How can a small proportion of carbon dioxide in the atmosphere have such a large effect on our climate?
The current (2023) level of CO2 in the atmosphere is about 420 PPM – that is 420 parts of CO2 (by volume) for every million parts of the atmosphere. That appears really small, doesn’t it? In terms of percentage, it is just 0.04%! But it is this small proportion and increases to it that are resulting in large climatic changes. Instances of small climatic changes leading to […]