Dear all,
I am running CAM simulations (AGCM mode with prescribed SSTs), and I would like to know how to properly judge when the model spin-up is completed.
From what I understand, in coupled CESM runs one usually monitors the net TOM energy balance (e.g., RESTOM = FSNT – FLNT) and checks whether it approaches zero. However, in my CAM-only runs I find that RESTOM does not decrease with time and remains at a non-zero value.
My questions are:

I am running CAM simulations (AGCM mode with prescribed SSTs), and I would like to know how to properly judge when the model spin-up is completed.
From what I understand, in coupled CESM runs one usually monitors the net TOM energy balance (e.g., RESTOM = FSNT – FLNT) and checks whether it approaches zero. However, in my CAM-only runs I find that RESTOM does not decrease with time and remains at a non-zero value.
My questions are:
- For CAM with prescribed SSTs, what criteria should be used to determine spin-up completion?
- Is there a standard diagnostic (e.g., surface temperature, precipitation, or atmospheric energy balance) that should be checked instead of RESTOM?
