SnapWave: fast, implicit wave transformation  from offshore to nearshore

Roelvink, Dano; van Ormondt, Maarten; Reyns, Johan; van der Lugt, Marlies

doi:10.5194/gmd-18-9469-2025

Articles | Volume 18, issue 23

https://doi.org/10.5194/gmd-18-9469-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-18-9469-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 23

Model description paper

|

03 Dec 2025

Model description paper |

| 03 Dec 2025

SnapWave: fast, implicit wave transformation from offshore to nearshore

Dano Roelvink, Maarten van Ormondt, Johan Reyns, and Marlies van der Lugt

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Mar 2025	502	78	4	584
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Jun 2025	160	30	0	190
Jul 2025	126	34	6	166
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Cumulative views and downloads (calculated since 24 Mar 2025)

Month	HTML	PDF	XML	Total
Mar 2025	502	78	4	584
Apr 2025	872	130	4	1,006
May 2025	210	50	8	268
Jun 2025	160	30	0	190
Jul 2025	126	34	6	166
Aug 2025	884	58	4	946
Sep 2025	2,700	82	10	2,792
Oct 2025	102	52	2	156
Nov 2025	210	62	8	280
Dec 2025	1,339	351	35	1,725
Jan 2026	569	219	14	802
Feb 2026	244	145	15	404
Mar 2026	195	97	12	304
Apr 2026	168	86	4	258
May 2026	1	3	1	5

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Short summary

Existing wave models are often quite heavy for coastal applications. The SnapWave model simulates wave refraction (turning towards the coast), shoaling (steepening up) and dissipation (loss of energy by friction and wave breaking), and it uses an efficient computational mesh that you can refine where you need it. In the paper we show that the model can reproduce time series of waves anywhere in the world, using a depth map and wave data from a global model (ERA5) or a local wave buoy.