Re: Ice and Water Levels

On Sun, 05 Aug 2007 21:39:00 -0700, chatnoir
<wolfbat359a@xxxxxxxxxxxxxx> wrote:

On Aug 5, 1:47 pm, El Castor <No_...@xxxxxxxx> wrote:
On Sun, 05 Aug 2007 19:37:26 GMT, bswi...@xxxxxxxx (Ned Niws) wrote:
On Sun, 5 Aug 2007 08:55:59 -0700, "Jerry Okamura"
<okamuraj...@xxxxxxxxxxxxx> wrote:

Found this interesting posting on another newsgroup. Perhaps someone can
explain what is wrong with the point?

Take a glass and fill it halfway with water. Mark that point with a pen or
perhaps with some tape. Now add a few ice cubes, then mark the water level
with the cubes in it. Please wait several minutes. You may optionally use
a microwave oven to help speed the melting if you are impatient. Mark the
level of the water after the ice melts. According to some, the water level
should rise when the ice melts. Is that what you found?

Don't think so Jerry. As long as the ice is free floating, water level
stays the same.

The fallacy re saying that global warming will not result in rising
water levels is that the snow and ice aren't necessarily free
floating. A lot of the snow and ice (certainly in Greenland and
Antarctica) is above the sea level, melting or subliming and
eventually running into the sea. That is what will account for the
rise in sea level.

B

Correct, but after the ice melts and the water warms, it will expand
as the temperature rises, however this expansion will be so
insignificant as to be immeasurable in a glass.

http://sedac.ciesin.org/mva/WR1987/WR1987.html

"Our projections of greenhouse-gas induced sea-level rise due to
thermal expansion between 1985 and 2 025 are also relatively small,
4-8 cm, accompanied by a global mean warming in the range 0.6-1.0°C."
http://sedac.ciesin.org/mva/WR1987/WR1987.html

Tell me Black Cat, what is the "correct" temperature of the planet?
Why is the current temperature exactly the correct one -- or is it?

.

Relevant Pages

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