Argentiere glacier (ARG) is located in the Mont-Blanc valley (France), between 1500 and 3400 m altitude. The glacier is one of the glaciers with longest records of glacier mass balance worldwide. Data series are continuous and cover few decades.This site is also characterized by the complete glaciological parameters performed annually to complete annual and seasonnal mass balance : ice velocity, ice thickness variation, snout position.In addition, meteorological observations complete the data base. 1 weather station, running since 2006, is located on the moraine. ARG is a part of the French Glacier Observatory GLACIOCLIM/CRYOBS-CLIM.