Evaporation is a significant loss component from irrigation dams,and although numerous evaporation reduction methodologies exist, their adoption is hindered since they are deemed uneconomical. Any cost/benefit analyses that are done are generally based on poor evaporation estimates due to the complexities involved in evaporation prediction. One area of uncertainty is the significance of night time evaporation. Similarly, the role of wind sheltering on evaporation can be significant but is rarely accounted for in any quantitative assessment. There is therefore a need for improved estimates of evaporation so that water management and investment decisions can have a quantitative basis.
展开▼
