Research Article
Trend and Abrupt Regime Shift of Temperature Extreme in Northeast China, 1957–2015
Table 4
Seasonal mean variations of temperature extreme indices over Northeast China.
| | Songnen Plain | Sanjiang Plain | Liao River Plain | Changbai Mountains | The Greater Khingan Range | The Lesser Khingan Range | Northeast China |
| TN10p | Winter | −1.76 | −1.37 | −2.38 | −2.84 | −1.28ns | −1.73ns | −2.24 | Spring | −1.68 | −1.94 | −2.37 | −2.55 | −1.62 | −1.86 | −2.01 | Summer | −1.28 | −1.49 | −0.99 | −1.16 | −1.65 | −1.55 | −1.23 | Autumn | −1.25 | −0.95 | −1.75 | −1.17 | −1.18 | −0.60ns | −1.21 |
| TNn | Winter | 0.37ns | 0.41 | 0.60 | 0.55 | 0.50 | 0.61 | 0.48 | Spring | 0.32ns | 0.33ns | 0.63 | 0.40 | 0.30ns | 0.48 | 0.40 | Summer | 0.19ns | 0.31 | 0.20ns | 0.17ns | 0.45 | 0.19ns | 0.20 | Autumn | 0.20ns | 0.33 | 0.35 | 0.24ns | 0.40 | −0.06ns | 0.18 |
| TXn | Winter | 0.23ns | 0.26ns | 0.41 | 0.27ns | 0.54 | 0.82 | 0.24 | Spring | 0.20ns | 0.25ns | 0.28 | 0.19ns | 0.09ns | 0.45 | 0.22 | Summer | 0.14ns | 0.08ns | 0.07ns | 0.11ns | 0.24 | 0.03ns | 0.10ns | Autumn | 0.14ns | 0.27ns | 0.12ns | 0.08ns | 0.28ns | 0.17ns | 0.07ns |
| TN90p | Winter | 1.98 | 1.24 | 2.05 | 1.21 | 1.61ns | 0.83ns | 1.50 | Spring | 2.87 | 2.31 | 2.24 | 1.59 | 2.18 | 1.60 | 1.83 | Summer | 2.40 | 2.35 | 1.34 | 1.84 | 2.10 | 2.16 | 2.14 | Autumn | 1.51 | 1.23 | 1.32 | 0.99 | 2.15 | 0.81ns | 1.28 |
| TNx | Winter | 0.40 | 0.36 | 0.45 | 0.32 | 0.37 | 0.045 | 0.030 | Spring | 0.49 | 0.45 | 0.41 | 0.34 | 0.50 | 0.032 | 0.040 | Summer | 0.19 | 0.21 | 0.10ns | 0.09ns | 0.41 | 0.011ns | 0.013 | Autumn | 0.35 | 0.33 | 0.22 | 0.23 | 0.43 | 0.008ns | 0.024 |
| TXx | Winter | −0.01ns | 0.02ns | 0.17ns | 0.10ns | 0.08ns | 0.004ns | 0.003ns | Spring | 0.24 | 0.19ns | 0.23 | 0.24 | 0.38ns | 0.008ns | 0.023 | Summer | 0.22 | 0.06ns | 0.01ns | −0.01ns | 0.18ns | 0.026ns | 0.001 | Autumn | 0.14ns | 0.24 | 0.12ns | 0.10ns | 0.24ns | 0.028ns | 0.011ns |
|
|
; ; ; ns = not significant. |