Table 3. Loadings (correlations) of weather variables on principal components (PCs) for each season based on data from March 1975 to February 2010.
|
Summer |
Fall |
Winter |
Spring |
||||||
|---|---|---|---|---|---|---|---|---|---|
| PC1 (50.8) | PC2 (19.3) | PC3 (14.2) | PC1 (56.4) | PC2 (25.5) | PC1 (63.3) | PC2 (20.7) | PC1 (50.3) | PC2 (25.4) | |
| Mean Tmax | 0.714 | 0.549 | −0.166 | −0.290 | 0.930 | −0.506 | 0.862 | 0.819 | 0.087 |
| Sunshine per day | 0.777 | −0.433 | −0.148 | −0.869 | 0.057 | −0.863 | −0.214 | 0.824 | 0.188 |
| Rainfall | −0.752 | 0.385 | −0.155 | 0.771 | 0.387 | 0.848 | 0.141 | −0.134 | 0.979 |
| Rain days | −0.866 | 0.303 | 0.136 | 0.908 | 0.024 | 0.901 | 0.147 | −0.803 | 0.118 |
| Days⩾30 °C | 0.624 | 0.608 | −0.260 | — | — | — | — | — | — |
| Days⩾40 °C | 0.478 | 0.244 | 0.833 | — | — | — | — | — | — |
Loadings⩾0.5 are in bold.
Percent variance represented is shown in parentheses for each component.