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Sensitivity study and validation of a land surface parameterization using the HAPEX-MOBILHY data set by Bruno Jacquemin; Jol Noilhan is a Environmental Science article available to read on EtoBox.

What is Sensitivity study and validation of a land surface parameterization using the HAPEX-MOBILHY data set about?

A simple parameterization of land surface processes, amenable to the structure of a twolayer soil model, including a representation of the vegetation, has been designed for use in meteorological models. Prior to implementation in a mesoscale model, it is necessary to check the components and to verify the good working order of the parameterization as a whole. The aims of this paper then are: (i) evaluation and a sensitivity study of the various components of the model, specifying the needed accuracy for the parameters; (ii) micrometeorological validation of the model against the HAPEX-MOBILHY data set. First, we present the basic scheme. The focus is on the parameterization of surface resistance, and especially on its relationship with soil moisture. A sensitivity study is then performed through a set of one-dimensional simulations which allow a full interaction between the ground and the atmosphere. Above bare ground, it is shown that both soil texture and initial moisture greatly influence the outcome of the simulation. Latent heat flux ranges from that associated with potential evaporation through a switch-like behavior to that of dry soil. Next, the effects of transpiring veget

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Author

Bruno Jacquemin; Jol Noilhan

Publisher

Springer; Springer-Verlag; Kluwer Academic Publishers; Springer Science and Business Media LLC (ISSN 0006-8314)

Published

1990

Language

EN

Field

Environmental Science (Physical Sciences)