Figure 1.
(a) Mean difference from the 1984–96 NDVI mean for each scene from the c.1990 Landsat dataset; (b) Mean difference from the 1999–2002 NDVI mean for each scene from the c.2000 Landsat dataset; (c) Mean NDVI standard deviation over the 1984–96 period for each scene from the c.1990 Landsat dataset; (d) Mean NDVI standard deviation over the 1999–2002 period for each scene from the c.2000 Landsat dataset; (e) NDVI difference from the mean divided by the standard deviation for the 1984–96 period for each scene from the c.1990 Landsat dataset; ( f ) NDVI difference from the mean divided by the standard deviation for the 1999–2002 period for each scene from the c.2000 Landsat dataset.