Due to the important role of snow cover in the hydrological cycle, measuring snow parameters seems necessary. These parameters are generally measured using field observations at meteorological stations. However, since snow gauge stations do not have a suitable spatial distribution and the number of these stations is very limited, traditional ground measurement methods do not have the efficiency for intermittent monitoring of snow physical characteristics. Hence, the method examined in this study is the use of re-analysis data. This study investigates the temporal distribution of snow depth in the mountainous region of Alborz and Zagros for 40 years, from 1981 to 2020, using MERRA-2 analysis data. Alborz mountain range has more snow depth than Zagros and snow cover in this field. The mountain is more durable but has a larger standard deviation than the Zagros.
Keywords: temporal distribution, snow depth, mountainous region, Alborz, Zagros, MERRA-2.