Fig. 7

Simulated surface temperature from January 2001 to April 2005. The values of the conduit permeability, the CO₂ flow rate, and its percentage in the mixture are reported over time. An increase in the permeability and in the flow rate and percentage of CO₂ are simulated in the linear trend period and in the heating phase from 6 November 2004 to 13 January 2005, while a decrease in the permeability and in the content and percentage of CO₂ are simulated in the cooling phase which affects the period 14 January 2005–30 April 2005 (Tables 3, 4). The temperature measurements are extrapolated from Diliberto (2011)