Research Article

Relative Contribution of the Topographic Influence on the Triangle Approach for Evapotranspiration Estimation over Mountainous Areas

Figure 6

The surface-air temperature differences in the Normalized Difference Vegetation Index -NDVI scatter plots for a clear-sky day (Sept. 26, 2006) from MODIS data over the Taihu Basin. (a) Before the topographic correction, (b) after the topographic correction, (c) before the topographic correction over the selected area, and (d) after the topographic correction over the selected area. The dry (upper red line) and wet (lower red line) edges represent the maximum ET and minimum ET, respectively. The cross points of red lines, estimated by an automatically iterative method [25], were used to determine dry edges.
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