Hi,
I'm trying to run transients on a mountain glacier over a very long time in order to achieve steady state (water column varying less than 1e-6 m in the final time steps). When I run for 4 years with a 1-day time step, everything goes well but I'm not achieving steady state. I've been instructed to try around 20,000 days with a 30-day time step, but when I increase the time step I continually get the following with every time step:
"maximum number of nonlinear iterations of outer loop (100) exceeded"
I've tried upping the maximum iterations to 400, which reduced the number of these messages, but I am still receiving over 200 on average in the 700 step long transient. Is there anything else I can do to improve this? Or anything that might most likely be causing this issue that I should look deeper into?
Thanks,
Michael