>Sea ice doesn't contribute to sea level rise when it rises
Isn't there a small but not insignificant sea level rise due to warming of the water due to less sea ice (less light reflected, greater warming of the sea than with an ice layer)?
1) At the moment when the sea ice breaks off there is no rising in overall level due to fact that the ice displaces the same volume of water as is in it.
2) during the melting phase if the sea water around the ice is greater than 4 degrees, the melting will cause a temporary drop in the local temperature of water causing the water level to in fact drop slightly.
3) in the LONG term, the additional volume of liquid water added by the ice will be warmed and expand causing a slight increase in water level due to thermal expansion (assisted by the change in albedo of the whole system as you mentioned)
Isn't there a small but not insignificant sea level rise due to warming of the water due to less sea ice (less light reflected, greater warming of the sea than with an ice layer)?