 The Tibet OBS is a unique observatory designed to measure soil moisture and soil temperature on the Tibetan Plateau. This observatory consists of three regional scale and city reference networks, which provide a representative coverage of the different climate and land surface hydro meteorological conditions on the Tibetan Plateau. The aim of this study was to assess the reliability of several satellite products for the Naku and Maku network areas. The results show that global course resolution soil moisture products are useful but exhibit till now unreported uncertainties in cold and semi-arid regions. Therefore, it is important to quantify and reduce these uncertainties by using insidia measurements. This article was offered by Zizu, Jaewen, El Dente, and others.