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Influence of time step in the simulation modelling of evapotranspiration

Prasad, Rama (1984) Influence of time step in the simulation modelling of evapotranspiration. In: Sadhana academy proceedings in engineering science, 7 . 91 -118.

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Three simulations of evapotranspiration were done with two values of time step,viz 10 min and one day. Inputs to the model were weather data, including directly measured upward and downward radiation, and soil characteristics. Three soils were used for each simulation. Analysis of the results shows that the time step has a direct influence on the prediction of potential evapotranspiration, but a complex interaction of this effect with the soil moisture characteristic, rate of increase of ground cover and bare soil evaporation determines the actual transpiration predicted. The results indicate that as small a time step as possible should be used in the simulation.

Item Type: Journal Article
Publication: Sadhana academy proceedings in engineering science
Publisher: Indian Academy of Sciences
Additional Information: Copyright for this article belongs to Indian Academy of Sciences.
Keywords: Evapotranspiration;bare soil evaporation;simulation modelling;radiation balance.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 25 Aug 2009 11:25
Last Modified: 19 Sep 2010 05:31
URI: http://eprints.iisc.ac.in/id/eprint/20179

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