[Phys-L] Re: A "simple" physics problem?

[Bob LaMontagne <rlamont@POSTOFFICE.PROVIDENCE.EDU>]

Warmer air doesn't "hold" more moisture. The saturation vapor pressure in a
container of water that has all its air pumped out will soon come to the
same value as when air was present. It's really a matter of the evaporation
rate increasing when the water is warmed - thereby increasing the saturation
pressure when the evaporation and condensation rates equalize again.

Bob at PC

-----Original Message-----
From: Forum for Physics Educators [mailto:PHYS-L@list1.ucc.nau.edu] On
Behalf Of Herbert H Gottlieb
Sent: Friday, April 08, 2005 10:37 AM
To: PHYS-L@LISTS.NAU.EDU
Subject: Re: A "simple" physics problem?

Please don't forget that as the sea water becomes warmer
it heats the air above the water. The warmer air can hold
much more moisture making the sea level even lower by an
rch or two.

Herb

On Fri, 08 Apr 2005 08:05:05 -0400 "Spagna Jr., George" <gspagna@RMC.EDU>
writes:
> Vickie Frohne wrote:
> Subject: Re: A "simple" physics problem?

> > BTW, this question is tied into some environmental issues. Any rise
> in the ocean levels due to global warming will be due to ice that's
> currently on land (ice sheets in Greenland or Antarctica). Melting
> sea ice (i.e. the north polar ice cap)will not contribute to the rise
> in sea level because floating sea ice is already displacing ocean
> water.
>
> Warming of the existing sea water will also cause sea levels to
> rise, due to "thermal expansion."
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