Within-Field Variability of Bare Soil Evaporation Derived from Eddy Covariance Measurements
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| Title: | Main Title: Within-Field Variability of Bare Soil Evaporation Derived from Eddy Covariance Measurements |
| Description: | Abstract: Bare soil evaporation was measured with the eddy-covariance method at the Selhausen field site. The site has a distinct gradient in soil texture, with a considerably higher stone content at the upper part of the field. We investigated the effect of different soil properties in the upper and lower parts of the field on evaporation using eddy covariance (EC) measurements that were combined with a footprint model. Because only one EC station was available, simultaneous evaporation measurements from the two field parts were not available. Therefore, measurements were put into the context of meteorologic and soil hydrologic conditions. Meteorologic conditions were represented by the potential evaporation, i.e., the maximum evaporation that is determined by the energy available for evaporation. The influence of precipitation and soil hydrologic conditions on the actual evaporation rate was represented by a simple soil evaporation model. The amount of water that could be evaporated at the potential rate from the lower part of the field was found to be large and considerably larger than from the upper part of the field. The difference in evaporation led to threefold larger predicted percolation or runoff in the upper than the lower part of the field. Simulations using the Richards equation were able to reproduce the differences in evaporation between the lower and upper parts of the field and relate them to the different groundwater table depths in the two parts of the field. |
| Identifier: | 10.2136/vzj2009.0159 (DOI) |
Responsible Party
| Creators: | Jan Vanderborght (Author), Alexander Graf (Author), Christian Steenpass (Author), Benedikt Scharnagl (Author), Nils Prolingheuer (Author), Michael Herbst (Author), Harrie-Jan Hendricks-Franssen (Author) |
| Publisher: | Soil Science Society of America |
| Publication Year: | 2013 |
Topic
| TR32 Topic: | Soil |
| Related Subproject: | B4 |
| Subjects: | Keywords: Eddy Covariance, Soil Moisture, Exchange, Water |
File Details
| Filename: | 2010_Vanderborght_VZJ.pdf |
| Data Type: | Text - Article |
| Size: | 12 Pages |
| File Size: | 2 MB |
| Date: | Issued: 07.09.2010 |
| Mime Type: | application/pdf |
| Data Format: | |
| Language: | English |
| Status: | Completed |
Constraints
| Download Permission: | Only Project Members |
| General Access and Use Conditions: | For internal use only |
| Access Limitations: | For internal use only |
| Licence: | [TR32DB] Data policy agreement |
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Specific Information - Publication
| Publication Status: | Published |
| Review Status: | Peer reviewed |
| Publication Type: | Article |
| Article Type: | Journal |
| Source: | Vadose Zone Journal |
| Source Website: | www.soils.org |
| Issue: | 4 |
| Volume: | 9 |
| Number of Pages: | 12 (943 - 954) |
Metadata Details
| Metadata Creator: | Jan Vanderborght |
| Metadata Created: | 02.12.2013 |
| Metadata Last Updated: | 02.12.2013 |
| Subproject: | B4 |
| Funding Phase: | 1 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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| Page Visits: | 900 |
| Metadata Downloads: | 0 |
| Dataset Downloads: | 0 |
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