The wave atlas – providing an overview of wave conditions in Danish waters

We conducted several numerical model studies to develop a comprehensive wave atlas – an overview of wave conditions in the Danish waters. This product gives easy access to the said wave conditions, including potential effects of climate change on them.

Most of the Danish coasts (more than 7,000 km) are in essence, shaped by the weather. Waves in particular, determine the type of a coast and its orientation. Therefore it is important to know the local wave climate (for example, when coastal protection is planned and designed).

The Danish Coastal Authority approached us to develop an overview of the Danish wave conditions – to determine the wave climate at 40 locations within Danish waters. Furthermore, they wanted the study to address how future climate changes may affect the waves in these waters.

We adopted a three-step approach to conduct this study:

• Hindcast modelling of wave conditions applying historical wind and pressure fields
• Changes in wave climate due to climate change
• Estimation of future wave conditions by combination of Step 1 and 2

In so doing, we developed a comprehensive wave atlas. This product facilitates ease of access to the wave conditions in Danish waters, including possible future impacts of climate change on them.