1.4 What if you could see CO2
What if you could see CO2 ppm concentrations in the Earth’s atmosphere?
Each of these 4 large BLUE squares is exactly 1 million pixels (ie. 1,000 x 1,000 parts). The first large BLUE square represents an amount of air in the Earth’s atmosphere that contains no CO2 at all, so it is entirely BLUE with no RED pixels.
Now, the visible amount of pixels that have been changed to RED pixels within the other 3 large BLUE squares graphically represents the relative amount of CO2 in parts per million of BLUE atmosphere.
Each complete RED square is exactly 100 pixels (ie. 10 x 10 parts) and to see the differences they’re grouped together in small squares. In real air the CO2 parts spread out, so you would not be able to see the differences in CO2 levels.
As shown here, the relative visible differences in the amount of RED CO2 ppm are very tiny when each large BLUE square is compared. However, the actual different effects to Earth that are caused by these very tiny relative differences in the amount of RED CO2 in ppm are extremely large.