LI840A infrared gas analyzer (LI-COR Inc, Lincon, USA)
Infrared temperature
22 m
Infrared temperature sensor (IR100, Campbell Scientific, Logan, USA)
Fluxes of non-CO2 gases
Gas
N2O/CO (only August 2017 to April 2019)
Method
Laser spectrometer model 913-0014 (Los Gatos Research, San Jose, USA)
Measurement height
22 m
Data logger
CR3000
Data storage
GWDG (Göttingen University Computing Centre)
Other
Photosynthesis
Leaf gas exchange measurements
Ecological Investigation
Sap flux in 2014
Observation Period and Data Availability
Measurement Period
Ongoing since March 2014
Measurement Frequency
Continuous
Data Availability
2014-2020 in AsiaFlux Database (under construction)
Contact
Alexander Knohl (aknohl [at] uni-goettingen.de) University of Goettingen, Bioclimatology, Faculty of Forest Sciences and Forest Ecology Büsgenweg 2, 37077 Göttingen, Germany Tel: +49-551-39-23682 Fax: +49-551-39-9619
Christian Stiegler (christian.stiegler [at] biologie.uni-goettingen.de) University of Goettingen, Bioclimatology, Faculty of Forest Sciences and Forest Ecology Büsgenweg 2, 37077 Göttingen, Germany Tel: +49-551-39-12115 Fax: +49-551-39-9619
Tania June (tania.june [at] yahoo.com) Department of Geophysics and Meteorology, Bogor Agricultural University Bogor, Indonesia
Calibration Information
The open-path analyzer was calibrated approx. every two months with reference CO2 gas and H2O measurements were calibrated using a dew point generator.
The N2O/CO sensor was calibrated every 6 months with N2O reference gas and H2O measurements were calibrated using a dew point generator.
Infrastructure
Tower, Electrical power
Research Fund
Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - project number 192626868 - SFB 990 and the Ministry of Research, Technology and Higher Education (Ristekdikti) in the framework of the collaborative German - Indonesian research project CRC990, sub-project A03. https://uni-goettingen.de/en/310995.html
Publication
Meijide, A., Röll, A., Fan, Y., Herbst, M., Niu, F., Tiedemann, F., Knohl, A. (2017). Controls of water and energy fluxes in oil palm plantations: Environmental variables and oil palm age. Agricultural and Forest Meteorology, 239, 71-85. doi:10.1016/j.agrformet.2017. 02.034
Stiegler, C., Meijide, A., Fan, Y., Ali, A. A., June, T., & Knohl, A. (2019). El Niño-Southern Oscillation (ENSO) event reduces CO2 uptake of an Indonesian oil palm plantation. Biogeosciences, 16, 2873-2890. doi:10.5194/bg-16-2873-2019
Meijide A, de la Rua C, Guillaume T, Röll A, Hassler E, Stiegler C, Tjoa A, June T, Corre MD, Veldkamp E, Knohl A (2020). Measured greenhouse gas budgets challenge emission savings from palm oil biodiesel. Nature Communications 11(1), 1089. doi: 10.1038/ s41467-020-14852-6.