Precipitation correction

Precipitation varies linearly with elevation. Similarly, precipitation varies spa­tially across the catchment, but the amount of local precipitaiton is also a function of the elevation. However, the different areas will have precipitation-elevation relationships. Thus, the elevation corrected precipitation in a cell, when the precipitation is greater than zero, is

(22.3)   

where P_cell is the precipitation in the cell, T_ref is the measured precipitation at a weather station, H_cell is the elevation of the cell, H_ref is the elevation of the weather station, and b_p is the elevation correction factor (lapse rate) for pre­cipitation.

Note The precipitation is a basic input parameter in MIKE SHE, so the precip­itation elevation correction is always available.