Research Article
Seasonality, Interannual Variability, and Linear Tendency of Wind Speeds in the Northeast Brazil from 1986 to 2011
Table 3
Results of the Mann-Kendall tests of the groups for seasonal and interannual variabilities.
| Group | Period | Average (m/s) | Mann-Kendall test () | Signific. () |
| G1 | Annual | 3.37 | −0.44 | — | DJF (summer) | 3.05 | −0.62 | — | MAM (autumn) | 2.39 | 0.26 | — | JJA (winter) | 3.84 | 0.26 | — | SON (spring) | 4.17 | −1.28 | — |
| G2 | Annual | 4.11 | −1.59 | — | DJF (summer) | 3.91 | −1.50 | — | MAM (autumn) | 3.49 | −1.28 | — | JJA (winter) | 4.34 | −1.54 | — | SON (spring) | 4.70 | −0.22 | — |
| G3 | Annual | 1.35 | −4.14 |
<0.001 | DJF (summer) | 1.11 | −3.61 | <0.001 | MAM (autumn) | 1.12 | −4.01 | <0.001 | JJA (winter) | 1.59 | −2.73 | <0.01 | SON (spring) | 1.58 | −3.44 | <0.001 |
| G4 | Anual | 2.14 | −4.10 | <0.001 | DJF (summer) | 1.99 | −2.64 | <0.01 | MAM (autumn) | 1.64 | −2.82 | <0.01 | JJA (winter) | 2.16 | −2.64 | <0.01 | SON (spring) | 2.75 | −2.51 | <0.05 |
| G5 | Anual | 2.83 | −4.14 | <0.001 | DJF (summer) | 2.90 | −4.06 | <0.001 | MAM (autumn) | 2.46 | −3.09 | <0.01 | JJA (winter) | 2.64 | −3.92 | <0.001 | SON (spring) | 3.33 | −3.26 | <0.01 |
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