Field Experiments & Instrumentation / Workshops                    --- Making Things Happen ---     



Farmland with changing arable crops
Vegetation height variable

Latitude 51.10
Longitude 10.91
Elevation 162 m a.s.l.


  • Since 2000 until today
  • Eddy covariance
  • Meteorology
  • Vegetation and soil
  • Since 2013 ICOS site - Christian Brümmer
  • 2015: extendet to ICOS standarts



Thünen-Institut für Agrarklimaschutz, Braunschweig

Description & History

The site is located near Gebesee, which is about 20 km NW of Erfurt in Thuringia, Germany. The site has a crop rotation history since 1970 and it consists of two separate constructions Tower 1 and Tower 2.

It is the eldest cropland Eddy covariance site in Europe. The site has been part of CarboEurope, NitroEurope and IMECC and has been selected to be one of the German Level 1 sites within the European research infrastructure ICOS (Kutsch, et. al. 2013).

Tower 1 is a double lattice tower of triangular sections. Both masts are 6 m high and connected to each other. It was built in the year 2000.

Tower 2 is located outside the fence some 30 m apart right in the field. It was built in 2003. This telescopic tower can be adjusted to a growing vegetation. From there all data are sent to the main cabinet inside the fenced area.

End of 2015: extendet to ICOS standarts (LICOR 7200/ GILL HS-100/ CNR 4)

The Thünen Institute from Braunschweig, is now the operator of the ICOS Class-1 Label station and after successful years of parallel measurement our group is goingt to dismantle the rest of the old facility in 2021.

Variables & Instruments

Tower 1 (Inside fence)


  • Profile at 7 heights - CO2 (LI6251)


  • Wind velocity and wind direction - 2D-ultrasonic-anemometer, Thies
  • Air pressure - pressure transmitter PTB101B, Vaisala
  • Air temperature and humidity - temperature-humidity-sensor HMP45D, Vaisala
  • Precipitation - heated tipping bucket rain gauge, Thies
  • Photosynthetically active radiation - PAR sensor PQS1, Kipp & Zonen
  • Diffuse solar radiation - shadow ringed pyranometer CM11, Kipp & Zonen
  • Surface temperature - infrared thermometer KT15, Heitronics

Soil conditions

  • Soil temperature in 2 profiles having 7 depths - soil temperature sensors PT100, home-made
  • Soil moisture in 4 depths - soil moisture probes ML-2x, Delta-T
  • Soil heat flux in 5 locations - soil heat flux plates HP3/CN3, Rimco

Data acquisition

  • Meteorological data - datalogger CR23X, Campbell Scientific
  • CO2 profile data - datalogger CR10X, Campbell Scientific
  • Flux data - notebook
  • Vegetation - digital camera

Tower 2 (Open field)


  • Eddy covariance - CO2, water vapor, momentum, heat (Gill R3, LI7000); (GILL HS/ LICOR 7200)


  • Air pressure - pressure transmitter PTB101B, Vaisala
  • Solar radiation - net radiometer CNR1 and CNR 4, Kipp & Zonen
  • Terrestrial radiation - net radiometer CNR1 and CNR 4, Kipp & Zonen

Data acquisition

  • See Tower 1


Anthoni, P. M., Freibauer, A., Kolle, O., Schulze, E.-D. (2004). Winter wheat carbon exchange in Thuringia, Germany. Agricultural and Forest Meteorology, 121(1-2), 55-67.

Anthoni, P. M., Knohl, A., Rebmann, C., Freibauer, A., Mund, M., Ziegler, W., Kolle, O., Schulze, E.-D. (2004). Forest and agricultural land-use-dependent CO2 exchange in Thuringia, Germany. Global Change Biology, 10(12), 2005-2019.

Kutsch, W. L., Aubinet, M., Buchmann, N., Smith, P., Osborne, B., Eugster, W., Wattenbach, M., Schrumpf, M., Schulze, E. D., Tomelleri, E., Ceschia, E., Bernhofer, C., Béziat, P., Carrara, A., Di Tommasi, P., Grünwald, T., Jones, M., Magliulo, V., Marloie, O., Moureaux, C., Olioso, A., Sanz, M. J., Saunders, M., Søgaard, H., Ziegler, W. (2010). The net biome production of full crop rotations in Europe. Agriculture, Ecosystems & Environment, 139(3), 336-345. doi:10.1016/j.agee.2010.07.016.

Kutsch, W. L., Brümmer C., Don C., Dechow R.,Fuß R., Freibauer A., Schulze E.-D., Kolle O., Ziegler W.(2013)The full GHG balance over two crop rotations at an agricultural site near Gebesee, Thuringia, Germany EGU2013-12481