Carbon dioxide (CO2) makes up about 0.04% of the Earths atmosphere. While this may seem like a small amount, it plays a significant role in global warming. CO2 and water vapor are the two main molecules in the atmosphere that can absorb infrared radiation, which is emitted by the Earths surface as heat. Without these gases, the Earths surface temperature would be near zero degrees Fahrenheit.
The concentration of CO2 in the atmosphere has been rising due to human activities, particularly the burning of fossil fuels. Since the onset of industrial times in the 18th century, human activities have raised atmospheric CO2 by 50%, meaning the amount of CO2 is now 150% of its value in 1750. The global average atmospheric carbon dioxide was 417.06 parts per million (ppm) in 2022, setting a new record high.
In conclusion, while CO2 makes up only a small percentage of the Earths atmosphere, it has a significant impact on global warming due to its ability to absorb infrared radiation. The concentration of CO2 in the atmosphere has been rising due to human activities, and it is important to take action to reduce emissions and mitigate the effects of climate change.
