GOP - General Observation Period

Permanent forest meteorological experimental site Tuttlingen

further information (in German only)

Coordinates

47° 59’ N, 8° 45’ E, altitude: 740-780 m a.s.l.

Operator

Meteorological Institute, University of Freiburg
Prof. Dr. H. Mayer
Werderring 10, D-79085 Freiburg

Concept:

coming soon

Vegetation:

adult trees: Fagus sylvatica L. (90-95%)

mean canopy height: 27.7 m
stand age: 70 y
stand density: 526 trees/ha
plant area index: 5.3 m²/m²
mean breast height diameter: 27.6 cm

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 (heated pyranometer) / Kipp&Zonen Inc., Delft, Netherlands
long-wave radiative fluxes	CG1 (heated pyrgeometer) / Kipp&Zonen Inc. , Delft, Netherlands
soil heat flux	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, relative humidity	HMP45D (humicap) / Vaisala GmbH, Helsinki, Finland
horizontal wind velocity	WAA151 (cup anemometer, 8 levels) / Vaisala GmbH, Helsinki, Finland
wind direction	W200P (wind vane) / Vector Instruments
precipitation	tipping bucket gauge ARG100 / Campbell Scientific Inc., Logan, Utah, USA
precipitation (throughfall)	rain gutter with tipping bucket gauge ARG100 / Campbell Scientific Inc., Logan, Utah, USA
data acquisition	CR23x (datalogger) / Campbell Scientific Inc., Logan, Utah, USA

GOP-data

Data provided for GOP are measured at the NE oriented slope at the untreated site.

variable	measurement height
above canopy air temperature	1.3 h_c=36 m
below canopy air temperature	0.05 h_c=1.5 m
above canopy water pressure	1.3 h_c=23 m
below canopy water pressure	0.05 h_c=1.5 m
wind direction	1.5 h_c=42 m
precipitation	1.5 h_c=42 m
above canopy net radiation (horizontally)	1.3 h_c=36 m
above canopy incoming shortwave radiation (sensor plane horizontally)	1.3 h_c=36 m
above canopy reflected shortwave radiation (sensor plane horizontally)	1.3 h_c=36 m
above canopy incoming longwave radiation (sensor plane horizontally)	1.3 h_c=36 m
above canopy emitted longwave radiation (sensor plane horizontally)	1.3 h_c=36 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