Modeling Evapotranspiration Response to Climatic Forcings Using Data-Driven Techniques in Grassland Ecosystems
Table 2
Daily statistical parameters of flux tower measured environmental variables including air temperature (), net radiation (), relative humidity (), soil temperature (), and evapotranspiration (ET) in the whole period.
Period
Variable
AT-Neu
6.68
22.96
−17.63
8.19
2.24
−0.29
0.80
4.24
16.51
−6.44
5.33
1.97
0.16
0.88
79.80
99.98
44.36
10.98
2.52
−0.46
−0.59
8.71
21.28
−2.56
6.86
1.50
0.01
0.78
ET
1.29
6.78
−0.32
1.33
2.75
0.87
1.00
CA-Let
6.48
28.57
−31.89
10.37
3.10
−0.58
0.59
6.17
19.18
−15.83
5.91
1.93
0.38
0.76
60.40
99.04
16.94
16.48
2.18
0.04
−0.19
7.35
24.52
−10.06
7.99
1.81
0.18
0.61
ET
0.81
5.96
−0.50
1.01
6.68
1.92
1.00
DE-Gri
8.35
27.83
−18.02
7.80
2.37
−0.25
0.76
5.08
19.76
−4.25
5.34
2.17
0.55
0.90
77.98
100.00
39.22
10.60
2.63
−0.31
−0.63
9.68
24.32
−0.84
6.10
1.83
0.03
0.75
ET
0.96
4.50
−0.61
0.98
3.33
1.04
1.00
HU-Bug
10.20
30.15
−18.72
8.98
2.28
−0.22
0.72
5.81
18.26
−3.90
5.38
1.88
0.39
0.83
76.28
99.66
38.88
12.01
2.61
−0.38
−0.46
10.84
26.03
−3.11
7.21
1.78
0.05
0.70
ET
1.28
5.96
−0.06
1.10
3.68
1.08
1.00
Note. The units of ,,,, and ET are °C, mol m−2, %, °C, and mm day−1, respectively. ,,,,, and refer to the mean, maximum, minimum, standard deviation, kurtosis, and skewness of each variable, respectively. refers to the correlation coefficient between each variable and ET.
