Fig. 3
From: Exposed soil and mineral map of the Australian continent revealing the land at its barest
Spectral responses through time at a specific pixel location compared to the estimated Barest Earth spectra. The pixel location is identified with tick markers in Fig. 3. The first plot shows the observation spectra through time with the Barest Earth (magenta) and Most Vegated (green) shown with dashed lines, the second plot shows the observation spectra but scaled (as \(x/||x||\) for observation vector x to remove parallel albedo shifts due to atmospheric effects). The Most Vegated output is generated by inverting the Bare Earth algorithm to get the opposite response. The third plot shows the normalised difference vegetation index (NDVI) time series of the observations coloured using the Barest Earth weighting model. Horizontal lines show the normalised difference vegetation index of the Barest Earth (magenta) and the Most Vegated (green). Vertical lines show the presence of missing data due to cloud masking or LS7 SLC-off gaps.
