This figure shows the interactive Global Climate Dashboard at Climate.gov. NOAA’s Climate.gov is a source of timely and authoritative scientific data and information about climate.
Atmospheric concentrations of CO2 over the last 10,000 years (large panel) and since 1750 (inset panel).
This figure a comparison of 10 different published reconstructions of mean temperature changes during the 2nd millennium. These curves are a fair representation of the range of results appearing in the published scientific literature.