2010 Blog Post On Venus

I wrote this post in 2010.

Hyperventilating on Venus | Watts Up With That?

Here was Lubos’ response.

I had to independently agree with the broad and important conclusion – after some checks and self-corrections – and I will try to convince you about the conclusion. This conclusion does mean that people like Carl Sagan, James Hansen, and others who have been using Venus as the model for the Earth’s greenhouse effect were wrong even morally.

The Reference Frame: Hyperventilating on Venus

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13 Responses to 2010 Blog Post On Venus

  1. Anon says:

    I might add that Venus is a very different object than the Earth. In addition to it being much closer to the Sun (thus receiving 25% more solar radiation) it has almost no rotation:

    Because its rotation is so slow, Venus is very close to spherical. A Venusian sidereal day thus lasts longer than a Venusian year (243 versus 224.7 Earth days). Venus’s equator rotates at 6.52 km/h (4.05 mph), whereas Earth’s rotates at 1,669.8 km/h (1,037.6 mph).

    But for Climate Science and CAGW theory, the approximation is close enough. (lol)

    • tonyheller says:

      Venus receives very little solar radiation. Its thick cloud layer reflects most of the sunshine away, which is why Venus appears very bright in the sky.

      • richard verney says:

        I recall reading that one of the Russian lander missions measured it at 4 w/m2.

        This was probably not at the equator, but confirms the point that incoming solar irradiance does not warm the surface to any measurable degree.

        It is interesting to compare the situation with Mars which is very similar to Earth in the sense that if one were to remove all GHGs from Earth’s atmosphere one would be left with an atmosphere of about the same density and pressure as that seen on Mars.

        The essential difference in the two atmosphere is that Earth has a lot of nitrogen, oxygen and argo.

        Mars has an order of magnitude more CO2 molecules than does planet Earth. Even taking into account water vapour, the Martian atmosphere has more molecules of GHGs than does Earth’s atmosphere, and yet there is almost no measurable GHE on Mars. There are estimates that it could be about 1 to 2K, but that is within measurement uncertainties.

        So it appears that Venus does not have the classic GHE, nor does Mars.

    • richard says:

      Close enough for Hansen to make a comparison so hoist by his own petard.

    • richard says:

      Probably a better comparison than the faked co2, in a test tube, in front of a lamp, experiment that alarmists like to salivate over.

  2. GW says:

    I guess this was before Anthony started hyperventilating about your discovery of the temperature adjustment fraud and calling it junk science ?

  3. CO2isLife says:

    Tony, Venus is warmed by incoming radiation, not trapping outgoing IR. ALarmints using Venus as an analogy don’t have a clue.
    Venus’ High Temperatures Aren’t Due to the Green House Gas Effect; More Climate Sophistry

  4. steve case says:

    Mars has an atmosphere that is 95% CO2, and it is so cold on Mars that it snows dry ice.

  5. KevinK says:

    Anybody up for a nice round of Dragon Slaying ?????

  6. Squidly says:

    Venus debunks the entire RGHE (radiative greenhouse effect) hypothesis. The so-called GHE (all versions) is not possible in this universe. Our very universe could not exist if the GHE were possible … period .. end of story.

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