Abstract
Reply to comment by H. Vereecken et al. on “Field observations of soil moisture variability across scales”
Highlights
[2] Vereecken et al [2008] suggest that the spatial variability of soil moisture content versus its field mean, as presented in Famiglietti et al [2008], can be largely explained by the shape of soil moisture retention curves for a homogeneous soil, and, for a heterogeneous soil, it is related to soil variability of the constitutive model parameters which control the shape of retention curves
We agree with Vereecken et al [2008] in that, with given uniformly distributed suction head in a homogeneous soil, soil moisture variability peaks in the medium range of mean soil moisture content, and that progressively decreasing unsaturated hydraulic conductivity implied in the moisture retention curve plays an important role in reducing soil moisture variability toward the dry end of field mean soil moisture content
[4] We agree with Vereecken et al [2008] that existing theories in stochastic unsaturated flow can give an important insight into the behavioral features of soil moisture variability under many circumstances
Summary
Vereecken et al on "Field observations of soil moisture variability across scales" Their comments provide the opportunity to reemphasize the complex nature of the processes driving the observed behavior of soil moisture variability across scales presented by Famiglietti et al [2008].
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