Source: J.L. Daly, 2003. "What the Stations Say."
What's the connection between CO2 and temperature at the South Pole? Either cooling or no correlation. The upper line graphs changes of the surface temperature at Amundsen-Scott Station at the South Pole between 1957 and 2000. The line starting in 1973 graphs concentrations of CO2 in air between 1973 and 1999.