Fig. 9From: Operational strategies to alleviate thermal impacts of the large-scale borehole heat exchanger array in Beijing Daxing AirportDistribution of ground temperature after a 50-year-long period operation in Scenario #0. The 3000 mesh nodes with the lower temperature are marked by the pink dots. In the northern district (a), the most severe cold accumulation occurs outside BHE arrays, and occurs inside and outside of the BHE arrays in the southern district (b)Back to article page