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000005945 084__ $$2WoS$$aLimnology
000005945 084__ $$2WoS$$aWater Resources
000005945 1001_ $$0P:(DE-Juel1)VDB64886$$aSchröder, T.$$b0$$uFZJ
000005945 245__ $$aA grid refinement approach for a three-dimensional soil-root water transfer model
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000005945 520__ $$aThree dimensional soil-root water transfer models require a fine soil and root discretization in order to obtain accurate results. This goes along with a considerable computational effort. One way of reducing the computational effort is the usage of grid refinement techniques. With such techniques irregular grids are obtained that combine the accuracy of a fine grid resolution with a considerable reduction in computational costs. As a consequence of plant transpiration roots take up water and large soil water potential gradients around roots are created. Especially in these regions a fine soil discretization is needed. The root spatial distribution can therefore be used for refinement of the soil grid, a priori. Simulations show that the accuracy is indeed maintained for a priori refined grids but with reduced computational costs as compared to regular fine grids. Comparison with a well recognized a posteriori error estimate strengthen these results.
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000005945 7001_ $$0P:(DE-HGF)0$$aTang, L.$$b1
000005945 7001_ $$0P:(DE-Juel1)129477$$aJavaux, M.$$b2$$uFZJ
000005945 7001_ $$0P:(DE-Juel1)129548$$aVanderborght, J.$$b3$$uFZJ
000005945 7001_ $$0P:(DE-Juel1)132176$$aKörfgen, B.$$b4$$uFZJ
000005945 7001_ $$0P:(DE-Juel1)129549$$aVereecken, H.$$b5$$uFZJ
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000005945 8567_ $$uhttp://dx.doi.org/10.1029/2009WR007873
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