Climate nutters, page-245

  1. 2,653 Posts.
    lightbulb Created with Sketch. 267
    >The atmosphere is transparent enough that heaps of IR radiation makes it to the surface.
    CO2 emits and absorbs only specific wavelengths of IR.
    They don't really reach the earth from the sun.

    > I said, yes there was and tried to explain the mechanism whereby it does.
    I really can't think of a scenario where it would. CO2 is a better conductor than N2 so it heats faster, hot CO2 does not emit a lot of IR, instead it tends towards conducting its energy to other molecules.

    During the day the air is heated almost entirely by conduction/ convection.
    As the air is hotter this pushes the effective band of air cold enough to actually trap infrared higher

    When the sun stops hitting the earth, it cools rapidly and conduction/ convection stops and the earth continues to radiate heat.
    The greenhouse effect refers to the trapping of heat when the earth loses heat by radiation.



    >But I never made this point.
    This is the point *I* am making.
    The greenhouse effect does not increase peak noon temperatures.


    >I'd really like to know why you think this about CO2? Which physical effect are you referring to here? Is it Kirchoff's law you're interpreting this way?
    No, but Kirchoffs law applies.

    Of course at a given temperature it will emit as much as it absorbs, but at higher temperatures and pressures, it doesn't absorb too much.
    I'm assuming that the reason for this is that, again, at higher temperatures and pressures, the energy is transferred by particle collision.


    Try this one
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6174548/

    It's just a known climate science fact that the band of greatest CO2 infrared emissivity (the area of the "greenhouse effect" in the stratosphere) is at around 5km altitude. Theres also another band slightly higher wherein CO2 actually has a cooling effect. It's pretty interesting as a system, really.

    The greenhouse effect isn't occurring at surface level....




 
arrow-down-2 Created with Sketch. arrow-down-2 Created with Sketch.