the Finnish Environment Institute,
Regional Environment Centres and the Department of Geography,
University of Turku. The input data sets, from which the final grids
were created, consisted of photogrammetric TIN (Triangulated
Irregular Network) models in Lapua (with point density of c.
20 m and ±30 cm z accuracy) and Kittilä (with point density of
10–40 m and ±20 cm z accuracy), 10 m national Digital/media/ces/Journal_of_Hydrology_Veijalainen_etal.pdf