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001 | 171809 | ||
005 | 20230310131400.0 | ||
024 | 7 | _ | |a 10.1002/2013WR014516 |2 doi |
024 | 7 | _ | |a 0043-1397 |2 ISSN |
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037 | _ | _ | |a FZJ-2014-05371 |
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100 | 1 | _ | |a Graf, Alexander |0 P:(DE-Juel1)129461 |b 0 |e Corresponding Author |u fzj |
245 | _ | _ | |a Spatiotemporal relations between water budget components and soil water content in a forested tributary catchment |
260 | _ | _ | |a Washington, DC |c 2014 |b AGU |
336 | 7 | _ | |a article |2 DRIVER |
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336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
520 | _ | _ | |a We examined 3 years of measured daily values of all major water budget components (precipitation P, potential evapotranspiration PET, actual evapotranspiration ET, and runoff R) and volumetric soil water content θ of a small, forested catchment located in the west of Germany. The spatial distribution of θ was determined from a wireless sensor network of 109 points with 3 measurement depths each; ET was calculated from eddy covariance tower measurements. The water budget was dominantly energy-limited, with ET amounting to approximately 90 % of PET, and a runoff ratio R/P of 56 %. P, ET and R closed the long-term water budget with a residual of 2% of precipitation. On the daily timescale, the residual of the water budget was larger than on the annual timescale, and explained to a moderate extent by θ (R² = 0.40). Wavelet analysis revealed sub-weekly timescales, presumably dominated by unaccounted fast-turnover storage terms such as interception, as a major source of uncertainty in water balance closure. At weekly resolution, soil water content explained more than half (R² = 0.62) of the residual. By means of combined empirical orthogonal function and cluster analysis, two slightly different spatial patterns of θ could be identified that were associated with mean θ values below and above 0.35 cm³/cm³, respectively. The timing of these patterns as well as the varying coherence between PET, ET and soil water content responded to changes in water availability, including a moderate response to the European drought in spring 2011. |
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700 | 1 | _ | |a Hardelauf, Horst |0 P:(DE-Juel1)129466 |b 3 |u fzj |
700 | 1 | _ | |a Pütz, Thomas |0 P:(DE-Juel1)129523 |b 4 |u fzj |
700 | 1 | _ | |a Heinemann, Günther |0 P:(DE-HGF)0 |b 5 |
700 | 1 | _ | |a Vereecken, Harry |0 P:(DE-Juel1)129549 |b 6 |u fzj |
773 | _ | _ | |a 10.1002/2013WR014516 |g Vol. 50, no. 6, p. 4837 - 4857 |0 PERI:(DE-600)2029553-4 |n 6 |p 4837 - 4857 |t Water resources research |v 50 |y 2014 |x 0043-1397 |
856 | 4 | _ | |u https://juser.fz-juelich.de/record/171809/files/FZJ-2014-05371.pdf |y OpenAccess |
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