It should be noted that the ‘today’ scenario also was based on wind and pressure fields from the climate models. We repeated this for a ‘today’ reference period being the period 1961-1990. This was used along with an estimated sea level rise to model the current, water level and wave conditions for the 30-year period. We then applied these wind and pressure fields as input for our hydrodynamic and wave models. This means that the same climate scenario was modelled with different climate models.īased on the Intergovernmental Panel on Climate Change (IPCC), climate scenario A1B wind and pressure fields were modelled in the climate models for the period 2070-2099. For this, we applied input from a number of different climate models – both global and regional. To assess the changes in wind, wave and water level conditions in Danish waters due to future climate changes, we carried out comprehensive numerical modelling of current, water level and wave conditions. Changes in wave climate due to climate change Such extreme wave conditions are important in connection with the design of marine structures such as breakwaters and coastal protection workĢ.
#MIKE 21 WAVE MODEL EXAMPLES SERIES#
We modelled the wave conditions hour-on-hour for an 18-year period, based on detailed historical wind fields.įollowing the wave modelling, we extracted time series of wave heights, wave For this, we used our third generation spectral windwave model – MIKE 21 Spectral Waves (SW). We determined the wave conditions in Danish waters through comprehensive numerical hindcast modelling. Hindcast modelling of wave conditions applying historical wind and pressure fields.Furthermore, they wanted the study to address how future climate changes may affect the waves in these waters. As such, 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.
They are responsible for regulatory tasks concerning coastal protection.ĭue to a lack of comprehensive knowledge about wave conditions in Denmark’s coastal waters, dedicated studies are required each time data is needed for the assessment of coastal impact and for coastal protection plans at a new location. The coastal authority manages the governmental interests within the field of coastal protection. The Coastal Authority is the official coastal government agency, covering the entire coastline of Denmark. Therefore, it is important to know the local wave climate (for example, when coastal protection is planned and designed). Waves in particular, determine the type of a coast and its orientation. Most of the Danish coasts (more than 7,000 km) are in essence, shaped by the weather.