Table 2 Description of temperature extreme indices used in this study.
Index ID | Index name | Definition | Unit |
|---|---|---|---|
SU | Summer days | Number of days when Tmax > 25 °C | Days |
ID | Ice days | Number of days when Tmax < 0 °C | Days |
FD | Frost days | Number of days when Tmin < 0 °C | Days |
DTR | Daily temperature range | Tmax–Tmin | °C |
GSL | Growing season length | Annual number of days between the first occurrence of 6 consecutive days with Tmean > 5 °C and the first occurrence of 6 consecutive days with Tmean < 5 °C | Days |
GDD | Growing degree days | A measure of heat accumulation to predict plant and animal developmental rates | Degree/days |
