Intercomparison of the normalized correlation between the air temperature and LULC types for (a) vegetation and (b) impervious surfaces at the study site and the normalized footprint, on April 19, 2000.

(The average turbulent field data for estimating the footprint are: friction velocity u* = 0.2 m s-1, dynamic stability z/L = -0.2 unstable, and roughness length z0 = 0.05 m).