Han wrote in news:XnsA0847BD6DC6C5ikkezelf@
207.246.207.124:

One of the scary reasons to pay attention to ocean warming is
that much is really cold (like in the 30's and low 40's in Fahrenheit). If
all that ocean water warms just a few degrees, it will expand, and thus the
level will go up. Somebody ought to have the calculated data how much up
that up is.

Not scary at all to anyone who's had an education in the physical sciences.

Water has its maximum density of 1.00000 g/ml at 3.98 degrees C. At 5 deg C (41 deg F) its
density is 0.99999 g/ml, and at 10 deg C (50 deg F) the density is 0.99973 g/ml -- IOW,
warming from 4 deg C to 10 deg C, water will expand by a factor of (1.00000 / 0.99973) =
1.00027, or about one-fortieth of one per cent.

Water is actually more dense at 5 deg C than at 0.

[Source for the above data is the Handbook of Chemistry and Physics]