Calculates the potential evapotranspiration using the Pristley-Taylor model. Two are the modes:
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with hourly time-step
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with daily time-step
In the first case the model uses the ground heat flux (G) computed as function of net radiation. In the second case G is neglected.
Input files
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the .csv file (YYYY-MM-DD HH:MI, temperature) containing the temperatures time series. In case of no-values, a standard values of temperature is used (e.g. the mean annual temperature).
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the .csv file (YYYY-MM-DD HH:MI, net_radiation) containing the net radiation time series. In case of no-values, a standard values of radiation is used (e.g. the mean annual value)
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the .csv file (YYYY-MM-DD HH:MI, atm_pressure) containing the atmospheric pressure time series. In case of not-values, a standard values of atmospheric pressure is used (101.31 kPa)
Input Parameters
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The value of the Pristley-Taylor constant
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The value of Gm: the morning coefficient multiplying net radiation to estimate G during the morning
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The value of Gn: the nigth coefficient multiplying net radiation to estimate G during the nigth
Output
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the .csv file containing the potential evapotranspiration for every points selected for estimation
Notes
If you use the present model, the authors kindly ask to cite:
Formetta,G., Mantilla,R., Franceschi,S., Antonello,A., and Rigon,R.: The JGrass-NewAge system for forecasting and managing the hydrological budgets at the basin scale: models of flow generation and propagation/routing, Geosci. Model Dev., 4, 943-955, doi:10.5194/gmd-4-943-2011, 2011.
http://www.geosci-model-dev.net/4/943/2011/gmd-4-943-2011.html
where the model is explained with more detail.