Comparison of the Applicability of Two Reanalysis Products in Estimating Tall Tower Wind Based on Multiple Linear Regression and Artificial Neural Network in South China

Figure 7

The wind rose plots for the observations, the ERA5 predictions and the MERRA2 predictions based on the ANN downscaling method. (a) T1-Obs. (b) T1-ERA5. (c) T1-MERRA2. (d) T2-Obs. (e) T2-ERA5. (f) T2-MERRA2. (g) T3-Obs. (h) T3-ERA5. (i) T3-MERRA2. (j) T4-Obs. (k) T4-ERA5. (l) T4-MERRA2.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)

(k)

(l)