Reference : Maximum entropy production: can it be used to constrain conceptual hydrological models?
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
Maximum entropy production: can it be used to constrain conceptual hydrological models?
Westhoff, Martijn mailto [Université de Liège - ULiège > Département ArGEnCo > Hydraulics in Environmental and Civil Engineering >]
Zehe, E. [> >]
Hydrology and Earth System Sciences
European Geosciences Union
Yes (verified by ORBi)
[en] This work builds on earlier work by Kleidon and Schymanski (2008) who explored the use of the maximum entropy production (MEP) principle for modeling hydrological systems. They illustrated that MEP can be used to determine the partitioning of soil water into runoff and evaporation—which determines hydroclimatic conditions around the Globe—by optimizing effective soil and canopy conductances in a way to maximize entropy production by these fluxes. In the present study, we show analytically that under their assumption of constant rainfall, the proposed principle always yields an optimum where the two conductances are equal, irrespective of rainfall rate, evaporative demand, or gravitational potential. Subsequently, we show that under periodic forcing or periodic variations in one resistance (e.g., vegetation seasonality), the optimal conductance does depend on climatic drivers such as the length of dry spells or the time of closure of stomata.

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Westhoff2014 GRL Importance of temporal variability for hydrological predictions based on MEP.pdfPublisher postprint858.88 kBRequest copy

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