Specifically how is the AGW mechanism for global surface warming supposed to work? How is the global “ocean heat content (OHC)” supposed to be increasing under a strengthening “radiative greenhouse effect (rGHE)”?
By reducing the surface’s ability to cool via thermal radiation (IR).
Here’s the basic idea:
Assuming the mean solar input [Qin] stays the same and assuming changes in evaporative-convective losses [Qout ev] only ever come in the form of responses to preceding “greenhouse”-induced warming, that is, these losses stay constant until such warming occurs, then the only mechanism for warming (of surface and/or ocean bulk) is a reduction in surface radiative losses [Qout rad], i.e. in the ‘radiant heat loss’ or – same thing – the ‘net LWIR flux’ coming off the surface:
Balance: ΔQin = ΔQout ev + ΔQout rad → 0 = 0 + 0
Imbalance: ΔQin = ΔQout ev + ΔQout rad → 0 = 0 + (-1) = -1
When less heat goes out than what comes in, warming ensues. It’s that simple …
This is the theory.
Now, do we see this AGW warming mechanism at work in the Earth system today? Can we observe it empirically? Can we follow in the available data the ongoing strengthening of the rGHE resulting from our continued fossil fuel emissions?
In fact, we observe the exact opposite of what the theory above says should happen! Continue reading