This report consists of two studies, each providing extensive data on researcher mobility in the Nordic region and beyond. In each of the reports different aspects of researcher mobility is analyzed with the help of a wide range of data and varied methodological approaches. This makes the description rich in terms of perspectives on mobility and underlines the complexity of the issue. Together they provide a basis for understanding patterns and trends of researcher mobility across the Nordic region as well as different types of incentives and obstacles promoting and inhibiting such mobility.