Correlation between CO2 climate forcing and Temperature

Since the subject came up …

There are certain claims (some false) about the correlation (or not) between CO₂ in the atmosphere and global temperature. Several folks have pointed out that we shouldn’t really be looking at the correlation between temperature and CO₂, but between temperature and CO₂ forcing.

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Correlation between CO2 and Temperature

Here’s the global average temperature anomaly since 1880 (let’s use the data from NASA, shall we?).