DallAmico: Compute total water content, ice content, and liquid water...
In geocryology/PermafrostTools: PermafrostTools

Description Usage Arguments Details Value Author(s) Examples

Compute total water content, ice content, and liquid water content of soil based on van Genuchten parameters, temperature and soil matric potential.

1	DallAmico(alpha, n, theta.sat, theta.res, Tg, Tm, psi0)

`alpha`	van Genuchten alpha [mm-1]
`n`	van Genuchten n [-]
`theta.sat`	Saturated water content [m3/m3]
`theta.res`	Residual water content [m3/m3]
`Tg`	Ground temperature [K], can be a vector.
`Tm`	Melting temperature of water at atmospheric pressure [K], usually 273.15 K.
`psi0`	Soil matric potential [m]. Matric potential of 0 corresponds to saturated conditions, smaller values imply unsaturated conditions.

Details are found in: Dall’Amico, M., Endrizzi, S., Gruber, S., & Rigon, R. (2011). A robust and energy-conserving model of freezing variably-saturated soil. The Cryosphere, 5(2), 469-484. doi:10.5194/tc-5-469-2011

Typical values of van Genuchten parameters are found in Table 2 of Gubler, S., Endrizzi, S., Gruber, S., & Purves, R. S. (2013). Sensitivities and uncertainties of modeled ground temperatures in mountain environments. Geoscientific Model Development, 6(4), 1319–1336. doi:10.5194/gmd-6-1319-2013

Returns a data frame with three columns: theta.v (total water content, relative to soil volume, as a function of psi0), theta.i (ice content, relative to soil volume), and theta.w (liquid water content, relative to soil volume. The data frame has as manu rows as Tg has elements.

Stephan Gruber <stephan.gruber@carleton.ca>