Table 4 Candidate predictor variables with units and abbreviation used in the statistical models
Abbreviation | Unit | Description |
|---|---|---|
AT | °C | Annual average air temperature |
AT_sum | °C | Average air temperature in summer (May to October) |
AT_win | °C | Average air temperature in winter (November to April) |
NAO | – | Annual average North Atlantic Oscillation index |
wind | m/s | Annual average wind speed |
wind_sum | m/s | Annual average wind speed in summer (May to October) |
RT | a | Annual average retention time |
V | \(10^6\) m\(^3\) | Annual average reservoir volume |
Qrw | \(10^6\) m\(^3\) | Annual total raw water withdrawal |
Qin | \(10^6\) m\(^3\) | Annual total inflow volume |
Qint50 | doy | Day of the year when the cumulative inflow exceeds 50% of Qin |
Qout | \(10^6\) m\(^3\) | Annual total downstream water withdrawal |