Mapping Biophysical Parameters for Land Surface Modeling over the Continental US Using MODIS and Landsat

Figure 1

Flow chart of data fusion. First, the 30 m impervious surface area (ISA) is aggregated to the CMG (a) and then superimposed on the 500 m MODIS land cover (b) to produce a hybrid CMG containing fractions of vegetation cover from MODIS and fractions of ISA from the Landsat 30 m (d). Note the difference in the fraction of LC8 between (a) and (b) and its proportional redistribution over other classes in (d) (see text for details). Second, we combine the 500 m MODIS NDVI (c) with the 500 m MODIS land cover (b) to produce the average NDVI for each land cover class in the CMG (e). NDVI over the urban areas was scaled using Landsat retrieved NDVI values (see text for details).