Fig. 4. Disaggregated latent heating estimates (60-m resolution) on 1 July 2002 over the Walnut Creek study area during SMACEX, projected to UTM Zone 15 coordinates. Crosses indicate locations of 12 flux towers, while the white lines demarcate the Walnut Creek Twin Otter aircraft transects. Black lines represent the scale of the 5-km ALEXI grid. The towers were located in approximately eight ALEXI grid cells.