Bias Correction in Wind Direction Forecasting Using the Circular-Circular Regression Method
XU Jing-Jing1,2, HU Fei2, XIAO Zi-Niu3,4, CHENG Xue-Ling2
Figure 1 Circular diagrams of forecast distributions for wind direction at Yangmeishan wind farm, Yunnan Province, China, measured on 26 November 2011: a raw, b observation, and c bias-corrected. The black lines and graphs represent the forecast distributions. The circular absolute error of the day is shown in degrees.