Salmon lice LADIM V2

This data set constitute an archive with spatiotemporal concentrations of lice larvae in the upper 2m of the water masses during the periods from April 1th – August 30th, 2012 - 2019. The data set has been established using a combination of state-of-the-art hydrodynamic, particle tracking and lice biology models. The salmon lice advection and growth model is based on the Lagrangian Advection and Diffusion Model (LADiM; Ådlandsvik, 2019). Physical forcing fields (three-dimensional currents and hydrography) are provided by the ocean model system NorKyst800 (Albretsen et al., 2011), based on the Regional Ocean Modelling System (ROMS, www.myroms.org; Shchepetkin and McWilliams 2005; Haidvogel et al., 2008). The horizontal quadratic grid cell size is 800 x 800 m, and realistic forcing of the ocean model from atmosphere, tides, and rivers are included as described by Asplin et al. (2014) and Johnsen et al. (2014). A more detailed description of the parameterization of the model lice behaviour used in this study, can be found in Sandvik et al. (2020).