Description Usage Arguments Value Author(s) References Examples

It is a model based on the postulates of Budyko, which stated that not only does the actual evapotranspiration depend on potential evapotranspiration, but it is also constrained by water availability (Budyko, 1974).

1 | ```
funFU(PET, P, alpha)
``` |

`PET` |
is the variable which will be inserted as the numerator in Fu's function. It can be a value or a numeric vector, in which case it must have the same length as the denominator vector. |

`P` |
is the variable which will be inserted as the numerator in Fu's function. It can be a value or a numeric vector, in which case it must have the same length as the numerator vector. |

`alpha` |
parameter of Fu's model which controls the evapotranspiration efficiency, yet it is named depending on the variables used as numerator and denominator. It must be a unique value of type double. |

a value or a vector (depending on which kind of data was introduced for numerator and denominator).

Nicolas Duque Gardeazabal <nduqueg@unal.edu.co>

Pedro Felipe Arboleda Obando <pfarboledao@unal.edu.co>

Carolina Vega Viviescas <cvegav@unal.edu.co>

David Zamora <dazamoraa@unal.edu.co>

Water Resources Engineering Research Group - GIREH Universidad Nacional de Colombia - sede Bogota

Zhang, L., Potter, N., Hickel, K., Zhang, Y., & Shao, Q. (2008). "Water balance modeling over variable time scales based on the Budyko framework – Model development and testing. Journal of Hydrology", 360(1-4), 117–131.

Budyko. (1974). "Climate and life". New York: Academic Press, INC.

1 2 3 4 | ```
PET <- 1000
P <- 2000
alpha <- 0.69 # value used by Zhang et al. (2008)
funFU(PET, P, alpha)
``` |

Embedding an R snippet on your website

Add the following code to your website.

For more information on customizing the embed code, read Embedding Snippets.