Anyone can look at the data and understand that the earth does not emit radiation from the surface to space at more than a few discrete frequencies. If this were not so, then the surface temperature of the Earth would be identical to the surface temperature of the Moon. Heat radiating from the surface is captured by the atmosphere and that heat then drives convection which is the primary heat transport mechanism in the lower atmosphere.
http://clivebest.com/blog/?p=1169
The atmosphere does not eliminate radiation to space, it simply causes the majority of the radiation from Earth to space to take place at a higher altitude, where colder temperatures means a reduction in the amount of radiative heat emitted. Surfaces emit heat in a smooth curve across all frequencies. Atmospheres can only emit radiation in the discrete wavelengths of emission from each constituent molecule.
In the lower atmosphere, each gas constituent absorbs all radiation in its discrete wavelengths before it can escape to space, until at higher altitudes eventually there is not sufficient concentration of that type of molecule to absorb it, which results in that heat being lost to space. So the only effect of increasing CO2 concentration is raising the altitude where emission from the CO2 occurs.
If the relationship between temperature and radiation was linear, then there would be a slight increase in radiation with altitude, because there is more surface area the higher you go. However, radiation is related to the 4th power of temperature, which drives the relationship the opposite direction.
Interestingly, temperatures start to increase again at altitudes above 20,000 meters, so when CO2 doubles one or two more times it will start to cause increased heat loss to space. https://scied.ucar.edu/webweather/weather-ingredients/change-atmosphere-altitude
Not really true.
Solar Storm Dumps Gigawatts into Earth's Upper AtmosphereThis was the biggest dose of heat weve received from a solar storm since 2005, says Martin Mlynczak of NASA Langley Research Center. It was a big event, and shows how solar activity can directly affect our planet.
Mlynczak is the associate principal investigator for the SABER instrument onboard NASAs TIMED satellite. SABER monitors infrared emissions from Earths upper atmosphere, in particular from carbon dioxide (CO2) and nitric oxide (NO), two substances that play a key role in the energy balance of air hundreds of km above our planets surface.
Carbon dioxide and nitric oxide are natural thermostats, explains James Russell of Hampton University, SABERs principal investigator. When the upper atmosphere (or thermosphere) heats up, these molecules try as hard as they can to shed that heat back into space.