Table 3: Comparison of mean surface temperatures collected from ASTER images and field measurements at the measurement sites.

UCPLRCASRHRHLHS

Daytime07/28
 Timage (°C)38.941.239.938.237.331.941.244.3
 Tin situ (°C)46.544.547.949.849.646.846.751.0
 RMSE (°C)8.15.48.411.813.415.76.17.9
09/23
 Timage (°C)30.430.431.532.132.229.832.033.2
 Tin situ (°C)33.134.634.735.636.834.335.438.2
 RMSE (°C)3.25.13.73.85.04.74.45.3
Nighttime09/21
 Timage (°C)17.017.319.019.417.718.717.617.3
 Tin situ (°C)15.315.316.517.316.416.414.316.0
 RMSE (°C)1.92.32.63.11.62.43.71.9
09/28
 Timage (°C)16.517.818.719.018.519.217.317.3
 Tin situ (°C)15.015.516.116.515.816.013.916.9
 RMSE (°C)1.62.42.72.52.83.33.91.1

UC: university campus, P: urban park, LR: low-rise apartments, CA: commercial area, SR: single residential, HR: high-rise apartments, and HL: homogenous lawn, HS: homogenous sidewalk brick.