in deep water. Journal of Fluid Mechanics, 644, 433-463
- Toffoli, A., A.V. Babanin, T. Waseda, and M. Onorato, 2010: The maximum steepness of oceanic waves. Geophysical Research Letters, 37, L05603, doi:10.1029/2009GL041771
- Babanin, A.V., D. Chalikov, I.R. Young, and I. Savelyev, 2007: Predicting the breaking onset of surface water waves. Geophysical Research Letters, 34, L07605, doi:10.1029/2006GL029135
- F. Ardhuin, B. Chapron, and F. Collard, “Observation of swell dissipation across oceans,” Geophys. Res. Lett., vol. 36, p. L06607, 2009.
- F. Collard, F. Ardhuin, and B. Chapron, “Monitoring and analysis of ocean swell ﬁelds using a spaceborne SAR: a new method for routine observations,” J. Geophys. Res., vol. 114, p. C07023, 2009.
Source term balances
- F. Ardhuin, E. Rogers, A. Babanin, J.-F. Filipot, R. Magne, A. Roland, A. van der Westhuysen, P. Queﬀeulou, J.-M. Lefevre, L. Aouf, and F. Collard, Semi-empirical dissipation source functions for wind-wave models: part I, deﬁnition, calibration and validation , J. Phys. Oceanogr., 40, corrected proofs, 2010.
- Babanin, A.V., K.N. Tsagareli, I.R Young, and D.J. Walker, 2010 : Numerical investigation of spectral evolution of wind waves. Part 2. Dissipation function and evolution tests. Journal of Physical Oceanography, 40(4), 667-683
- Tsagareli, K.N., A.V. Babanin, D.J. Walker, and I.R. Young, 2010: Numerical investigation of spectral evolution of wind waves. Part 1. Wind input source function. Journal of Physical Oceanography, 40(4), 656-666
- Banner, M. L., and R. P. Morison, “Reﬁned source terms in wind wave models with explicit wave breaking prediction. part I: Model frame-
work and validation against ﬁeld data,” Ocean Modelling, vol. 33, pp. 177–189, 2010.
- Young, I.R., and A.V. Babanin, 2006: Spectral distribution of energy dissipation of wind-generated waves due to dominant wave breaking. Journal of Physical Oceanography, 36(3), 376–394
- Manasseh, R., A.V. Babanin, C. Forbes, K. Rickards, I. Bobevski, and A. Ooi, 2006: Passive acoustic determination of wave-breaking events and their severity across the spectrum. Journal of Atmospheric and Oceanic Technology, 23(4), 599–618
- Donelan, M.A., A.V. Babanin, I.R. Young, and M.L. Banner, 2006: Wave follower measurements of the wind input spectral function. Part 2. Parameterization of the wind input. Journal of Physical Oceanography, 36(8), 1672-1688
Babanin, A.V., M.L. Banner, I.R. Young, and M.A. Donelan, 2007: Wave follower measurements of the wind input spectral function. Part 3. Parameterization of the wind input enhancement due to wave breaking. Journal of Physical Oceanography, 37(11), doi: 10.1175/JPO3147.1, 2764–2775
Forcing: winds, sea ice, icebergs, currents, water levels
- H. L. Tolman, “Limiters in third-generation wind wave models,” Global Atmos. Ocean Syst., vol. 8, pp. 67–83, 2002.
- A. J. van der Westhuysen, M. Zijlema, and J. A. Battjes, “Improvement of the numerics and deep-water physics in an academic version of SWAN,” in Proceedings of the 29th International Conference on Coastal Engineering, Lisbon, Portugal, ASCE, 2004.
- A. Roland, Development of WWM II: Spectral wave modelling on unstructured meshes. PhD thesis, Technische Universität Darmstadt, Institute of Hydraulic and Water Resources Engineering, 2008.
Other stuff ...
Stereo-video data and wave statistics
- Fedele F. and Arena F. 2010 Long-term statistics and extreme waves of sea storms, Journal of Physical Oceanography 40(5):1106-1117.
- Fedele F., Cherneva Z., Tayfun, A., and C. Guedes Soares 2010 NLS invariants and nonlinear wave statistics, Physics of Fluids 22, 036601.
- Fedele F., Tayfun, A., 2009 On nonlinear wave groups and crest statistics, Journal of Fluid Mechanics 620, 221-239.
- Fedele F., Sampath P., Gallego G., Yezzi A., Benetazzo A., Forristall G.Z., Tayfun M.A., Cavaleri L., Sclavo M., Bastianini M. 2009 Beyond Waves & Spectra: Euler Characteristics of Oceanic Sea States, 28th ASME Int. Conf. Offshore Mechanics and Arctic Engng, Honolulu, Hawaii, OMAE2009-79598.
- Fedele, F ; Gallergo, G. ; Yezzi, A. & Benetazzo, A. 2008 Understanding extreme waves via a variational wave acquisition stereo system, Workshop ROGUE WAVES 2008, Oct 13-15, Brest, France.
- Fedele, F., Gallego, G., Benetazzo, A., Yezzi A. 2008 Wave Statistics and Spectra via a Variational Wave Acquisition Stereo System, 27th International Conference on Offshore Mechanics and Arctic Engineering 2008 , Lisbon, Portugal paper OMAE2008-57160.
- Fedele F., 2008 Rogue wave in oceanic turbulence, PHYSICA D 237(14-17):2127-2131.
- Tayfun, M.A., Fedele F. 2007 Wave height distributions and nonlinear effects, Ocean Engineering 34, 1631-1644.