The purpose of this study is to develop a model to estimate the density of snowpack in wide area. Numerical model, which is based on heat balance model and considers consolidation process, is constructed to investigate the snow density variation at various regions. This model is applied to over 200 AMeDAS points in Japan and are results are compared with observed data. The relationship between snow density variation and other factors, which are snow depth variation, maximum snow depth and minimum temperature, is investigated using the calculation and theestimation model on the snow density in wide area using snow depth variation.
