Swingman wrote in
:

On 7/2/2012 6:15 PM, Doug Miller wrote:
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]

That's pure water. What about the salinity in seawater, which,
IIRC, adds significant mass without increasing volume?

The salinity adds a little bit of mass -- about three percent. The
ratios between densities at different temperatures are not
affected much by the salt.

Also, does not the pressures of depth increase density, which
would surely have a measurable impact on the average density?

No. Water is not compressible to any significant extent. Density
increases with depth only to about 1km, due *entirely* to
decreasing temperature. Below 1000m, the density of water is
essentially uniform.

Not arguing, just asking ... there's simply been too much water
(both fresh and sea) under my bridge in the last 45 years.

Understood.