re: #7 lostlakehiker

Thank you for taking this paper seriously and posting scientific questions with evidence to back your claims. Other comments were not as rigorous.

There are thresholds

There may well be thresholds, but where they are is unknown. There may be literature on ice core samples, etc but I am not familiar with them.

Past some point, no further radiative forcing due to increased CO2 is needed; the system will proceed on its own to a new equilibrium with a lot of open water in the summer.

A lot of qualifiers there, may be true, and probably papers to address these issues, but again unknown.

I am not disputing AGW, just the catastrophic predictions that stem from the IPCC reports of temperature increases of several degrees Celsius. Hasn’t happened yet and may never happen, especially if forcing due to C02 concentrations isn’t that strong.