Articles | Volume 20, issue 6
https://doi.org/10.5194/hess-20-2309-2016
https://doi.org/10.5194/hess-20-2309-2016
Technical note
 | 
15 Jun 2016
Technical note |  | 15 Jun 2016

Technical note: Improving the AWAT filter with interpolation schemes for advanced processing of high resolution data

Andre Peters, Thomas Nehls, and Gerd Wessolek

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Short summary
The AWAT (Adaptive Window and Adaptive Threshold) filter routine for high-resolution lysimeter data is improved. The threshold scheme with original step interpolation yields unrealistic fluxes for high temporal resolution. Improvement applies linear and spline interpolation schemes so that fluxes in high temporal resolution are automatically calculated. The spline scheme allows continuous differentiability of filtered data so that any output resolution for the fluxes is sound.