ET0TempModels provides 10 temperature-based empirical models for estimating daily reference evapotranspiration (ET0), along with the FAO Penman-Monteith standard method as the reference, statistical evaluation metrics, and visualization tools.
Install from CRAN:
install.packages("ET0TempModels")Or install the development version from GitHub:
# install.packages("devtools")
devtools::install_github("ajaysatpute/ET0TempModels")library(ET0TempModels)
# Compute ET0 using all 10 temperature-based models for a single day
result <- et0_temp_all(
Tmin = 15, Tmax = 30,
RH_morning = 90, RH_evening = 40,
u2 = 1.5, n = 8, J = 172,
lat = 25.43, z = 216
)
# Evaluate model performance against FAO-PM
data(jhansi_weather)
full <- et0_temp_all(
Tmin = jhansi_weather$Tmin,
Tmax = jhansi_weather$Tmax,
RH_morning = jhansi_weather$RH_morning,
RH_evening = jhansi_weather$RH_evening,
u2 = jhansi_weather$WS,
n = jhansi_weather$SSH,
J = jhansi_weather$J,
lat = 25.43, z = 216
)
metrics <- evaluate_models(full$FAO_PM, full[, -1])
print(metrics)| # | Model | Function |
|---|---|---|
| Reference | FAO Penman-Monteith | et0_fao_pm() |
| 1 | Blaney-Criddle (1950) | et0_blaney_criddle() |
| 2 | Schendel (Bormann, 2011) | et0_schendel() |
| 3 | Hargreaves-Samani (1985) | et0_hargreaves_samani() |
| 4 | Linacre (1977) | et0_linacre() |
| 5 | Tabari-Talaee 1 (2011) | et0_tabari_talee1() |
| 6 | Tabari-Talaee 2 (2011) | et0_tabari_talee2() |
| 7 | Droogers-Allen (2002) | et0_droogers_allen() |
| 8 | Berti et al. (2014) | et0_berti() |
| 9 | Dorji et al. (2016) | et0_dorji() |
| 10 | Baier-Robertson (1965) | et0_baier_robertson() |
citation("ET0TempModels")Singh, A.K., Satpute, A.N., Gupta, G., Ghosh, A., & Barman, S. (2026). A Comprehensive Multi-Scale Evaluation and Ranking of 30 Empirical Models for Reference Evapotranspiration Estimation in a Data-Scarce Semi-Arid Region. Journal of Hydrology: Regional Studies.
GPL (>= 3)