Hi Don !
I thought that it would be a good time again to ask some "stupid" questions.
But first: I got this from the link you posted. It gives an analoque between the atmospheric physics of Mars and Earth.

According to the model, the highest surface pressure, 12.4 millibars, occurs at the bottom of the Hellas Basin (a low-lying area created by an ancient asteroid strike). The problem is that the boiling temperature there is only +10 °C. It can't get very hot or the water will boil away. Evaporation of water in contact with Mars' dry atmosphere is also a problem. Liquid water can be stable against freezing and stable against boiling, but unstable with respect to evaporation. The situation is analogous to Earth's oceans. Liquid water on the surface does not freeze ... or boil, yet it can evaporate if the atmosphere is not saturated with water vapor."

Would you agree that IF the atmospheric pressure on Earth was similar to that of Mars, then the water vapor effect would also be similar?

If the atmosphere and water vapor 'escaped' from the surface of mars, (the molecules would act as if they were small rockets, escaping from the planets influence,)
then according to the laws of physics, it should be possible also for the planet Earth to experience similar effect; naturally the energy requirement would be higher since the Earth is bigger, but if the energy was available, then the effect IS possible.
What if we added energy to the Earth's atmosphere.
There may be newer information on the amount of radioactivity in the atmosphere, I have not been looking for it, but the following is something I found long time ago.

From one location 230 tons of radioactive material has leaked into environment between the year 1959 and the year 1987. During the same period of time 337 tons of Uranium hexafluoride also escaped from various nuclear facilities
Between 1944 and 1987, 530,000 curies of radioactive Iodine has been released into the environment. Three Mile Island incident released 15 curies of radioactive Iodine.

Average atmospheric pressure at sea level (March 1978) 760 mm of mercury.

1 kg (2.2lb) of Uranium –235 releases 18.7 million kilowatt-hours of energy as heat.
Naturally occurring Uranium contains 0.71 percent -U235 remainder is -U238.
When -U238 absorbs neutrons it is changed to plutonium-239.

Pressure units of mercury barometers
http://www.npl.co.uk/npl/sections/pv/punits.html

http://www.npl.co.uk/npl/publications/ionising_radiation/
radiation ionizing

Could it be that the energy from the 'extra' radioactivity that has been released into the atmosphere IS accelerating some atmospheric molecules into space?
Could this be the reason why the ice is disapearing from the arctic. (Lower atmospheric pressure and more energy for its evaporation.)
How much has the ocean water level increased with the melting of this ice?

D- I can see it now...2004 "Its the planet, Stupid!"

You maybe right but it could have become that way with human intervension.

Cheers
Johannes