Compute Green Water Consumption — wapor_calc_green

Green water = min(AETI, Peff) — the portion of actual evapotranspiration sourced from effective precipitation (rainfall stored in the root-zone soil).

Usage

wapor_calc_green_water(
  aeti_seasonal,
  peff_seasonal,
  provenance = NULL,
  compatibility_mode = c("warn", "strict")
)

Arguments

aeti_seasonal: SpatRaster or numeric. Seasonal AETI (mm).
peff_seasonal: SpatRaster or numeric. Seasonal effective precipitation (mm).
provenance: Optional named provenance records for aeti and peff.
compatibility_mode: Missing-metadata policy: "warn" or "strict". Known incompatibilities always stop the calculation.

Value

SpatRaster or numeric. Green water consumption (mm).

References

Falkenmark, M., & Rockström, J. (2004). Balancing water for humans and nature: The new approach in ecohydrology. Earthscan, London.

Chukalla, A. D., Krol, M. S., & Hoekstra, A. Y. (2015). Green and blue water footprint reduction in irrigated agriculture: effect of irrigation techniques, irrigation strategies and mulching. Hydrology and Earth System Sciences, 19(12), 4877-4891.

Examples

wapor_calc_green_water(350, 200)  # 350 mm AETI, 200 mm Peff -> 200 mm green water
#> [1] 200