cal_soilHeatFlux_general: Calculating soil heat flux (G) for general

In simET: Tools for Simulation of Evapotranspiration of Field Crops and Soil Water Balance

Calculating soil heat flux (G) for general

Description

Complex models are available to describe soil heat flux. Because soil heat flux is small compared to Rn, particularly when the surface is covered by vegetation and calculation time steps are 24 hours or longer, a simple calculation procedure is presented here for long time steps, based on the idea that the soil temperature follows air temperature.

Usage

cal_soilHeatFlux_general(cs, T1, T0, delta_t, delta_z)

Arguments

cs	soil heat capacity [MJ m-3 degrees Celsius-1].
T1	air temperature at time i [degrees Celsius].
T0	air temperature at time i-1 [degrees Celsius].
delta_t	length of time interval [day].
delta_z	effective soil depth [m].

Value

A vector for soil heat flux [MJ m-2 day-1]

Note

Complex models are available to describe soil heat flux. Because soil heat flux is small compared to Rn, particularly when the surface is covered by vegetation and calculation time steps are 24 hours or longer, a simple calculation procedure is presented here for long time steps, based on the idea that the soil temperature follows air temperature.

References

Allen, R. G., Pereira, L. S., Raes, D., & Smith, M. FAO Irrigation and drainage paper No. 56. Rome: Food and Agriculture Organization of the United Nations, 1998.

simET documentation built on Aug. 19, 2023, 5:09 p.m.