Have we done the imminent Ice Age yet?

[pjclarke]

The Martian atmosphere consists of approximately 96% carbon dioxide, and yet it's frickin freezing there.

Gas pressure and proximity to the Sun is what counts.

So a thick blanket keeps you no warmer than a thin one? Venus is at 95 bar, Mars around 6 mBar, the resulting difference in optical depth is what explains hte majority of the difference ,,

Planetary Atmospheres

[DimPrawn]

runaway greenhouse gas yet ave temps of -63c.


Venus is hot because of the atmospheric pressure. and pj conveniently forgets that water vapour is the primary gh gas on earth anyway. and water vapour is not increasing like the models claimed it would

CO2 is a piss poor greenhouse gas, but a religion based on water vapour wouldn't gain any funding. The gravy train of "research" would dry up. Dry up, geddit?

[EternalOptimist]

there are 21 molecules of CO2 near the surface of mars for every one on the earth.
yet mars is at -63c

[EternalOptimist]

CO2 is a piss poor greenhouse gas, but a religion based on water vapour wouldn't gain any funding. The gravy train of "research" would dry up. Dry up, geddit?

dry up , ver good.

wait till I hit him with my Uranus joke

[pjclarke]

CO2 is a piss poor greenhouse gas, but a religion based on water vapour wouldn't gain any funding. The gravy train of "research" would dry up. Dry up, geddit?

What happens if you dump extra H2O into the atmosphere? It rains.
What happens if you dump extra CO2 into the atmosphere? It stays there for decades, increasing concentration for decades and centuries.

We know this because: research.

[BlasterBates]

So a thick blanket keeps you no warmer than a thin one? Venus is at 95 bar, Mars around 6 mBar
Planetary Atmospheres

exactly as we pointed out atmospheric pressure.

Checkout the temperature profile on Venus where atmospheric pressure drops.

See if you can spot a "Tropospheric Hotspot" on Venus, it might support your argument that pressure isn't important, if you can find one that is.

[EternalOptimist]

exactly as we pointed out atmospheric pressure.

Checkout the temperature profile on Venus where atmospheric pressure drops.

See if you can spot a "Tropospheric Hotspot" on Venus, it might support your argument that pressure isn't important, if you can find one that is.

But they have found the 'hot-spot' on Venus, they also found in on the earth. In their models

[DodgyAgent]

What happens if you dump extra H2O into the atmosphere? It rains.
What happens if you dump extra CO2 into the atmosphere? It stays there for decades, increasing concentration for decades and centuries.

We know this because: research.

H2O rains , then evaporates and rains again. In other words it remains in the atmosphere.

[pjclarke]

H2O rains , then evaporates and rains again. In other words it remains in the atmosphere.

But relative humidity remains constant, that is, there is no net accumulation of water, other factors being constant.

https://en.wikipedia.org/wiki/Clausi...eyron_relation

[pjclarke]

runaway greenhouse gas yet ave temps of -63c.


Venus is hot because of the atmospheric pressure. and pj conveniently forgets that water vapour is the primary gh gas on earth anyway. and water vapour is not increasing like the models claimed it would

Not that strong on facts are you?

Between 2003 and 2008, the global-average surface
temperature of the Earth varied by 0.6C. We analyze here
the response of tropospheric water vapor to these variations.
Height-resolved measurements of specific humidity (q) and
relative humidity (RH) are obtained from NASA’s satellite borne
Atmospheric Infrared Sounder (AIRS). Over most of
the troposphere, q increased with increasing global-average
surface temperature, although some regions showed the
opposite response. RH increased in some regions and
decreased in others, with the global average remaining
nearly constant at most altitudes. The water-vapor feedback
implied by these observations is strongly positive, with an
average magnitude of lq = 2.04 W/m2/K, similar to that
simulated by climate models.

[..]

The existence of a strong and positive water-vapor feedback means that projected business-as-usual greenhouse-gas emissions over the next century are virtually guaranteed to produce warming of several degrees Celsius. The only way that will not happen is if a strong, negative, and currently unknown feedback is discovered somewhere in our climate system.

Dessler et al 2008 , Geophysical Research Letters.

Water-vapor climate feedback inferred from climate fluctuations, 2003–2008 - Dessler - 2008 - Geophysical Research Letters - Wiley Online Library