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?

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

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

I think the salinity of the water affects density (and freezing and
boiling points), but not necessarily the change in density with changing
temperature.

Water is fairly uncompressable, in contrast of course to water vapor. I
won't argue the last point with a sailor ...

--
Best regards
Han
email address is invalid