Spatiotemporal relations between water budget components and soil water content in a forested tributary catchment
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Title: | Main Title: Spatiotemporal relations between water budget components and soil water content in a forested tributary catchment |
Description: | Abstract: 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 time scale, the residual of the water budget was larger than on the annual time scale, and explained to a moderate extent by θ (R2 = 0.40). Wavelet analysis revealed subweekly time scales, 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. |
Identifier: | 10.1002/2013WR014516 (DOI) |
Citation Advice: | Graf, A., Bogena, H.R., Drüe, C., Hardelauf, H., Pütz, T., Heinemann, G., Vereecken, H., 2014. Spatiotemporal relations between water budget components and soil water content in a forested tributary catchment. Water Resources Research 50, 4837-4857, doi:10.1002/2013WR014516. |
Responsible Party
Creators: | Alexander Graf (Author), Heye Bogena (Author), Clemens Drüe (Author), Horst Hardelauf (Author), Thomas Pütz (Author), Günther Heinemann (Author), Harry Vereecken (Author) |
Funding References: | Deutsche Forschungsgemeinschaft (DFG): CRC/TRR 32: Patterns in Soil-Vegetation-Atmosphere Systems: Monitoring, Modelling and Data Assimilation Helmholtz-Gemeinschaft: TERENO: TERestrial ENvironmental Observatories network of the Helmholtz Association |
Publisher: | Wiley |
Publication Year: | 2014 |
Topic
TR32 Topic: | Soil |
Related Subproject: | Z3 |
Subjects: | Keywords: Soil Moisture, Atmosphere–Land Interaction, Catchment Hydrology, Pattern |
Geogr. Information Topic: | Climatology/Meteorology/Atmosphere |
File Details
Filename: | Graf_et_al_2014_WRR.pdf |
Data Type: | Text - Article |
File Size: | 1.7 MB |
Date: | Available: 12.06.2014 |
Mime Type: | application/pdf |
Data Format: | |
Language: | English |
Status: | Completed |
Constraints
Download Permission: | Only Project Members |
General Access and Use Conditions: | According to the TR32DB data policy agreement. |
Access Limitations: | According to the TR32DB data policy agreement. |
Licence: | [TR32DB] Data policy agreement |
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Specific Information - Publication
Publication Status: | Published |
Review Status: | Peer reviewed |
Publication Type: | Article |
Source: | Water Resources Research |
Source Website: | http://agupubs.onlinelibrary.wiley.com/agu/journal/10.1002/%28ISSN%291944-7973/ |
Issue: | 6 |
Volume: | 50 |
Number of Pages: | 21 (4837 - 4857) |
Metadata Details
Metadata Creator: | Alexander Graf |
Metadata Created: | 26.08.2014 |
Metadata Last Updated: | 26.08.2014 |
Subproject: | Z3 |
Funding Phase: | 2 |
Metadata Language: | English |
Metadata Version: | V50 |
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Page Visits: | 848 |
Metadata Downloads: | 0 |
Dataset Downloads: | 6 |
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