Correlation between the nine explanatory variables constructed for the model and between snow density (y) and the covariates
Covariate . | Description . | y . | x1 . | x2 . | x3 . | i4 . | x5 . | x6 . | x7 . | x8 . | x9 . |
---|---|---|---|---|---|---|---|---|---|---|---|
x1 | Snow depth | 0.48 | 1.00 | ||||||||
x2 | Snow age (DOY) | 0.39 | 0.25 | 1.00 | |||||||
x3 | Elevation (masl) | 0.20 | 0.39 | 0.00 | 1.00 | ||||||
x4 | Degree days when Tt >0 °C | 0.16 | −0.05 | 0.40 | −0.30 | 1.00 | |||||
x5 | Wind days when Tt < 0 °C, W > 2 m/s | 0.24 | 0.21 | 0.42 | 0.32 | −0.06 | 1.00 | ||||
x6 | Snowfall when W > 0 m/s | 0.29 | 0.20 | 0.23 | 0.34 | −0.02 | 0.53 | 1.00 | |||
x7 | Ratio snow precipitation | −0.05 | 0.08 | 0.09 | 0.34 | −0.53 | 0.15 | 0.09 | 1.00 | ||
x8 | Ratio mixed precipitation | 0.07 | −0.04 | −0.09 | −0.17 | 0.34 | −0.02 | 0.08 | −0.75 | 1.00 | |
x9 | Ratio rain precipitation | 0.03 | −0.08 | 0.03 | −0.35 | 0.60 | −0.19 | −0.19 | −0.69 | 0.33 | 1.00 |
Covariate . | Description . | y . | x1 . | x2 . | x3 . | i4 . | x5 . | x6 . | x7 . | x8 . | x9 . |
---|---|---|---|---|---|---|---|---|---|---|---|
x1 | Snow depth | 0.48 | 1.00 | ||||||||
x2 | Snow age (DOY) | 0.39 | 0.25 | 1.00 | |||||||
x3 | Elevation (masl) | 0.20 | 0.39 | 0.00 | 1.00 | ||||||
x4 | Degree days when Tt >0 °C | 0.16 | −0.05 | 0.40 | −0.30 | 1.00 | |||||
x5 | Wind days when Tt < 0 °C, W > 2 m/s | 0.24 | 0.21 | 0.42 | 0.32 | −0.06 | 1.00 | ||||
x6 | Snowfall when W > 0 m/s | 0.29 | 0.20 | 0.23 | 0.34 | −0.02 | 0.53 | 1.00 | |||
x7 | Ratio snow precipitation | −0.05 | 0.08 | 0.09 | 0.34 | −0.53 | 0.15 | 0.09 | 1.00 | ||
x8 | Ratio mixed precipitation | 0.07 | −0.04 | −0.09 | −0.17 | 0.34 | −0.02 | 0.08 | −0.75 | 1.00 | |
x9 | Ratio rain precipitation | 0.03 | −0.08 | 0.03 | −0.35 | 0.60 | −0.19 | −0.19 | −0.69 | 0.33 | 1.00 |