As a greenhouse gas, this increase in atmospheric CO2 increases the amount of downward
longwave radiation from the atmosphere, including towards the Earth's surface.
The downwelling
longwave radiation from the atmosphere is not some theory that you can wave off with your own theory.
You said: The only other available source is the downwelling
longwave radiation from the atmosphere.
Not exact matches
The
longwave radiation from the cloud - free
atmosphere can only increase due to increasing surface temperature or due to increasing greenhouse gases, who additionally close the window.
Absorption of thermal
radiation cools the thermal spectra of the earth as seen
from space,
radiation emitted by de-excitation is what results in the further warming of the surface, and the surface continues to warm until the rate at which energy is radiated
from the earth's climate system (given the increased opacity of the
atmosphere to
longwave radiation) is equal to the rate at which energy enters it.
The outgoing
longwave radiation is composed not just of the
radiation that leaks through to the top
from the warm lower layers, but also of the «cold»
radiation emitted
from the upper
atmosphere.
The imbalance is not between IR absorbed and IR emitted by a layer of
atmosphere, but between the incoming shortwave solar energy
from space and the outgoing
longwave energy emitted to space, due to the increasing difference between the ground temperature and the temperature of the level
from which re-emitted
radiation can escape to space.
Their container for their empty space
atmosphere being the non-existant glass of their greenhouse which prevents
longwave infrared direct
from the Sun entering, which is heat
radiation, and for which they have substituted shortwave mainly visible light to heat their imaginary Earth, impossible in the real world.
As long as the outgoing
longwave radiation is n`t decreasing over the Top Of
Atmosphere, all the heat uptake comes
from the change of short wave
radiation.
About 70 % of the
longwave radiation emitted
from the Earth's surface is absorbed by the
atmosphere's greenhouse gases.
Truth n ° 14 The outgoing
longwave radiation from the upper
atmosphere is larger than what models say: there is no «blanket» effect du to Greenhouse gases
In a real planetary greenhouse, you have a «one - way» hole in the form of an
atmosphere that allows solar
radiation in and blocks
longwave radiation from leaving.
However, the purple balls, representing
longwave radiation from the Earth, are intercepted by the
Atmosphere.
In that thread, I posted a comment with an analogy of truckloads of orange juice, representing short - wave
radiation from Sun to Earth, and truckloads of blueberry juice, representing
longwave radiation between Earth and the
Atmosphere and back out to Space.
Anthropogenic global warming is caused by an increase in the amount of downward
longwave infrared
radiation coming
from greenhouse gases in the
atmosphere.
In point of fact the ocean is transparent to shortwave
radiation from the sun and opaque to
longwave back - radiated
from the
atmosphere.
The
atmosphere is also reflective, Trenberth accounts close to 38 % of
longwave radiation from the ground to be reflected.
The latter is made up of two large terms: the emitted
radiation from the surface and the downwelling
longwave radiation coming back
from the
atmosphere.
That means that newly emitted
longwave radiation from the Earth's surface will spend more time in the lower reaches of the
Atmosphere and therefore contribute to heating the N2 and O2 and other components of the air more than before.
We use the 9 climate variables of surface air temperature (SAT), sea level pressure (SLP), precipitation (rain), the top of
atmosphere (TOA) shortwave (SW) and
longwave (LW) full - sky
radiation, clear - sky
radiation (CLR, radiative flux where clouds do not exists), and cloud radiative forcing (CRF, radiative effect by clouds diagnosed
from the difference between full - sky and clear - sky
radiation, Cess et al. 1990).