FREQUENTLY ASKED QUESTIONS
- How do we know that CO2 is increasing in the atmosphere?
How fast is CO2 increasing in the atmosphere and is this changing?
How do we know that the CO2 increase is caused by human activities?
Isn't the Mauna Loa record influenced by CO2 emitted by the volcano?
How much has atmospheric CO2 increased since the industrial and agricultural revolutions?
What are stable isotopes in atmospheric CO2 and why are these measured as well as its concentration?
Lessons for long-term earth observations