This article makes two significant points: – 1) The IPCC definition of “Greenhouse Effect” on page 946 of their Report No. 4, 2007, is wrong and no “Greenhouse Effect” is possible from the way IPCC define it. 2) Radiant energy reaching the Earth from the Sun is the only source of heat to maintain or vary global climate.
Total radiant heat gained must establish equilibrium with total radiant heat lost.
As in the past, global climate change can only be due to longer or shorter-term variations in solar radiation.
The erroneous IPCC definition
Readers are invited to consider a fundamental error in physics in the IPCC Report No. 4, 2007.
The definition of ‘Greenhouse Effect’ on page 946 contains an erroneous statement that would invalidate the premise on which most of the report is based.
We should have particular regard to the IPCC sentences that state: “Atmospheric radiation is emitted to all sides, including downward to the Earth’s surface. Thus, greenhouse gases trap heat within the surface-troposphere system.”
The definition then goes on to explain that the temperature of the Earth’s atmosphere decreases with height and the infrared radiation emitted to space originates from high altitude where the average temperature is -19°C in balance with the net incoming solar radiation.
The enveloping atmosphere keeps the Earth’s surface at a much higher temperature as IPCC says averaging +14°C so there is a temperature gradient all the way up to the limits of our gaseous atmosphere with, on average, all higher parts of the column of air being at lower temperature than those below it.
This gradient is measured thousands of times each day as our aeroplanes climb to high altitude but of course the main transfer of heat to the upper atmosphere is by convection. This is quite violent at times with typhoons, hurricanes, or tropical thunderstorms each afternoon.
Nevertheless, total radiant heat outward from the whole Earth must remain in equilibrium with the radiant heat inward from the Sun. The IPCC definition (below) claims that ‘Greenhouse gases’ (CO2, methane, water vapour, etc.) absorb thermal infrared radiation emitted by the Earth’s surface and by the atmosphere itself due to the same gases.


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