Richard Engelen, deputy director of Copernicus Atmosphere Monitoring Services (CAMS), emphasizes that 'the absolute value of CO2 concentrations is irrelevant. It is the change that matters.' This highlights that while current CO2 levels may seem small, the increase over time due to human activity is critical for understanding its impact on climate change.
Paulo Ceppi, a senior lecturer in climate science at Imperial College London, compares the situation to dietary salt, stating: 'It's like claiming that adding salt to your food cannot cause high blood pressure, because it's only a tiny fraction of the food you eat.' This analogy underscores how even a small percentage of CO2 can significantly affect global temperatures.
Experts emphasize that the increase of CO2 concentration has surged by 50% from pre-industrial levels due to human actions. This stark rise is deemed the most significant metric for assessing CO2's climate effects, contrary to claims that its low percentage in the atmosphere renders it harmless.
Commentators in social media dismiss the significance of CO2, making statements like, 'It's only just above a record multi-million year low. It's not a problem.' Such claims are misleading as they ignore the critical changes in CO2 levels and their direct correlation with climate change.
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