Based on the Gaussian Fitting Method to Derive Daily Evapotranspiration from Remotely Sensed Instantaneous Evapotranspiration

Table 3

Gaussian fitting results on ET measurements at EC10 on cloud-free days in June 2012.

Date	Fitting equation	R^2	RMSE (W/m^2)
June 7	ETfit = −5.9 + 435.5 ∗ exp(−0.047 ∗ (i − 13.65)^2)	0.95	9.4
June 8	ETfit = −8.6 + 353.3 ∗ exp(−0.040 ∗ (i − 14.10)^2)	0.95	8.7
June 9	ETfit = −1.87 + 269.7 ∗ exp(−0.045 ∗ (i − 13.94)^2)	0.95	8.3
June 11	ETfit = 1.10 + 409.9 ∗ exp(−0.047 ∗ (i − 13.96)^2)	0.95	8.7
June 15	ETfit = −7.1 + 432.6 ∗ exp(−0.048 ∗ (i − 14)^2)	0.96	7.7
June 16	ETfit = −4.52 + 441.3 ∗ exp(−0.044 ∗ (i − 14.16)^2)	0.97	8
June 19	ETfit = −1.88 + 519.8 ∗ exp(−0.042 ∗ (i − 14.0)^2)	0.96	11
June 20	ETfit = −2.48 + 698.6 ∗ exp(−0.055 ∗ (i − 14.27)^2)	0.97	9.8
June 21	ETfit = 14.1 + 676.2 ∗ exp(−0.057 ∗ (i − 13.88)^2)	0.93	16
June 24	ETfit = −2.85 + 731.4 ∗ exp(−0.058 ∗ (i − 14.0)^2)	0.94	15.5
June 29	ETfit = 5.6 + 627.5 ∗ exp(−0.053 ∗ (i − 14.28)^2)	0.96	11
June 30	ETfit = 9.8 + 593 ∗ exp(−0.054 ∗ (i − 14.052)^2)	0.91	16.5