ET.MortonCRWE {Evapotranspiration} | R Documentation |

Implementing the Morton CRWE formulation for estimating potential evapotranspiration or shallow lake evaporation.

## S3 method for class 'MortonCRWE' ET(data, constants, ts="monthly", est="potential ET", solar="sunshine hours", Tdew= T, alpha = NULL, message="yes", AdditionalStats="yes", save.csv="no", ...)

`data` |
A list of data which contains the following items (climate variables) required by Morton CRWE formulation: |

`constants` |
A list named |

`ts` |
Must be either |

`solar` |
Must be either |

`est` |
Must be either |

`Tdew` |
Must be |

`alpha` |
Only needed if argument |

`message` |
Must be either |

`AdditionalStats` |
"yes" or "no" indicating whether monthly averaged and annual averaged ET should be calculated. |

`save.csv` |
Must be either |

`...` |
Dummy for generic function, no need to define. |

The type of evapotranspiration calculated can be selected through argument `est`

, please see `Arguments`

for details.
The alternative calculation options can be selected through argument `solar`

and `Tdew`

, please see `Arguments`

for details.

The function generates a list containing the following components:

`ET.Daily` |
Daily aggregated estimations of MortonCRWE potential evapotranspiration or shallow lake evaporation. |

`ET.Monthly` |
Monthly aggregated estimations of MortonCRWE potential evapotranspiration or shallow lake evaporation. |

`ET.Annual` |
Annually aggregated estimations of MortonCRWE potential evapotranspiration or shallow lake evaporation. |

`ET.MonthlyAve` |
Monthly averaged estimations of daily MortonCRWE potential evapotranspiration or shallow lake evaporation. |

`ET.AnnualAve` |
Annually averaged estimations of daily MortonCRWE potential evapotranspiration or shallow lake evaporation. |

`ET_formulation` |
Name of the formulation used which equals to |

`ET_type` |
Type of the estimation obtained which is either |

`message1` |
A message to inform the users about how solar radiation has been calculated by using which data. |

`message6` |
A message to inform the users about if actual dew point temperature has been used in the calculations or alternative calculations has been performed without dew point temperature data. |

Danlu Guo

McMahon, T., Peel, M., Lowe, L., Srikanthan, R. & McVicar, T. 2012. *Estimating actual, potential, reference crop and pan evaporation using standard meteorological data: a pragmatic synthesis*. Hydrology and Earth System Sciences Discussions, 9, 11829-11910.

Morton, F.I. 1983, *Operational estimates of lake evaporation*. Journal of Hydrology, vol. 66, no. 1-4, pp. 77-100.

`processeddata`

,`defaultconstants`

,`constants`

,`ET.MortonCRWE`

# Use processed existing data set and constants from # kent Town, Adelaide data("processeddata") data("constants") # Call ET.MortonCRWE under the generic function ET results <- ET.MortonCRWE(processeddata, constants, ts="monthly", est="potential ET", solar="sunshine hours", Tdew= TRUE, alpha = NULL, message="yes", AdditionalStats="yes", save.csv="no")

[Package *Evapotranspiration* version 1.15 Index]