aCO2 = anthropogenic CO2
tCO2 = total CO2
G = Greenhouse Effect
F = Burning and Cutting
About 200 years ago, before the start of the Industrial Revolution, people burned little fuel and the rate at which forests were cut down was relatively low.
These activities generate carbon dioxide. Since they were small in scale, human production of carbon dioxide was minimal and the anthropogenic contribution to total atmospheric carbon dioxide was small.
The Greenhouse Effect and the temperature of the Earth's surface were stable.
With the start of the Industrial Revolution, burning of fuels and the cutting down of forests accelerated rapidly. 'F' rises.
The burning of fuels and the decay of downed forests produces (anthropogenic) carbon dioxide. 'F' rises and causes 'aCO2' to rise.
The increased production of anthropogenic carbon dioxide causes the total carbon of the atmosphere to rise. 'F' rises and causes 'aCO2' to rise which causes 'tCO2' to rise.
The rise in total atmospheric carbon dioxide enhances the Greenhouse Effect. 'F' rises and causes 'aCO2' to rise which causes 'tCO2' to rise, which then causes 'G' to be enhanced.
Enhancement of the Greenhouse Effect causes the temperature of the atmosphere and of the surface of the Earth to rise (global warming). 'F' rises and causes 'aCO2' to rise which causes 'tCO2' to rise, which then causes 'G' to be enhanced, which in turn causes 'T' to rise.
PEOPLE HAVE CAUSED GLOBAL WARMING
David J. Leveson