Title: A Simplified Parameterization of the Monthly Topsoil Water Budget
Authors: PISTOCCHI AlbertoBOURAOUI FaycalBITTELLI M.
Citation: WATER RESOURCES RESEARCH vol. 44 p. W12440-1 W12440-21
Publisher: AMER GEOPHYSICAL UNION
Publication Year: 2008
JRC N°: JRC47467
ISSN: 0043-1397
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC47467
DOI: 10.1029/2007WR006603
Type: Articles in Journals
Abstract: In this paper we propose simple equations for the different components of the topsoil water budget (runoff, infiltration, evapotranspiration, and soil moisture). These equations are derived by interpretation of the trends of average monthly soil moisture, and monthly aggregated infiltration, runoff and evapotranspiration obtained from the output of a daily hydrologic model of topsoil simulating representative climate and soil conditions across Europe. The equations we propose imply calculations of the same level of complexity as Thornthwaite¿s method, while retaining consistency with the daily step model and capturing the non-linearities of some processes. Therefore they can be proposed as a screening level tool for the analysis of soil water budget in practical applications. The method only requires input on monthly precipitation, potential evapotranspiration (PET), and basic soil properties related to physically meaningful quantities. The proposed method provides results at monthly steps, which are fairly consistent with other, computationally more demanding models.
JRC Institute:Institute for Environment and Sustainability

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