Fig. 7. Regression coefficients derived by simple linear regression, significance of the regression coefficients and correlation calculated from the (A) original Landsat TM/ETM+ time series (above left), (B) the spatially degraded 1 km Landsat TM/ETM+ time series (above right), (C) the annually aggregated MEDOKADS NOAA AVHRR 10-day MVC composites from March to September (below left) and (D) the temporally degraded MEDOKADS NOAA AVHRR archive covering the 10-day MVCs corresponding to the Landsat TM/ETM+ time series (below right). Abbreviations used in panels A and C correspond to time profiles shown in Fig. 9 which represent rangeland (R), forest (F), and irrigated (I) and arable (A) land.