Wind Speed-Independent Two-Source Energy Balance Model Based on a Theoretical Trapezoidal Relationship between Land Surface Temperature and Fractional Vegetation Cover for Evapotranspiration Estimation
Table 5
Sensitivity Si (%) of LE estimates to each input.
Variations (K/%)
−20 (−2)
−15 (−1.5)
−10 (−1)
−5 (−0.5)
5 (0.5)
10 (1)
15 (1.5)
20 (2)
Tr
15.9
12.1
8.1
4.1
−4.2
−8.5
−12.8
−17.2
Ta
−22.7
−16.6
−10.8
−5.3
5.1
9.9
14.5
18.9
α
5.3
3.9
2.6
1.3
−1.3
−2.6
−3.9
−5.1
rh
3.7
2.9
2.0
1.0
−1.1
−2.4
−3.7
−5.2
EVI
−4.5
−3.2
−2.0
−0.9
0.8
1.3
1.7
1.9
ε
6.2
4.6
3.0
1.5
−1.5
−3.0
−4.4
−5.8
Gf3
−2.5
−1.9
−1.3
−0.6
0.7
1.3
2.0
2.7
Gf4
2.7
2.1
1.4
0.7
−0.8
−1.7
−2.6
−3.5
α1
−0.3
−0.2
−0.1
−0.1
0.1
0.1
0.2
0.3
α2
0.1
0.0
0.0
0.0
0.0
0.0
0.0
−0.1
α3
−1.9
−1.4
−1.0
−0.5
0.5
1.0
1.5
2.0
α4
1.9
1.5
1.0
0.5
−0.5
−1.1
−1.7
−2.3
z0mc
−0.6
−0.4
−0.3
−0.1
0.1
0.3
0.4
0.5
h
0.2
0.1
0.1
0.1
−0.1
−0.3
−0.4
−0.4
rcm
0.2
0.2
0.1
0.1
−0.1
−0.1
−0.2
−0.3
rcx
−0.2
−0.1
−0.1
0.0
0.0
0.0
0.1
0.1
Variations of Tr and Ta in K and other variables in percentage (%).
