- Joined
- Jan 25, 2012
- Messages
- 44,617
- Reaction score
- 14,470
- Location
- Texas
- Gender
- Male
- Political Leaning
- Conservative
Sorry the calculation of the greenhouse effect, ~33C is based on Earth's atmosphere being completely transparent,It has absolutely nothing to do with quantum absorption. To be a greenhouse gas it must not only absorb infrared radiation, it must also retain that heat even if it is just very briefly. Any wavelength longer than 780 nm and shorter than 1 mm is considered infrared. Only if the gas absorbs light in that range can be be construed to be a greenhouse gas. If the gas cannot or does not absorb IR radiation, then it is not a greenhouse gas and is considered to be transparent.
or without any atmosphere at all. All gases have some sort of absorption spectrum, and what is absorbed, Excites the energy state of the
atom until it ether collides with another atom or molecule, or spontaneously decays and emits photons.
The stated temperature of Earth without any greenhouse effect is stated to be about -18 C about the same average temperature
of the moon with almost no atmosphere. The main components of the atmosphere Nitrogen and Oxygen
have most of their absorption bands in the short wavelength spectrum (Visible light and shorter), but do have some absorption
bands in the near infrared.
Near-infrared absorption spectroscopy of oxygen and nitrogen gas mixtures
If for example nitrogen absorbs green photons coming from the sun, that energy must ether be radiated off as photons, or passed to other atomsThese new high-resolution measurements, on three mixtures of 21%, 50%, and 75% oxygen in nitrogen have allowed the investigation of the pressure and temperature dependencies of the continuum absorptions at 1.06 and 1.27 μm. The preliminary results of this investigation are reported here.
or molecules, just like what happens to CO2, except there is a lot more nitrogen, and sunlight is not in short supply.
Because the data is showing that CO2 is not doing what the alarmist claim, we have to consider other reasons why Earth
is warmer than it would be if the atmosphere were completely transparent.