1. Soil moisture network in COPS C. Hauck, N. Kalthoff, L. Krauß Institute for Meteorology and Climate Research, University of Karlsruhe 5th COPS workshop, 26 – 28 march 2007 26 march 2007L. Krauß

2. COPS locations Supersites Sites of energy balance/ turbulence/ sodar measurement Karlsruhe Locations of Soil Moisture Measurements FZ Karlsruhe (status: installed) FZ Karlsruhe (status: not installed yet) Univ. Bayreuth Univ. Freiburg Soil Moisture Network 26 march 2007L. Krauß

3. Soil Moisture Stations 26 march 2007L. Krauß ►additional stations (for COPS):  at supersite R, H, M(FZ Karlsruhe)  at supersite S(Univ. Bonn)  at supersite V(French station)  in the Rhinevalley at Linkenheim(FZ Karlsruhe) Soil Moisture Network FZ Karlsruhe University of BayreuthUniversity of Freiburg 40 stations each with 3 sensors 4 stations2 stations the sensors probably will work from the first of may and will run at least for 1 year

4. Installation Details Soil moisture sensors: SISOMOP (Simplified Soil Moisture Probe) 5 cm 20 cm 50 cm Installation depths 26 march 2007L. Krauß  3 sensors at each station

5. Special Observation Sites/ Measurements Optional:detailed 2D-variability of soil moisture with geophysical instruments (Geoelectrics/ Ground penetrating radar) 3 planned Special Observation Sites (spatial soil moisture variability) –Linkenheim (Rhine valley, close to IMK-FZK) –Hornisgrinde (supersite H) –AMF site (supersite M) Rings et al. submitted Electrical Resistivity Tomography 26 march 2007L. Krauß

6. ►location of all soil moisture stations (run by FZ Karlsruhe) are near existing precipitation stations (DWD, LUBW) ►integration of all soil moisture measurements during COPS into one network coordinated by Karlsruhe with French contributions ►there is at least 1 soil moisture measurement on each supersite ►Data will be send to the Archive in Hamburg every 4 weeks Open Questions: - temporal resolution  depends on the storage capability of the data loggers  will be less than 1 hour (presumably 30 minutes) - temporal resolution of detailed 2D-sections is not clear yet 26 march 2007L. Krauß Logistic/ Questions