3/30/2024 0 Comments How to pan in sap 2000![]() O = deep percolation (inside soil runoff) = Irrigation water + precipitation + incoming soil water contribution from surrounding + G.W This technique involves the maintenance of a water budget. The two methods for measurement of evaporation are:ĭirect methods of measurement of evaporation i. ![]() Depending on the type of instrument, the usual measuring accuracy is 0.1 to 0.01 mm. The amount of evaporation should be read in millimeters (WMO, 2003). It can be expressed as the mass or volume of liquid water evaporated per area in unit of time, usually as the equivalent depth of liquid water evaporated per unit of time from the whole area. The rate of evaporation is defined as the amount of water evaporated from a unit surface area per unit of time.
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