Fig. 2: Vertical structure of the zonal-mean air temperature response to increasing CO2 forcing.
From: Arctic amplification, and its seasonal migration, over a wide range of abrupt CO2 forcing

a–g The zonal-mean air temperature responses for 2× to 8 × CO2 respectively in fully coupled model experiments. Only the responses passing Student’s t-test with 95% confidence interval are shown. h Polar cap-averaged (60°N–90°N) air temperature responses.