Soil Moisture Patterns and the Lower Atmosphere During the LUCE Measurement Campaign, Switzerland
Abstract
The LUCE (Lausanne Urban Canopy Experiment) is a measurement campaign which took place on the EPFL campus. This experiment aimed at better understanding micrometeorology in an urban environment. It requires high temporal and spatial density measures in order to cover the heterogeneous areas. The measurement system was based on a wireless sensor network of 90 sensorscope sensing stations which were deployed on the EPFL campus and measured key environmental quantities at high spatial and temporal resolution. This innovative system was deployed starting from November 2006 until June 2007. In addition a SODAR/RASS, a scintillometer and two sonic anemometers coupled with a hygrometer were installed over the campus. Each sensorscope sensing station use the Echo Probe EC-5 sensor to measure soil moisture and the Watermark 200SS Soil Water potential sensor to measure soil water pressure. At first, the methodology employed to treat the soil measurements consists on a spatial interpolation with ArcGis to see the distribution of soil moisture and soil water pressure over the EPFL campus. Then, soil water characteristic curves for each station have been drawn and temporal stability theory has been adapted to our data set. As result, it was possible to connect the spatial location and the soil moisture content with the soil characteristics. Moreover, we have been able to catch the representative points of the mean soil moisture values and to show the temporarily time-stable sites. Finally, the results were compared with laboratory soil analysis and validated.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2007
- Bibcode:
- 2007AGUFM.H31E0697O
- Keywords:
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- 1818 Evapotranspiration;
- 1840 Hydrometeorology;
- 1866 Soil moisture