I have calculated flow accumulation (img file) using this DEM (img file), which is 0.5 degree resolution, using arcmap.
I am wondering if the cell accumulation value can directly be translated into drainage areas in square kilometers or not, and if these values reflect true catchment areas?
For example, if the flow accumulation value is 140 and my resolution is 0.5 * 0.5 degree = 56km^2, the upstream area is 140*56 = 7840km^2.
أكثر...
I am wondering if the cell accumulation value can directly be translated into drainage areas in square kilometers or not, and if these values reflect true catchment areas?
For example, if the flow accumulation value is 140 and my resolution is 0.5 * 0.5 degree = 56km^2, the upstream area is 140*56 = 7840km^2.
أكثر...