Hello,
I am using WEAP to simulated runoff of a small stream in Beas basin, Western Himalaya. There are 22 glaciers in the catchment of this stream. When I run the model upto 15 years, I find the glacier volume is decreasing, which is expected and the values are in accordance with glacier volume obtained by other methods. But, if I run the model for more than 15 years, glacier volume shows increasing trend after an initial decade of volume loss. I think this could be due to the simulated glacier depth is increasing tremendously (initial to 20 m to 94 m at the end of 24th year)in the higher elevations (more than 5700 masl)which is not feasible realistically. Can someone help with how to deal with this problem?

Many thanks