Ok thanks I knew there was something, let’s go there. This is very much a non quantitative document. These are very common when scientists or others want to speak down at you, have a theory but no numbers.

There is one number in the article it states that thermal expansion accounts for about 1/2. Using my above caculation, that might be about 2-4 inches of sea level rise.

BUT

AVERAGE SEA TEMPERATURE:

The usually quoted value is 3.52 degrees Celsius. This is the volume-weighted average, calculated some decades ago from many thousands of measurements throughout much of the ocean. It is in fact the potential temperature.

Water has a negative coefficient of thermal expansion below 4°C, indicating that its volume decreases when temperature moves from 0°C to 4°C. The coefficient of thermal expansion of water is not constant and is not even linear.

SO IT ACTUALLY SHRINKS, contracts for the first .5C rise, before it even starts to expand.