I wonder if people said in 1851 " Hey its bloody hot this year"

lol

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In uk.sci.weather on Tue, 16 Dec 2003 at 16:05:23, Keith Dancey wrote :
In article , "Shaun Pudwell"
writes:

The problem I have is this: If CO2 is such a powerful greenhouse gas
Methane and Water Vapour are much worse ) , then why is Mars so cold?

Average atmospheric pressure on Mars is 6 millibars.

Enough to generate big dust storms though!

BTW, I've always wondered what the surface temperature of Venus would be
if its atmosphere was the same composition as Earth's.

Hotter obviously, since it's a lot closer to the sun, but by how much?
--
Paul Hyett, Cheltenham

Email to pahyett[AT]activist[DOT]demon[DOT]co[DOT]uk

In article , Paul Hyett writes:
In uk.sci.weather on Tue, 16 Dec 2003 at 16:05:23, Keith Dancey wrote :
In article , "Shaun Pudwell"
writes:

The problem I have is this: If CO2 is such a powerful greenhouse gas
Methane and Water Vapour are much worse ) , then why is Mars so cold?

Average atmospheric pressure on Mars is 6 millibars.

Enough to generate big dust storms though!

Indeed. Beagle 2 is due to land in Isidis Planitia - a low lying basin - just
at the end of the dust storm season. One unseasonal dust storm and... no
power.


BTW, I've always wondered what the surface temperature of Venus would be
if its atmosphere was the same composition as Earth's.

Estimated average surface temperature - 460 - 490C
Estimated greenhouse effect - 450 - 500K


Average Earth surface temperature ~ 15C
Estimated Earth greenhouse effect - 33K



Cheers,

keith


MARS EXPRESS


---
Iraq: 5 thousand million pounds, 50 lives, and counting...

In uk.sci.weather on Wed, 17 Dec 2003 at 15:07:17, Keith Dancey wrote :

BTW, I've always wondered what the surface temperature of Venus would be
if its atmosphere was the same composition as Earth's.

Estimated average surface temperature - 460 - 490C
Estimated greenhouse effect - 450 - 500K

So, you're saying the surface temperature would be -10 to +10C without
Venus's super-greenhouse effect?

Regards,
--
Paul Hyett, Cheltenham

Email to pahyett[AT]activist[DOT]demon[DOT]co[DOT]uk

In article , Paul Hyett writes:
In uk.sci.weather on Wed, 17 Dec 2003 at 15:07:17, Keith Dancey wrote :

BTW, I've always wondered what the surface temperature of Venus would be
if its atmosphere was the same composition as Earth's.

Estimated average surface temperature - 460 - 490C
Estimated greenhouse effect - 450 - 500K

So, you're saying the surface temperature would be -10 to +10C without
Venus's super-greenhouse effect?

The margin of error deduced from the figures quoted is greater than that:

-40C - +40C

However, "without Venus' super-greenhouse effect" might imply no atmosphere,
and calculations could be based upon Solar radiation subtended by the
diameter of Venus, and assuming similar surface thermal properties (which
they are not)...

Earth's average would be approx -18C with Venus at 0C

If Venus had an Earth-like atmosphere, its average surface temperature might
then be around 34C as against our 15C.


Cheers,

keith





---
Iraq: 5 thousand million pounds, 50 lives, and counting...

In uk.sci.weather on Thu, 18 Dec 2003 at 11:22:25, Keith Dancey wrote :
In article , Paul Hyett

If Venus had an Earth-like atmosphere, its average surface temperature might
then be around 34C as against our 15C.

Liveable, at least in the polar zones - lets get terraforming.
--
Paul Hyett, Cheltenham

Email to pahyett[AT]activist[DOT]demon[DOT]co[DOT]uk

"Paul Hyett" wrote in message
...
In uk.sci.weather on Thu, 18 Dec 2003 at 11:22:25, Keith Dancey wrote :
In article , Paul Hyett


If Venus had an Earth-like atmosphere, its average surface temperature
might
then be around 34C as against our 15C.

Liveable, at least in the polar zones - lets get terraforming.
--
Paul Hyett, Cheltenham

Email to pahyett[AT]activist[DOT]demon[DOT]co[DOT]uk

Well that's an original idea. I thought the plan was to venuform the Earth!

Cheers, Alastair.