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Actual evapotranspiration assessment by means of a coupled energy/hydrologic balance model: Validation over an olive grove by means of scintillometry and measurements of soil water contents
- Source :
- Journal of Hydrology. 392:70-82
- Publication Year :
- 2010
- Publisher :
- Elsevier BV, 2010.
-
Abstract
- Summary A coupled energy/hydrologic model was applied to simulate the exchange of energy and water in the soil–plant-atmosphere system (SPA). The model, which uses a “two-source” approach to estimate the energy fluxes, and the “force-restore” approach to represent the water balance, was validated by means of evapotranspiration measurements collected via scintillometry and soil moisture measurements collected via time domain reflectometry (TDR) in a Sicilian olive grove. The comparison between measured and estimated fluxes values at an hourly scale showed good agreement. Additional comparisons on a daily timescale confirmed the model’s applicability for quantifying crop water requirements. Also in terms of daily evapotranspiration and soil water content values, the obtained results confirmed the model’s applicability for those practical applications aiming to quantify the crop water requirement. Moreover, further studies should be conducted to test the feasibility of using this model for long term simulations over a broad range of conditions.
- Subjects :
- Actual evapotranspiration
Hydrology
Scintillometer measurements
Moisture
Scale (ratio)
Settore ICAR/02 - Costruzioni Idrauliche E Marittime E Idrologia
Energy balance
Scintillometer measurement
Hydrologic balance
Water balance
Hydrology (agriculture)
Evapotranspiration
Olive grove
Surface energy fluxes
Soil water
Settore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestali
Environmental science
Surface energy fluxe
Water content
Water Science and Technology
Subjects
Details
- ISSN :
- 00221694
- Volume :
- 392
- Database :
- OpenAIRE
- Journal :
- Journal of Hydrology
- Accession number :
- edsair.doi.dedup.....3e18c9f6f198266a160cacd856421f77
- Full Text :
- https://doi.org/10.1016/j.jhydrol.2010.07.046