ET0TempModels
Evapotranspiration Estimation Using Temperature-Based Models
Provides functions to estimate daily reference evapotranspiration
(ET0) using 10 temperature-based empirical models, with the Food and
Agriculture Organization (FAO) Penman-Monteith method included as the
standard reference for model comparison. Includes statistical evaluation
metrics, such as Nash-Sutcliffe efficiency (NSE), root mean square error
(RMSE), mean absolute error (MAE), and mean bias error (MBE), and
visualization tools (scatter plots and Taylor diagrams). Based on
Singh et al. (2026)
ET0TempModels
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.
Installation
Install from CRAN:
install.packages("ET0TempModels")
Or install the development version from GitHub:
# install.packages("devtools")
devtools::install_github("ajaysatpute/ET0TempModels")
Quick Start
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)
Models Included
| # | 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
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.
License
GPL (>= 3)