Elevation-dependent effects of snowfall and snow cover changes on runoff variations at the source regions of the Yellow River basin

Abstract

This study improves snow identification and snowmelt simulation in the source regions of the Yellow River basin (SYRB). By establishing a response function between elevation and snowfall, snow cover, and temperature, it reveals dynamic relationships and a significant decrease in the snowfall ratio. Snowmelt is negatively correlated with snowfall and cover, more so at higher altitudes. The study enhances the accuracy of snow identification and simulation in the WEP-L model, contributing to better water resource understanding and utilization in high-altitude cold regions. It provides valuable insights for managing water resources and can aid the development of more accurate models for similar areas.