sci.energy

In , habshi

wrote
on Mon, 25 Feb 2008 01:23:28 GMT
<@>:
> We need to sprinkle some catalysts or algae on Venus which
> will make the sulfuric acid precipitate as sulfur and water reforming
> the oceans and making Venus pleasant enough for us to go there when
> the mad Islamists have taken over Mother Earth.

Uh...good luck with *that* project. The current
atmospheric composition of Venus includes % water
vapor; assuming this is by mass, and that the atmosphere
has total mass * 10^20 kg, one gets * 10^12 m^3 of
liquid water, compared to Earth's * 10^18 m^3. Since
Venus's surface area is * 10^14 m^2, the resulting
water can cover the surface to an average depth of about
2 centimeters, assuming Venus's surface were totally flat
(which it isn't).

/wiki/Venus
/wiki/Atmosphere_of_Venus

And that's even before we begin to address the thermodynamics
of the excess heat stored in that atmosphere.

>
> excerpt
> Venus Express has found evidence for past oceans, and
> discovered a huge double atmospheric vortex at the south pole of the
> planet. Studies show that Venus's atmosphere was once much more like
> Earth's and that there was probably much liquid water on the surface.
> A runaway greenhouse effect was caused by evaporation of water, which
> – added to Venus's carbon dioxide-rich atmosphere and thick clouds of
> sulphur dioxide – produced the strongest planetary warming in the
> solar system, pushing surface temperatures above 460C. This makes
> Venus's surface hotter than Mercury's, even though Venus is nearly
> twice Mercury's distance from the Sun and receives only 25 per cent of
> Mercury's solar radiation.
>
> Venus Express:
> /science-e/www/area/?fareaid=64
>

Fine as far as it goes. However, I suspect the water then disassociated
into hydrogen and oxygen and the hydrogen largely fled into space.


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