CraigGordon: Craig-Gordon model to estimate evaporation isotope values
In jmerc13/LakeIsodrology: Lake isotope hydrology

Description Usage Arguments Details Value

Implements the Craig-Gordon isotope evaporation model for an individual isotope of water, hydrogen or oxygen. Units of the output delta value, δ_{E}, are provided in decimal form.

1	CraigGordon(dL, dA, aELV, eEVL, eK, hn)

`dL`	Delta value of a liquid (e.g., lake), δ_{L} [-].
`dA`	Delta value for the "free" atmosphere δ_{A}, [-].
`eEVL`	Vapor-liquid equilibrium fractionation factor, ε^_{VL}* [-].
`hn`	Relative humidity normalized to saturation vapor pressure at the lake-atmosphere interface, h_{N} [-].
`aeLV`	Equilibrium fractionation factor between liquid and vapor phases, α^_{LV}* [-].
`frac_diff`	Kinetic equilibrium fractionation factor, ε^κ, [-].

The Craig-Gordon model (similar to that defined by Gat et al. (2001)):

δ_{E} = \frac{(δ_{L}/α^*_{LV}) - h_{N}δ_{A} + ε^*_{VL} + ε^{κ}}{(1 - h_{N}) - ε^{κ}}

Gat, JR, WG Mook, AJ Meijer. 2001. Environmental isotopes in the hydrological cycle, principles and applications. Volume II: Atmospheric water. IHP-V, Technical Document 2 (39): 1–113.

Numeric value

jmerc13/LakeIsodrology documentation built on May 5, 2019, 5:52 p.m.