Researcher mobility project: Atmospheric forcing on sea ice drift

funded by the Academy of Finland, 2013-2014

The project is carried out in collaboration between the Finnish Meteorological Institute (PI: Timo Vihma) and the Max Planck Institute for Meteorology (PI: Dirk Notz).

The aim of this project is to improve our understanding of the momentum transfer from the atmosphere to the ice, which is the main driver of sea-ice drift. Recent studies have shown that certain aspects of the Arctic sea-ice drift are apparently poorly understood and poorly represented in climate models. This currently hinders a realistic representation of sea-ice drift patterns in large-scale climate models. To address this issue, we will work in this project towards a better understanding of two main processes that determine momentum transfer. First, we will investigate the dependence of momentum transfer from the atmosphere to the ice on atmospheric stratification, in particular for strong static stability. Second, we will create a roughness length parametrization for multi-category sea-ice models.