Permanent forest meteorological experimental site Hartheim
Coordinates
7.6° E, 47.93° N, altitude: 201 m a.s.l.
Operator
Meteorological Institute, University of Freiburg
Prof. Dr. H. Mayer
Werderring 10, D-79085 Freiburg
Vegetation:
adult trees: mainly Pinus sylvestris L., some patches Pinus nigra L.
Lower vegetation: Hardwood
mean canopy height: 15.0 m
stand age: 43 y
stand density: 800 trees/ha
plant area index: 1.9 m2/m2
mean breast height diameter: 15.6 cm
Soil:
soil type: sandy-silty Loam on gravel/sand
mean thickness of the surface layer: 40 cm (14-88 cm)
Density: 1.0-1.4 g cm3
Field capacity: 31.4 vol.%
Wilting point: 11.7 vol.%
Instrumentation:
| component | type of instrument |
|---|---|
| photosynthetically active radiation above the canopy | Li-190SZ (quantum sensor)/ Li-COR Biosciences GmbH, Lincoln, NE, USA |
| photosynthetically active radiation below the canopy | Li-190SZ (quantum sensor, 2 levels) / Li-COR Biosciences GmbH, Lincoln, NE, USA |
| short-wave radiative fluxes | CM21 (ventilated pyranometer) / Kipp&Zonen Inc., Delft, Netherlands |
| long-wave radiative fluxes | CG4 (ventilated pyrgeometer) / Kipp&Zonen Inc. , Delft, Netherlands |
| soil heat flux | HFP01SC, HFP01 (heat flux plate) / Hukseflux, Delft, Netherlands |
| soil temperature | PT100 (6 levels) / Heraeus Sensor Technology, Kleinostheim, Germany |
| soil moisture | CS615 (TDR) / Campbell Scientific Inc., Logan, Utah, USA |
| air temperature, wet bulb temperature aspirated psychrometers | PT100 (8 levels) / Heraeus Sensor Technology, Kleinostheim, Germany |
| horizontal wind velocity | WAA151 (cup anemometer, 8 levels) / Vaisala GmbH, Helsinki, Finland |
| wind direction | W200P (wind vane) / Vector Instruments |
| wind components | CSAT3 (sonic anemometer) / Campbell Scientific Inc., Logan, Utah, USA |
| concentrations of H2O and CO2 | Li7500 (open path IRGA) / Li-COR Biosciences, Lincoln, NE, USA GmbH |
| precipitation | ombrometer, pluviometer / Ott Hydrometrie, Kempten, Germany |
| precipitation (throughfall) | rain gutter with tipping bucket gauge ARG100 / Campbell Scientific Inc., Logan, Utah, USA |
| data acquisition | CR5000, CR23x, CR21x (datalogger) / Campbell Scientific Inc., Logan, Utah, USA |
GOP-data
| variable | measurement height |
|---|---|
| above canopy air temperature | 1.5 hc=23 m |
| below canopy air temperature | 0.4 hc=6 m |
| above canopy water pressure | 1.5 hc=23 m |
| below canopy water pressure | 0.4 hc=6 m |
| wind direction | 2.0 hc=30 m |
| precipitation | 2.0 hc=30 m |
| above canopy net radiation | 1.2 hc=18 m |
| above canopy incoming shortwave radiation | 1.2 hc=18 m |
| above canopy reflected shortwave radiation | 1.2 hc=18 m |
| above canopy incoming longwave radiation | 1.2 hc=18 m |
| above canopy emitted longwave radiation | 1.2 hc=18 m |
| soil temperature | -0.01 m; -0.03 m; -0.05 m; -0.10 m; -0.20 m; -0.40 m |
| volumetric soil moisture content | average from 0.0 to -0.3 m |