Hydrology and Earth System Sciences www.hydrol-earth-syst-sci.net 1027-5606 1607-7938 13 10 2009 10.5194/hess-13-1953-2009 http://www.hydrol-earth-syst-sci.net/13/1953/2009/ http://www.hydrol-earth-syst-sci.net/13/1953/2009/hess-13-1953-2009.html http://www.hydrol-earth-syst-sci.net/13/1953/2009/hess-13-1953-2009.pdf 1953 1966 2009-10-23 Field-scale apparent hydraulic parameterisation obtained from TDR time series and inverse modelling U. Wollschläger ute.wollschlaeger@iup.uni-heidelberg.de T. Pfaff K. Roth Institute of Environmental Physics, Heidelberg University, 69120 Heidelberg, Germany now at: Computer Graphics Lab, ETH Zurich, 8092 Zurich, Switzerland Due to the large heterogeneity in the hydraulic properties of natural soils, estimation of field-scale hydraulic parameters is difficult. Past research revealed that data from accurate but small-scale laboratory measurements could hardly ever be transferred to the field scale. 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