Temporal Trends and Spatial Patterns of Temperature and Its Extremes over the Beijing-Tianjin Sand Source Region (1960–2014), China
Table 2
Trend slopes for average temperature and extreme temperature indices in the BTSSR during the different stages.
Index
S1
S2
S3
S
Increasing (%)
Decreasing (%)
Units
−0.01
0.77
−0.14
0.34
52
96.23
1.89%
1
0.00
1.89
°C/decade
−0.01
0.76
0.00
0.38
52
98.11
0.00%
1
0.00
1.89
°C/decade
−0.24
0.35
−0.32
0.24
52
84.91
13.21%
1
0.00
1.89
°C/decade
−0.03
0.64
0.29
0.30
51
83.02
13.21%
2
3.77
0.00
°C/decade
0.64
1.28
−1.10
0.45
53
79.25
20.75%
0
0.00
0.00
°C/decade
−0.02
0.47
−0.15
0.27
52
94.34
3.77%
1
1.89
0.00
°C/decade
TN10p
−0.98
−3.40
−0.35
−2.10
3
0.00
5.66%
50
81.13
13.21
days/decade
TX10p
1.38
−2.19
−0.73
−0.96
0
0.00
0.00%
53
56.60
43.40
days/decade
CSDI
−0.22
−0.73
−0.81
−0.80
4
0.00
7.55%
49
49.06
43.40
days/decade
TNn
−0.17
1.61
0.50
0.47
48
52.83
37.74%
5
1.89
7.55
°C/decade
TN90p
−0.17
3.49
−0.12
1.74
51
88.68
7.55%
2
3.77
0.00
days/decade
TX90p
−1.06
2.77
−1.37
1.13
52
54.72
43.40%
1
0.00
0.00
days/decade
WSDI
−0.27
3.52
−1.02
1.11
53
79.25
20.75%
0
0.00
0.00
days/decade
TXx
−0.23
0.36
−0.95
0.16
48
18.87
71.70%
5
0.00
9.43
°C/decade
DTR
−0.43
−0.11
−0.12
−0.17
10
13.21
5.66%
43
66.04
15.09
°C/decade
GSL
1.33
4.41
0.62
3.20
52
79.25
18.87%
1
0.00
1.89
days/decade
S1 is 1960–1978, S2 is 1979–2000, and S3 is 2000–2014; is 0.001 level of significance, is 0.01 level of significance, and is 0.05 level of significance; percentage of stations with a significant () trend (bold), and percentage of stations with an insignificant () trend (italics).
